/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/reducercommutativity/sep60-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:13:47,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:13:47,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:13:47,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:13:47,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:13:47,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:13:47,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:13:47,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:13:47,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:13:47,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:13:47,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:13:47,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:13:47,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:13:48,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:13:48,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:13:48,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:13:48,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:13:48,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:13:48,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:13:48,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:13:48,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:13:48,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:13:48,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:13:48,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:13:48,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:13:48,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:13:48,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:13:48,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:13:48,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:13:48,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:13:48,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:13:48,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:13:48,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:13:48,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:13:48,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:13:48,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:13:48,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:13:48,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:13:48,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:13:48,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:13:48,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:13:48,062 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 04:13:48,091 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:13:48,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:13:48,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:13:48,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:13:48,094 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:13:48,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:13:48,095 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:13:48,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:13:48,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:13:48,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:13:48,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:13:48,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:13:48,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:13:48,097 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:13:48,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:13:48,097 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:13:48,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:13:48,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:13:48,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:13:48,098 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:13:48,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:13:48,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:13:48,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:13:48,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:13:48,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:13:48,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:13:48,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:13:48,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:13:48,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:13:48,101 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:13:48,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:13:48,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:13:48,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:13:48,533 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:13:48,534 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:13:48,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep60-2.i [2020-10-27 04:13:48,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/488545315/7af66ede575648668270536d1482ec56/FLAG0bbf53d6f [2020-10-27 04:13:49,392 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:13:49,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sep60-2.i [2020-10-27 04:13:49,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/488545315/7af66ede575648668270536d1482ec56/FLAG0bbf53d6f [2020-10-27 04:13:49,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/488545315/7af66ede575648668270536d1482ec56 [2020-10-27 04:13:49,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:13:49,768 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:13:49,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:13:49,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:13:49,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:13:49,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:13:49" (1/1) ... [2020-10-27 04:13:49,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23bfff77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:49, skipping insertion in model container [2020-10-27 04:13:49,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:13:49" (1/1) ... [2020-10-27 04:13:49,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:13:49,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:13:50,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:13:50,009 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:13:50,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:13:50,055 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:13:50,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:50 WrapperNode [2020-10-27 04:13:50,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:13:50,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:13:50,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:13:50,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:13:50,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:50" (1/1) ... [2020-10-27 04:13:50,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:50" (1/1) ... [2020-10-27 04:13:50,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:50" (1/1) ... [2020-10-27 04:13:50,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:50" (1/1) ... [2020-10-27 04:13:50,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:50" (1/1) ... [2020-10-27 04:13:50,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:50" (1/1) ... [2020-10-27 04:13:50,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:50" (1/1) ... [2020-10-27 04:13:50,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:13:50,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:13:50,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:13:50,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:13:50,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:50" (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 04:13:50,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:13:50,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:13:50,217 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:13:50,217 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2020-10-27 04:13:50,217 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:13:50,218 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:13:50,218 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:13:50,218 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 04:13:50,219 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 04:13:50,219 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:13:50,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:13:50,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 04:13:50,221 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2020-10-27 04:13:50,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:13:50,222 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:13:50,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:13:50,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:13:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:13:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:13:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:13:50,624 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:13:50,625 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 04:13:50,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:13:50 BoogieIcfgContainer [2020-10-27 04:13:50,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:13:50,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:13:50,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:13:50,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:13:50,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:13:49" (1/3) ... [2020-10-27 04:13:50,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1db846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:13:50, skipping insertion in model container [2020-10-27 04:13:50,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:13:50" (2/3) ... [2020-10-27 04:13:50,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1db846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:13:50, skipping insertion in model container [2020-10-27 04:13:50,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:13:50" (3/3) ... [2020-10-27 04:13:50,642 INFO L111 eAbstractionObserver]: Analyzing ICFG sep60-2.i [2020-10-27 04:13:50,660 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:13:50,666 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:13:50,684 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:13:50,719 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:13:50,719 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:13:50,720 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:13:50,720 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:13:50,720 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:13:50,720 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:13:50,721 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:13:50,721 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:13:50,745 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-27 04:13:50,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 04:13:50,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:50,768 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-27 04:13:50,769 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:50,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:50,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1788891338, now seen corresponding path program 1 times [2020-10-27 04:13:50,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:50,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24288064] [2020-10-27 04:13:50,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:51,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:51,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:51,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:51,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:51,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:51,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:52,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:52,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:13:52,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:13:52,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1613 [2020-10-27 