/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/loop-industry-pattern/ofuf_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:36:52,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:36:52,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:36:53,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:36:53,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:36:53,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:36:53,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:36:53,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:36:53,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:36:53,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:36:53,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:36:53,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:36:53,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:36:53,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:36:53,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:36:53,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:36:53,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:36:53,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:36:53,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:36:53,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:36:53,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:36:53,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:36:53,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:36:53,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:36:53,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:36:53,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:36:53,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:36:53,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:36:53,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:36:53,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:36:53,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:36:53,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:36:53,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:36:53,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:36:53,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:36:53,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:36:53,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:36:53,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:36:53,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:36:53,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:36:53,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:36:53,157 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:36:53,207 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:36:53,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:36:53,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:36:53,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:36:53,212 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:36:53,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:36:53,213 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:36:53,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:36:53,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:36:53,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:36:53,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:36:53,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:36:53,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:36:53,215 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:36:53,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:36:53,215 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:36:53,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:36:53,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:36:53,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:36:53,216 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:36:53,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:36:53,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:36:53,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:36:53,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:36:53,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:36:53,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:36:53,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:36:53,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:36:53,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:36:53,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:36:53,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:36:53,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:36:53,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:36:53,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:36:53,687 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:36:53,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_1.c [2020-10-27 01:36:53,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44b4b3401/5c673980da9f4b98a06f609b4f45144a/FLAGb924ac973 [2020-10-27 01:36:54,464 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:36:54,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/ofuf_1.c [2020-10-27 01:36:54,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44b4b3401/5c673980da9f4b98a06f609b4f45144a/FLAGb924ac973 [2020-10-27 01:36:54,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44b4b3401/5c673980da9f4b98a06f609b4f45144a [2020-10-27 01:36:54,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:36:54,757 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:36:54,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:36:54,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:36:54,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:36:54,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:36:54" (1/1) ... [2020-10-27 01:36:54,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4621f16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:54, skipping insertion in model container [2020-10-27 01:36:54,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:36:54" (1/1) ... [2020-10-27 01:36:54,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:36:54,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:36:55,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:36:55,218 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:36:55,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:36:55,404 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:36:55,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:55 WrapperNode [2020-10-27 01:36:55,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:36:55,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:36:55,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:36:55,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:36:55,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:55" (1/1) ... [2020-10-27 01:36:55,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:55" (1/1) ... [2020-10-27 01:36:55,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:55" (1/1) ... [2020-10-27 01:36:55,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:55" (1/1) ... [2020-10-27 01:36:55,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:55" (1/1) ... [2020-10-27 01:36:55,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:55" (1/1) ... [2020-10-27 01:36:55,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:55" (1/1) ... [2020-10-27 01:36:55,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:36:55,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:36:55,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:36:55,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:36:55,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:36:55,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:36:55,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:36:55,598 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:36:55,599 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 01:36:55,599 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2020-10-27 01:36:55,599 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_107 [2020-10-27 01:36:55,599 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_110 [2020-10-27 01:36:55,599 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_113 [2020-10-27 01:36:55,599 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_114 [2020-10-27 01:36:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_115 [2020-10-27 01:36:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_117 [2020-10-27 01:36:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_118 [2020-10-27 01:36:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:36:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 01:36:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:36:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:36:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:36:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:36:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 01:36:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2020-10-27 01:36:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-10-27 01:36:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_107 [2020-10-27 01:36:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_110 [2020-10-27 01:36:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_113 [2020-10-27 01:36:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_114 [2020-10-27 01:36:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_115 [2020-10-27 01:36:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 01:36:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_117 [2020-10-27 01:36:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_118 [2020-10-27 01:36:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-10-27 01:36:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:36:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 01:36:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 01:36:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:36:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:36:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:36:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:36:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 01:36:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 01:36:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:36:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 01:36:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:36:56,736 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:36:56,736 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-27 01:36:56,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:36:56 BoogieIcfgContainer [2020-10-27 01:36:56,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:36:56,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:36:56,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:36:56,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:36:56,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:36:54" (1/3) ... [2020-10-27 01:36:56,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3bd9a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:36:56, skipping insertion in model container [2020-10-27 01:36:56,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:36:55" (2/3) ... [2020-10-27 01:36:56,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3bd9a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:36:56, skipping insertion in model container [2020-10-27 01:36:56,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:36:56" (3/3) ... [2020-10-27 01:36:56,749 INFO L111 eAbstractionObserver]: Analyzing ICFG ofuf_1.c [2020-10-27 01:36:56,762 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:36:56,768 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:36:56,783 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:36:56,813 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:36:56,813 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:36:56,813 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:36:56,814 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:36:56,814 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:36:56,814 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:36:56,814 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:36:56,814 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:36:56,835 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2020-10-27 01:36:56,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 01:36:56,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:36:56,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:36:56,848 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:36:56,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:36:56,855 INFO L82 PathProgramCache]: Analyzing trace with hash 636648653, now seen corresponding path program 1 times [2020-10-27 01:36:56,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:36:56,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169334615] [2020-10-27 01:36:56,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:36:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:36:57,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:36:57,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:36:57,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:36:57,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:36:57,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:36:58,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:02,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:02,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 01:37:02,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:37:02,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 01:37:02,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:02,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:37:02,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:37:02,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 01:37:02,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:37:02,632 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 01:37:02,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:02,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:02,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:02,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:02,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:02,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 01:37:02,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:02,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:37:02,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:37:02,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:37:02,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:37:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:02,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:02,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:02,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:02,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:02,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:37:02,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:37:02,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 01:37:02,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:02,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:37:02,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:37:02,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:37:02,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:37:02,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 01:37:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:02,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:02,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:02,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:02,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:37:02,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:37:02,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:37:02,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:02,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:37:02,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:37:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:37:02,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:37:02,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:02,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169334615] [2020-10-27 01:37:02,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:37:02,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 01:37:02,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182357160] [2020-10-27 01:37:02,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 01:37:02,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:02,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 01:37:02,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:37:02,980 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 12 states. [2020-10-27 01:37:03,247 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 01:37:03,553 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 01:37:04,037 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 01:37:04,446 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 01:37:04,952 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-27 01:37:05,229 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 01:37:05,528 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 01:37:06,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:06,897 INFO L93 Difference]: Finished difference Result 284 states and 436 transitions. [2020-10-27 01:37:06,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 01:37:06,900 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-27 01:37:06,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:06,923 INFO L225 Difference]: With dead ends: 284 [2020-10-27 01:37:06,923 INFO L226 Difference]: Without dead ends: 148 [2020-10-27 01:37:06,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-10-27 01:37:06,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-27 01:37:07,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2020-10-27 01:37:07,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-27 01:37:07,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 204 transitions. [2020-10-27 01:37:07,060 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 204 transitions. Word has length 39 [2020-10-27 01:37:07,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:07,060 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 204 transitions. [2020-10-27 01:37:07,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 01:37:07,061 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 204 transitions. [2020-10-27 01:37:07,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 01:37:07,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:07,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:37:07,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:37:07,067 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:07,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:07,067 INFO L82 PathProgramCache]: Analyzing trace with hash 868739572, now seen corresponding path program 1 times [2020-10-27 01:37:07,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:07,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587541780] [2020-10-27 01:37:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:07,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:07,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:07,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:07,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:07,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:08,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:12,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:12,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 01:37:12,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:37:12,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 01:37:12,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:37:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:37:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 01:37:12,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:12,410 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 01:37:12,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:12,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:12,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:12,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:12,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:12,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 01:37:12,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:12,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:37:12,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:12,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:37:12,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:12,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:37:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:12,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:12,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:12,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:12,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:12,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:37:12,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:37:12,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 01:37:12,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:12,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:37:12,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:37:12,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:37:12,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:12,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 01:37:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:12,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:12,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:12,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:37:12,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:12,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:37:12,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:37:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:37:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:37:12,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:12,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587541780] [2020-10-27 01:37:12,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:37:12,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 01:37:12,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491617370] [2020-10-27 01:37:12,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 01:37:12,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:12,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 01:37:12,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-27 01:37:12,706 INFO L87 Difference]: Start difference. First operand 146 states and 204 transitions. Second operand 15 states. [2020-10-27 01:37:12,897 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 01:37:13,278 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 01:37:13,851 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 01:37:14,146 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 01:37:14,565 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-27 01:37:14,842 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 01:37:15,164 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 01:37:15,523 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 01:37:15,928 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 01:37:16,225 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 01:37:17,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:17,013 INFO L93 Difference]: Finished difference Result 163 states and 222 transitions. [2020-10-27 01:37:17,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 01:37:17,014 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-10-27 01:37:17,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:17,018 INFO L225 Difference]: With dead ends: 163 [2020-10-27 01:37:17,018 INFO L226 Difference]: Without dead ends: 140 [2020-10-27 01:37:17,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2020-10-27 01:37:17,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-27 01:37:17,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2020-10-27 01:37:17,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-27 01:37:17,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 190 transitions. [2020-10-27 01:37:17,048 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 190 transitions. Word has length 40 [2020-10-27 01:37:17,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:17,048 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 190 transitions. [2020-10-27 01:37:17,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 01:37:17,049 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 190 transitions. [2020-10-27 01:37:17,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 01:37:17,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:17,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:37:17,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:37:17,052 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:17,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:17,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1144158803, now seen corresponding path program 1 times [2020-10-27 01:37:17,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:17,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548891412] [2020-10-27 01:37:17,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:17,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:17,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:17,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:17,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:17,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:17,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:19,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:22,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:22,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 01:37:22,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 01:37:22,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 01:37:22,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:22,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 01:37:22,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:37:22,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 01:37:22,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:22,385 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 01:37:22,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:22,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:22,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:22,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:22,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:22,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 01:37:22,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:37:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:37:22,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:22,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:37:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:22,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:22,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:22,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:22,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:22,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:37:22,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:37:22,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 01:37:22,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:22,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:37:22,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:37:22,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:37:22,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:22,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 01:37:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:22,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:22,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:22,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:37:22,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:22,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:37:22,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:22,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:37:22,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 01:37:22,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:37:22,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:22,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548891412] [2020-10-27 01:37:22,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:37:22,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 01:37:22,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359882560] [2020-10-27 01:37:22,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 01:37:22,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:22,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 01:37:22,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:37:22,718 INFO L87 Difference]: Start difference. First operand 136 states and 190 transitions. Second operand 14 states. [2020-10-27 01:37:22,905 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 01:37:23,257 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 01:37:23,808 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 01:37:24,093 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 01:37:24,579 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 01:37:24,871 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 01:37:25,141 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 01:37:26,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:26,279 INFO L93 Difference]: Finished difference Result 194 states and 265 transitions. [2020-10-27 01:37:26,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 01:37:26,280 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 41 [2020-10-27 01:37:26,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:26,287 INFO L225 Difference]: With dead ends: 194 [2020-10-27 01:37:26,287 INFO L226 Difference]: Without dead ends: 163 [2020-10-27 01:37:26,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2020-10-27 01:37:26,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-27 01:37:26,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 161. [2020-10-27 01:37:26,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-27 01:37:26,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 225 transitions. [2020-10-27 01:37:26,354 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 225 transitions. Word has length 41 [2020-10-27 01:37:26,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:26,354 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 225 transitions. [2020-10-27 01:37:26,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 01:37:26,354 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 225 transitions. [2020-10-27 01:37:26,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 01:37:26,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:26,359 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:37:26,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:37:26,359 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:26,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:26,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1346930223, now seen corresponding path program 1 times [2020-10-27 01:37:26,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:26,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664686321] [2020-10-27 01:37:26,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:26,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:26,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:26,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:26,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:26,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:26,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:31,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:31,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 01:37:31,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:37:31,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 01:37:31,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:31,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:37:31,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:37:31,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 01:37:31,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:31,866 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 01:37:31,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:31,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:31,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:31,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:31,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:31,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 01:37:31,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:31,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:37:31,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:31,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:37:31,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:31,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:37:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:32,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:32,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:32,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:32,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:32,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:37:32,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:37:32,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 01:37:32,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:32,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:37:32,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:37:32,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:37:32,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:32,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 01:37:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:32,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:32,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:32,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:37:32,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:32,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:37:32,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:32,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:37:32,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 01:37:32,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:37:32,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:37:32,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:32,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664686321] [2020-10-27 01:37:32,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:37:32,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 01:37:32,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079832031] [2020-10-27 01:37:32,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 01:37:32,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:32,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 01:37:32,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:37:32,115 INFO L87 Difference]: Start difference. First operand 161 states and 225 transitions. Second operand 14 states. [2020-10-27 01:37:32,303 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 01:37:32,646 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 01:37:33,221 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 01:37:33,532 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 01:37:33,887 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 01:37:34,176 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-27 01:37:34,645 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 01:37:34,908 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 01:37:35,210 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 01:37:36,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:36,346 INFO L93 Difference]: Finished difference Result 208 states and 283 transitions. [2020-10-27 01:37:36,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 01:37:36,347 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-10-27 01:37:36,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:36,350 INFO L225 Difference]: With dead ends: 208 [2020-10-27 01:37:36,350 INFO L226 Difference]: Without dead ends: 177 [2020-10-27 01:37:36,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2020-10-27 01:37:36,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-27 01:37:36,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 161. [2020-10-27 01:37:36,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-27 01:37:36,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 225 transitions. [2020-10-27 01:37:36,380 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 225 transitions. Word has length 43 [2020-10-27 01:37:36,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:36,380 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 225 transitions. [2020-10-27 01:37:36,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 01:37:36,380 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 225 transitions. [2020-10-27 01:37:36,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 01:37:36,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:36,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:37:36,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:37:36,383 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:36,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:36,385 INFO L82 PathProgramCache]: Analyzing trace with hash 216343474, now seen corresponding path program 1 times [2020-10-27 01:37:36,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:36,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824289521] [2020-10-27 01:37:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:36,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:36,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:36,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:36,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:36,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:38,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:40,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:41,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:41,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 01:37:41,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 01:37:41,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 01:37:41,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 01:37:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:37:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 01:37:41,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:41,819 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 01:37:41,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:41,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:41,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:41,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:41,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:41,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 01:37:41,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:41,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:37:41,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:41,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:37:41,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:42,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:37:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:42,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:42,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:42,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:42,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:42,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:37:42,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:37:42,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 01:37:42,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:42,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:37:42,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:37:42,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:37:42,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:42,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 01:37:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:42,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:42,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:42,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:37:42,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:42,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:37:42,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:42,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:37:42,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:37:42,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:37:42,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:42,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:42,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824289521] [2020-10-27 01:37:42,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:37:42,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 01:37:42,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858966729] [2020-10-27 01:37:42,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 01:37:42,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:42,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 01:37:42,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-27 01:37:42,429 INFO L87 Difference]: Start difference. First operand 161 states and 225 transitions. Second operand 19 states. [2020-10-27 01:37:42,630 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 01:37:43,049 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 01:37:44,092 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 01:37:44,415 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 01:37:44,908 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-27 01:37:45,187 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 01:37:45,554 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-27 01:37:45,997 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 01:37:46,425 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 01:37:46,770 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 01:37:47,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:47,835 INFO L93 Difference]: Finished difference Result 308 states and 433 transitions. [2020-10-27 01:37:47,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 01:37:47,836 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 42 [2020-10-27 01:37:47,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:47,839 INFO L225 Difference]: With dead ends: 308 [2020-10-27 01:37:47,839 INFO L226 Difference]: Without dead ends: 167 [2020-10-27 01:37:47,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=225, Invalid=965, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 01:37:47,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-27 01:37:47,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2020-10-27 01:37:47,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-27 01:37:47,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 227 transitions. [2020-10-27 01:37:47,868 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 227 transitions. Word has length 42 [2020-10-27 01:37:47,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:47,869 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 227 transitions. [2020-10-27 01:37:47,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 01:37:47,869 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 227 transitions. [2020-10-27 01:37:47,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 01:37:47,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:47,871 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:37:47,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:37:47,871 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:47,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:47,872 INFO L82 PathProgramCache]: Analyzing trace with hash 2142895955, now seen corresponding path program 1 times [2020-10-27 01:37:47,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:47,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217436915] [2020-10-27 01:37:47,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:47,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:47,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:48,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:48,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:48,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:49,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:52,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:52,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 01:37:52,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:37:52,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 01:37:52,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:52,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 01:37:52,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:37:52,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 01:37:52,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:53,405 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 01:37:53,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:53,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:53,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:53,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:53,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:53,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 01:37:53,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:53,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:37:53,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:53,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:37:53,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:53,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:37:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:53,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:53,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:53,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:53,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:53,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:37:53,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:37:53,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 01:37:53,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:37:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:37:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:37:53,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:53,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 01:37:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:53,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:53,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:53,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:37:53,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:53,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:37:53,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:37:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 01:37:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:37:53,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:53,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:53,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217436915] [2020-10-27 01:37:53,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:37:53,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 01:37:53,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693807583] [2020-10-27 01:37:53,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 01:37:53,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:53,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 01:37:53,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-27 01:37:53,814 INFO L87 Difference]: Start difference. First operand 163 states and 227 transitions. Second operand 16 states. [2020-10-27 01:37:54,023 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 01:37:54,407 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 01:37:55,152 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 01:37:55,484 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 01:37:55,872 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 01:37:56,145 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 01:37:56,614 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 01:37:56,894 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 01:37:57,183 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 01:37:58,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:58,606 INFO L93 Difference]: Finished difference Result 210 states and 285 transitions. [2020-10-27 01:37:58,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 01:37:58,607 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-27 01:37:58,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:58,609 INFO L225 Difference]: With dead ends: 210 [2020-10-27 01:37:58,609 INFO L226 Difference]: Without dead ends: 179 [2020-10-27 01:37:58,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2020-10-27 01:37:58,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-27 01:37:58,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 163. [2020-10-27 01:37:58,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-27 01:37:58,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 227 transitions. [2020-10-27 01:37:58,635 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 227 transitions. Word has length 45 [2020-10-27 01:37:58,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:58,636 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 227 transitions. [2020-10-27 01:37:58,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 01:37:58,636 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 227 transitions. [2020-10-27 01:37:58,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 01:37:58,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:58,638 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:37:58,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 01:37:58,638 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:58,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:58,639 INFO L82 PathProgramCache]: Analyzing trace with hash 328918512, now seen corresponding path program 2 times [2020-10-27 01:37:58,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:58,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590364395] [2020-10-27 01:37:58,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:58,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:58,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:58,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:58,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:58,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:00,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:01,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:03,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:03,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 01:38:03,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 01:38:03,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 01:38:03,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 01:38:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:38:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 01:38:03,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:04,036 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 01:38:04,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:38:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:04,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:04,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:04,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:38:04,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:38:04,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 01:38:04,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:04,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:38:04,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:38:04,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:38:04,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:04,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:38:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:04,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:04,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:04,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:04,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:04,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:38:04,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:38:04,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 01:38:04,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:38:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:38:04,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:38:04,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:04,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 01:38:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:04,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:04,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:04,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:38:04,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:38:04,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:38:04,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:04,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:38:04,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:38:04,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:38:04,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:04,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:38:04,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590364395] [2020-10-27 01:38:04,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:38:04,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 01:38:04,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613680404] [2020-10-27 01:38:04,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 01:38:04,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:38:04,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 01:38:04,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2020-10-27 01:38:04,930 INFO L87 Difference]: Start difference. First operand 163 states and 227 transitions. Second operand 21 states. [2020-10-27 01:38:05,132 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 01:38:05,545 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 01:38:06,952 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 01:38:07,294 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 01:38:07,890 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-27 01:38:08,220 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 01:38:08,542 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 01:38:08,887 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 01:38:09,368 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 01:38:09,665 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 01:38:13,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:38:13,722 INFO L93 Difference]: Finished difference Result 208 states and 285 transitions. [2020-10-27 01:38:13,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 01:38:13,723 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 44 [2020-10-27 01:38:13,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:38:13,725 INFO L225 Difference]: With dead ends: 208 [2020-10-27 01:38:13,725 INFO L226 Difference]: Without dead ends: 185 [2020-10-27 01:38:13,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=328, Invalid=1154, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 01:38:13,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-27 01:38:13,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 181. [2020-10-27 01:38:13,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-27 01:38:13,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 253 transitions. [2020-10-27 01:38:13,758 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 253 transitions. Word has length 44 [2020-10-27 01:38:13,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:38:13,758 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 253 transitions. [2020-10-27 01:38:13,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 01:38:13,759 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 253 transitions. [2020-10-27 01:38:13,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 01:38:13,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:38:13,761 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:38:13,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 01:38:13,761 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:38:13,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:38:13,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1112424114, now seen corresponding path program 1 times [2020-10-27 01:38:13,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:38:13,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323552672] [2020-10-27 01:38:13,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:38:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:13,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:13,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:13,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:13,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:13,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:15,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:18,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:18,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 01:38:18,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:38:18,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 01:38:18,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:18,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 01:38:18,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:38:18,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 01:38:18,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:19,422 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 01:38:19,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:38:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:19,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:19,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:19,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:38:19,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:38:19,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 01:38:19,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:19,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:38:19,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:38:19,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:38:19,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:19,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:38:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:19,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:19,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:19,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:19,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:19,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:38:19,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:38:19,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 01:38:19,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:38:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:38:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:38:19,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:19,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 01:38:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:19,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:19,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:19,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:38:19,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:38:19,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:38:19,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:38:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:38:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:38:19,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:19,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:38:19,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323552672] [2020-10-27 01:38:19,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:38:19,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 01:38:19,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230557747] [2020-10-27 01:38:19,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 01:38:19,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:38:19,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 01:38:19,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-27 01:38:19,819 INFO L87 Difference]: Start difference. First operand 181 states and 253 transitions. Second operand 19 states. [2020-10-27 01:38:20,039 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 01:38:20,462 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 01:38:21,248 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-27 01:38:21,615 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 01:38:22,093 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-27 01:38:22,446 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-27 01:38:23,054 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-27 01:38:23,370 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 01:38:23,741 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 01:38:24,030 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 01:38:24,574 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 01:38:24,878 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 01:38:25,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:38:25,802 INFO L93 Difference]: Finished difference Result 212 states and 289 transitions. [2020-10-27 01:38:25,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 01:38:25,803 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 46 [2020-10-27 01:38:25,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:38:25,806 INFO L225 Difference]: With dead ends: 212 [2020-10-27 01:38:25,806 INFO L226 Difference]: Without dead ends: 189 [2020-10-27 01:38:25,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=204, Invalid=918, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 01:38:25,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-27 01:38:25,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 181. [2020-10-27 01:38:25,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-27 01:38:25,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 253 transitions. [2020-10-27 01:38:25,835 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 253 transitions. Word has length 46 [2020-10-27 01:38:25,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:38:25,836 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 253 transitions. [2020-10-27 01:38:25,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 01:38:25,836 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 253 transitions. [2020-10-27 01:38:25,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 01:38:25,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:38:25,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:38:25,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 01:38:25,838 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:38:25,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:38:25,839 INFO L82 PathProgramCache]: Analyzing trace with hash -433329926, now seen corresponding path program 1 times [2020-10-27 01:38:25,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:38:25,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562505742] [2020-10-27 01:38:25,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:38:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:25,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:25,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:25,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:25,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:26,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:26,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:27,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:30,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:30,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 01:38:30,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 01:38:30,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 01:38:30,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:30,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 01:38:30,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:38:30,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 01:38:30,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:31,378 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 01:38:31,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:38:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:31,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:31,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:31,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:38:31,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:38:31,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 01:38:31,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:31,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:38:31,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:38:31,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:38:31,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:31,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:38:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:31,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:31,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:31,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:31,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:31,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:38:31,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:38:31,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 01:38:31,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:38:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:38:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:38:31,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:31,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 01:38:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:31,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:31,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:31,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:38:31,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:38:31,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:38:31,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:31,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:38:31,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 01:38:31,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:38:31,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:31,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:38:31,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562505742] [2020-10-27 01:38:31,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:38:31,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 01:38:31,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595996670] [2020-10-27 01:38:31,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 01:38:31,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:38:31,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 01:38:31,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-10-27 01:38:31,629 INFO L87 Difference]: Start difference. First operand 181 states and 253 transitions. Second operand 16 states. [2020-10-27 01:38:31,828 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 01:38:32,204 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 01:38:32,864 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 01:38:33,150 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 01:38:33,806 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 01:38:34,081 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 01:38:34,365 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 01:38:35,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:38:35,712 INFO L93 Difference]: Finished difference Result 241 states and 330 transitions. [2020-10-27 01:38:35,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 01:38:35,713 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-27 01:38:35,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:38:35,716 INFO L225 Difference]: With dead ends: 241 [2020-10-27 01:38:35,716 INFO L226 Difference]: Without dead ends: 210 [2020-10-27 01:38:35,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2020-10-27 01:38:35,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-27 01:38:35,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 176. [2020-10-27 01:38:35,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-27 01:38:35,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 246 transitions. [2020-10-27 01:38:35,747 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 246 transitions. Word has length 45 [2020-10-27 01:38:35,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:38:35,747 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 246 transitions. [2020-10-27 01:38:35,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 01:38:35,748 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 246 transitions. [2020-10-27 01:38:35,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 01:38:35,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:38:35,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:38:35,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 01:38:35,750 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:38:35,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:38:35,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1441166869, now seen corresponding path program 1 times [2020-10-27 01:38:35,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:38:35,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111100717] [2020-10-27 01:38:35,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:38:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:35,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:35,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:35,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:35,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:35,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:38,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:40,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:40,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 01:38:40,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:38:40,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 01:38:40,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 01:38:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:38:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 01:38:40,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:41,413 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 01:38:41,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:38:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:41,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:41,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:41,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:38:41,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:38:41,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 01:38:41,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:41,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:38:41,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:38:41,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:38:41,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:41,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:38:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:41,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:41,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:41,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:41,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:41,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:38:41,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:38:41,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 01:38:41,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:41,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:38:41,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:38:41,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:38:41,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:41,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 01:38:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:41,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:41,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:41,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:38:41,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:38:41,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:38:41,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:41,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:38:41,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:38:41,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:38:41,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:41,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:38:41,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111100717] [2020-10-27 01:38:41,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:38:41,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 01:38:41,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414880984] [2020-10-27 01:38:41,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 01:38:41,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:38:41,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 01:38:41,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2020-10-27 01:38:41,764 INFO L87 Difference]: Start difference. First operand 176 states and 246 transitions. Second operand 20 states. [2020-10-27 01:38:41,988 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 01:38:42,424 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 01:38:43,111 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 01:38:43,398 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 01:38:44,106 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 01:38:44,415 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 01:38:44,792 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 01:38:45,209 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 01:38:45,572 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 01:38:45,846 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 01:38:46,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:38:46,975 INFO L93 Difference]: Finished difference Result 211 states and 290 transitions. [2020-10-27 01:38:46,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 01:38:46,981 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 46 [2020-10-27 01:38:46,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:38:46,983 INFO L225 Difference]: With dead ends: 211 [2020-10-27 01:38:46,983 INFO L226 Difference]: Without dead ends: 188 [2020-10-27 01:38:46,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=160, Invalid=896, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 01:38:46,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-27 01:38:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 148. [2020-10-27 01:38:47,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-27 01:38:47,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 206 transitions. [2020-10-27 01:38:47,009 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 206 transitions. Word has length 46 [2020-10-27 01:38:47,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:38:47,009 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 206 transitions. [2020-10-27 01:38:47,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 01:38:47,009 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 206 transitions. [2020-10-27 01:38:47,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 01:38:47,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:38:47,011 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 01:38:47,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 01:38:47,011 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:38:47,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:38:47,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1496394837, now seen corresponding path program 2 times [2020-10-27 01:38:47,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:38:47,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246975585] [2020-10-27 01:38:47,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:38:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:47,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:47,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:47,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:47,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:47,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:47,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:52,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:52,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 01:38:52,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:38:52,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 01:38:52,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:52,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 01:38:52,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:38:52,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 01:38:52,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:52,497 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 01:38:52,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:38:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:52,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:52,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:52,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:38:52,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:38:52,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 01:38:52,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:52,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:38:52,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:38:52,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:38:52,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:52,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:38:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:52,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:52,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:52,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:52,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:52,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:38:52,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:38:52,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-27 01:38:52,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:52,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:38:52,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:38:52,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:38:52,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:52,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 01:38:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:52,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:52,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:52,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:38:52,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:38:52,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:38:52,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:52,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:38:52,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 01:38:52,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:38:52,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:53,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:38:53,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246975585] [2020-10-27 01:38:53,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:38:53,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 01:38:53,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762208378] [2020-10-27 01:38:53,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 01:38:53,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:38:53,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 01:38:53,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-10-27 01:38:53,003 INFO L87 Difference]: Start difference. First operand 148 states and 206 transitions. Second operand 17 states. [2020-10-27 01:38:53,219 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 01:38:53,617 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 01:38:54,433 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 01:38:54,790 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-27 01:38:55,218 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 01:38:55,518 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 01:38:56,089 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 01:38:56,395 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 01:38:56,716 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 01:38:57,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:38:57,999 INFO L93 Difference]: Finished difference Result 217 states and 294 transitions. [2020-10-27 01:38:58,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 01:38:58,000 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-10-27 01:38:58,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:38:58,003 INFO L225 Difference]: With dead ends: 217 [2020-10-27 01:38:58,003 INFO L226 Difference]: Without dead ends: 186 [2020-10-27 01:38:58,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2020-10-27 01:38:58,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-27 01:38:58,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 180. [2020-10-27 01:38:58,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-27 01:38:58,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 250 transitions. [2020-10-27 01:38:58,035 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 250 transitions. Word has length 47 [2020-10-27 01:38:58,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:38:58,035 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 250 transitions. [2020-10-27 01:38:58,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 01:38:58,035 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 250 transitions. [2020-10-27 01:38:58,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 01:38:58,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:38:58,037 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-27 01:38:58,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 01:38:58,037 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:38:58,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:38:58,038 INFO L82 PathProgramCache]: Analyzing trace with hash -235469741, now seen corresponding path program 3 times [2020-10-27 01:38:58,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:38:58,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506983709] [2020-10-27 01:38:58,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:38:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:58,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:58,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:58,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:58,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:58,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:00,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:03,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:39:03,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 01:39:03,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:39:03,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 01:39:03,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:39:03,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 01:39:03,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:39:03,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 01:39:03,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:39:03,731 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 01:39:03,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:39:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:39:03,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:03,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:39:03,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:39:03,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:39:03,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 01:39:03,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:39:03,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:39:03,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:39:03,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:39:03,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:39:03,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:39:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:39:03,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:03,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:03,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:03,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:39:03,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:39:03,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:39:03,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 01:39:03,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:39:03,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:39:03,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:39:03,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:39:03,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:39:04,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 01:39:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:39:04,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:04,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:39:04,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:39:04,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:39:04,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:39:04,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:39:04,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:39:04,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:39:04,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:39:04,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:39:04,144 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:39:04,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506983709] [2020-10-27 01:39:04,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:39:04,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 01:39:04,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71568489] [2020-10-27 01:39:04,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 01:39:04,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:39:04,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 01:39:04,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-27 01:39:04,146 INFO L87 Difference]: Start difference. First operand 180 states and 250 transitions. Second operand 21 states. [2020-10-27 01:39:04,375 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 01:39:04,931 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 01:39:06,017 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-27 01:39:06,426 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 01:39:06,877 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 01:39:07,254 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 01:39:07,641 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 01:39:08,230 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 01:39:08,636 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 01:39:09,339 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 01:39:09,644 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 01:39:09,991 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 01:39:10,468 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 01:39:10,800 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 01:39:13,915 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-27 01:39:14,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:39:14,777 INFO L93 Difference]: Finished difference Result 240 states and 324 transitions. [2020-10-27 01:39:14,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 01:39:14,778 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 49 [2020-10-27 01:39:14,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:39:14,780 INFO L225 Difference]: With dead ends: 240 [2020-10-27 01:39:14,780 INFO L226 Difference]: Without dead ends: 197 [2020-10-27 01:39:14,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=251, Invalid=1231, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 01:39:14,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-27 01:39:14,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 191. [2020-10-27 01:39:14,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-27 01:39:14,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 262 transitions. [2020-10-27 01:39:14,815 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 262 transitions. Word has length 49 [2020-10-27 01:39:14,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:39:14,815 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 262 transitions. [2020-10-27 01:39:14,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 01:39:14,816 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 262 transitions. [2020-10-27 01:39:14,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 01:39:14,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:39:14,817 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 01:39:14,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 01:39:14,818 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:39:14,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:39:14,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1749241360, now seen corresponding path program 2 times [2020-10-27 01:39:14,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:39:14,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387043400] [2020-10-27 01:39:14,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:39:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:39:14,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:14,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:14,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:14,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:15,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:16,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:19,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:39:19,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 01:39:19,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:39:19,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 01:39:19,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:39:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 01:39:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:39:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 01:39:19,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:39:20,486 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 01:39:20,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:39:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:39:20,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:20,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:39:20,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:39:20,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:39:20,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 01:39:20,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:39:20,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:39:20,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:39:20,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:39:20,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:39:20,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:39:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:39:20,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:20,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:20,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:20,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:39:20,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:39:20,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:39:20,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 01:39:20,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:39:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:39:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:39:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:39:20,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:39:20,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 01:39:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:39:20,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:20,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:39:20,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:39:20,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:39:20,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:39:20,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:39:20,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:39:20,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:39:20,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:39:20,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:39:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:39:21,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387043400] [2020-10-27 01:39:21,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:39:21,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 01:39:21,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615632628] [2020-10-27 01:39:21,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 01:39:21,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:39:21,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 01:39:21,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-10-27 01:39:21,077 INFO L87 Difference]: Start difference. First operand 191 states and 262 transitions. Second operand 20 states. [2020-10-27 01:39:21,293 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 01:39:21,850 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 01:39:22,872 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 01:39:23,225 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 01:39:23,710 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 01:39:24,057 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 01:39:24,722 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-27 01:39:25,039 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 01:39:25,460 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 01:39:25,875 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 01:39:26,316 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 01:39:26,634 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 01:39:29,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:39:29,905 INFO L93 Difference]: Finished difference Result 210 states and 284 transitions. [2020-10-27 01:39:29,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 01:39:29,906 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 48 [2020-10-27 01:39:29,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:39:29,907 INFO L225 Difference]: With dead ends: 210 [2020-10-27 01:39:29,907 INFO L226 Difference]: Without dead ends: 187 [2020-10-27 01:39:29,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=240, Invalid=1020, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 01:39:29,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-27 01:39:29,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 177. [2020-10-27 01:39:29,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-27 01:39:29,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 244 transitions. [2020-10-27 01:39:29,939 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 244 transitions. Word has length 48 [2020-10-27 01:39:29,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:39:29,939 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 244 transitions. [2020-10-27 01:39:29,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 01:39:29,939 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 244 transitions. [2020-10-27 01:39:29,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 01:39:29,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:39:29,941 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:39:29,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 01:39:29,941 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:39:29,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:39:29,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1803697542, now seen corresponding path program 1 times [2020-10-27 01:39:29,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:39:29,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728697929] [2020-10-27 01:39:29,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:39:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:39:29,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:30,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:30,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:30,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:30,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:31,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:34,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:39:34,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 01:39:34,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:39:34,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 01:39:34,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:39:34,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:39:34,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:39:34,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 01:39:34,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:39:35,164 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2020-10-27 01:39:35,410 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 27 [2020-10-27 01:39:35,780 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 01:39:35,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:39:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:39:35,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:35,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:39:35,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:39:35,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:39:35,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 01:39:35,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:39:35,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:39:35,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:39:35,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:39:35,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:39:35,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:39:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:39:35,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:35,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:35,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:35,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:39:35,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:39:35,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:39:35,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 01:39:35,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:39:35,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:39:35,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:39:35,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:39:35,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:39:36,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 01:39:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:39:36,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:36,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:39:36,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:39:36,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:39:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:39:36,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:39:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:39:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 01:39:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:39:36,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:39:36,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:39:36,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728697929] [2020-10-27 01:39:36,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:39:36,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 01:39:36,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494051324] [2020-10-27 01:39:36,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 01:39:36,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:39:36,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 01:39:36,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:39:36,086 INFO L87 Difference]: Start difference. First operand 177 states and 244 transitions. Second operand 18 states. [2020-10-27 01:39:36,288 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 01:39:36,796 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 01:39:37,715 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 01:39:38,097 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 01:39:38,751 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 01:39:39,081 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 01:39:39,916 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 01:39:40,240 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 01:39:40,528 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 01:39:41,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:39:41,943 INFO L93 Difference]: Finished difference Result 233 states and 314 transitions. [2020-10-27 01:39:41,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 01:39:41,944 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 49 [2020-10-27 01:39:41,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:39:41,946 INFO L225 Difference]: With dead ends: 233 [2020-10-27 01:39:41,946 INFO L226 Difference]: Without dead ends: 202 [2020-10-27 01:39:41,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=175, Invalid=755, Unknown=0, NotChecked=0, Total=930 [2020-10-27 01:39:41,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-27 01:39:41,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2020-10-27 01:39:41,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-27 01:39:41,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 274 transitions. [2020-10-27 01:39:41,978 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 274 transitions. Word has length 49 [2020-10-27 01:39:41,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:39:41,978 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 274 transitions. [2020-10-27 01:39:41,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 01:39:41,978 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 274 transitions. [2020-10-27 01:39:41,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 01:39:41,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:39:41,980 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:39:41,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 01:39:41,980 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:39:41,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:39:41,981 INFO L82 PathProgramCache]: Analyzing trace with hash -983500730, now seen corresponding path program 1 times [2020-10-27 01:39:41,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:39:41,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329449026] [2020-10-27 01:39:41,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:39:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:39:42,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:42,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:42,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:42,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:42,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:42,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:42,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:46,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:47,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:39:47,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 01:39:47,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 01:39:47,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 01:39:47,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:39:47,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:39:47,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:39:47,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 01:39:47,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:39:47,647 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 01:39:47,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:39:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:39:47,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:47,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:39:47,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:39:47,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:39:47,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 01:39:47,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:39:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:39:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:39:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:39:47,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:39:47,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:39:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:39:47,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:47,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:47,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:47,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:39:47,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:39:47,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:39:47,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 01:39:47,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:39:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:39:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:39:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:39:47,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:39:47,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 01:39:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:39:47,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:47,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:39:47,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:39:47,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:39:47,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:39:47,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:39:47,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:39:47,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:39:47,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:39:47,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:39:47,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 01:39:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:39:47,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:47,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:39:47,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:39:47,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:39:47,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:39:47,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:39:47,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:39:47,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 01:39:47,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:39:47,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:39:47,976 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:39:47,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329449026] [2020-10-27 01:39:47,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:39:47,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 01:39:47,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225978403] [2020-10-27 01:39:47,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 01:39:47,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:39:47,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 01:39:47,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:39:47,978 INFO L87 Difference]: Start difference. First operand 200 states and 274 transitions. Second operand 18 states. [2020-10-27 01:39:48,208 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 01:39:48,749 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 01:39:49,826 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-27 01:39:50,271 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 01:39:50,835 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 01:39:51,247 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-27 01:39:51,791 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 01:39:52,120 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 01:39:53,664 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 01:39:53,922 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 01:39:54,196 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 01:39:55,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:39:55,645 INFO L93 Difference]: Finished difference Result 228 states and 306 transitions. [2020-10-27 01:39:55,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 01:39:55,647 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 55 [2020-10-27 01:39:55,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:39:55,649 INFO L225 Difference]: With dead ends: 228 [2020-10-27 01:39:55,649 INFO L226 Difference]: Without dead ends: 207 [2020-10-27 01:39:55,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=188, Invalid=804, Unknown=0, NotChecked=0, Total=992 [2020-10-27 01:39:55,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-27 01:39:55,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 196. [2020-10-27 01:39:55,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-27 01:39:55,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 269 transitions. [2020-10-27 01:39:55,694 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 269 transitions. Word has length 55 [2020-10-27 01:39:55,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:39:55,695 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 269 transitions. [2020-10-27 01:39:55,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 01:39:55,695 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 269 transitions. [2020-10-27 01:39:55,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 01:39:55,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:39:55,697 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-27 01:39:55,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 01:39:55,697 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:39:55,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:39:55,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1315888937, now seen corresponding path program 4 times [2020-10-27 01:39:55,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:39:55,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81786086] [2020-10-27 01:39:55,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:39:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:39:55,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:55,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:55,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:55,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:56,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:39:59,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:00,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:00,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 01:40:00,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:40:00,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 01:40:00,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:00,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 01:40:00,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:40:00,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 01:40:00,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:40:01,177 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 01:40:01,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:40:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:01,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:01,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:01,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:40:01,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:40:01,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 01:40:01,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:01,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:40:01,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:40:01,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:40:01,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:40:01,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:40:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:01,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:01,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:01,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:01,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:01,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 01:40:01,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:40:01,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-27 01:40:01,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:01,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:40:01,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:40:01,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:40:01,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:40:01,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 01:40:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:01,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:01,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:01,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:40:01,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:40:01,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 01:40:01,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:40:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 01:40:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:40:01,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:40:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:40:01,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81786086] [2020-10-27 01:40:01,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:40:01,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 01:40:01,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463149572] [2020-10-27 01:40:01,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 01:40:01,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:40:01,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 01:40:01,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-10-27 01:40:01,930 INFO L87 Difference]: Start difference. First operand 196 states and 269 transitions. Second operand 18 states. [2020-10-27 01:40:02,137 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 01:40:02,655 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 01:40:03,079 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-10-27 01:40:03,370 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2020-10-27 01:40:03,889 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-27 01:40:04,258 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 01:40:04,740 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 01:40:05,062 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 01:40:05,748 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 01:40:06,033 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 01:40:06,307 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 01:40:09,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:40:09,795 INFO L93 Difference]: Finished difference Result 267 states and 361 transitions. [2020-10-27 01:40:09,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 01:40:09,796 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 49 [2020-10-27 01:40:09,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:40:09,798 INFO L225 Difference]: With dead ends: 267 [2020-10-27 01:40:09,799 INFO L226 Difference]: Without dead ends: 236 [2020-10-27 01:40:09,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2020-10-27 01:40:09,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-27 01:40:09,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 209. [2020-10-27 01:40:09,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-27 01:40:09,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 290 transitions. [2020-10-27 01:40:09,833 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 290 transitions. Word has length 49 [2020-10-27 01:40:09,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:40:09,833 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 290 transitions. [2020-10-27 01:40:09,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 01:40:09,834 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 290 transitions. [2020-10-27 01:40:09,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 01:40:09,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:40:09,835 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:40:09,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 01:40:09,836 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:40:09,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:40:09,836 INFO L82 PathProgramCache]: Analyzing trace with hash -972890005, now seen corresponding path program 1 times [2020-10-27 01:40:09,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:40:09,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481453506] [2020-10-27 01:40:09,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:40:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:09,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:09,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:09,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:09,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:10,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:12,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:13,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:14,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:14,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 01:40:14,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 01:40:14,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 01:40:14,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:14,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 01:40:14,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:40:14,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 01:40:14,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:40:15,076 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2020-10-27 01:40:15,298 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 18 [2020-10-27 01:40:15,813 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 01:40:15,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:40:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:15,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:15,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:15,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:40:15,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:40:15,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 01:40:15,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:40:15,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:40:15,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:40:15,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:40:15,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 01:40:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:15,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:15,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:15,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:15,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:15,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:40:15,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:40:15,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 01:40:15,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:15,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:40:15,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:40:15,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:40:15,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:40:16,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 01:40:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:16,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:16,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:16,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 01:40:16,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:40:16,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:40:16,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:16,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:40:16,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 01:40:16,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:40:16,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:40:16,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:40:16,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481453506] [2020-10-27 01:40:16,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:40:16,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 01:40:16,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161328607] [2020-10-27 01:40:16,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 01:40:16,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:40:16,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 01:40:16,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2020-10-27 01:40:16,206 INFO L87 Difference]: Start difference. First operand 209 states and 290 transitions. Second operand 21 states. [2020-10-27 01:40:16,436 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 01:40:17,252 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 01:40:18,384 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 01:40:18,797 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 01:40:19,597 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 01:40:19,947 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 01:40:20,900 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 01:40:21,234 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 01:40:21,522 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 01:40:21,785 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 01:40:22,283 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 01:40:22,627 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 01:40:23,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:40:23,969 INFO L93 Difference]: Finished difference Result 246 states and 332 transitions. [2020-10-27 01:40:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 01:40:23,970 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 50 [2020-10-27 01:40:23,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:40:23,972 INFO L225 Difference]: With dead ends: 246 [2020-10-27 01:40:23,972 INFO L226 Difference]: Without dead ends: 223 [2020-10-27 01:40:23,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=227, Invalid=1179, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 01:40:23,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-27 01:40:24,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 209. [2020-10-27 01:40:24,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-27 01:40:24,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 290 transitions. [2020-10-27 01:40:24,015 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 290 transitions. Word has length 50 [2020-10-27 01:40:24,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:40:24,015 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 290 transitions. [2020-10-27 01:40:24,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 01:40:24,015 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 290 transitions. [2020-10-27 01:40:24,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 01:40:24,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:40:24,017 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 01:40:24,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 01:40:24,017 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:40:24,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:40:24,018 INFO L82 PathProgramCache]: Analyzing trace with hash -84956127, now seen corresponding path program 2 times [2020-10-27 01:40:24,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:40:24,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409722181] [2020-10-27 01:40:24,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:40:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:40:24,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:24,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:24,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:24,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:24,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:25,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:25,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:40:29,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:40:29,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 01:40:29,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 01:40:29,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 01:40:29,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:40:29,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 01:40:29,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:40:29,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 01:40:29,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:40:29,223 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2020-10-27 01:40:29,545 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 23