04:13:52,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:52,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:52,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:13:52,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:52,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:13:52,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:52,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:52,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:52,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:52,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:52,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:13:52,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:52,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:52,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:52,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:52,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:13:52,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 04:13:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:52,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:52,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:52,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:52,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:13:52,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:52,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:13:52,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:52,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:52,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:13:52,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:52,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:13:52,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 04:13:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:52,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:52,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:52,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:52,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:13:52,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:52,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:13:52,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:52,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:52,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:13:52,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:52,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:52,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:13:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:52,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:52,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:52,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:52,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:13:52,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:52,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:13:52,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:52,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:52,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:13:52,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:52,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:13:52,932 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 04:13:52,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24288064] [2020-10-27 04:13:52,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:13:52,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 04:13:52,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445758216] [2020-10-27 04:13:52,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 04:13:52,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:52,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 04:13:52,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 04:13:52,990 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-27 04:13:53,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:53,148 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2020-10-27 04:13:53,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 04:13:53,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 04:13:53,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:53,160 INFO L225 Difference]: With dead ends: 62 [2020-10-27 04:13:53,160 INFO L226 Difference]: Without dead ends: 29 [2020-10-27 04:13:53,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 04:13:53,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-27 04:13:53,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-27 04:13:53,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 04:13:53,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-27 04:13:53,214 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 34 [2020-10-27 04:13:53,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:53,215 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-27 04:13:53,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 04:13:53,215 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-27 04:13:53,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 04:13:53,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:53,218 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-27 04:13:53,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:13:53,218 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:53,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:53,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1899018129, now seen corresponding path program 1 times [2020-10-27 04:13:53,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:53,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040180628] [2020-10-27 04:13:53,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:53,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:53,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:53,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:53,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:53,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:53,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:55,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:55,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:13:55,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:13:55,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1859 [2020-10-27 04:13:55,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:13:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:13:55,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:13:55,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:55,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:13:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:55,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:55,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:55,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:13:55,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:13:55,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:13:55,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:55,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:13:55,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:13:55,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:13:55,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:55,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 04:13:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:55,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:55,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:55,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:55,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:13:55,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:55,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:13:55,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:55,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:13:55,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:55,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:13:55,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:13:55,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 04:13:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:55,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:55,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:55,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:55,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:13:55,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:55,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:13:55,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:13:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:55,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:13:55,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:55,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:13:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:55,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:55,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:55,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:13:55,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:13:55,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:13:55,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:13:55,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:13:55,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:13:55,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:13:55,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:13:55,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:13:55,255 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 04:13:55,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040180628] [2020-10-27 04:13:55,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:13:55,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:13:55,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61600455] [2020-10-27 04:13:55,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:13:55,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:13:55,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:13:55,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:13:55,262 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 5 states. [2020-10-27 04:13:55,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:13:55,473 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2020-10-27 04:13:55,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:13:55,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-27 04:13:55,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:13:55,475 INFO L225 Difference]: With dead ends: 55 [2020-10-27 04:13:55,475 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 04:13:55,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:13:55,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 04:13:55,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2020-10-27 04:13:55,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 04:13:55,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-27 04:13:55,487 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 34 [2020-10-27 04:13:55,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:13:55,487 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-27 04:13:55,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:13:55,487 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-27 04:13:55,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 04:13:55,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:13:55,489 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-27 04:13:55,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:13:55,490 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:13:55,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:13:55,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1088396992, now seen corresponding path program 1 times [2020-10-27 04:13:55,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:13:55,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010041254] [2020-10-27 04:13:55,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:13:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:13:55,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:55,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:55,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:55,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:55,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:13:57,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:00,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:00,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 04:14:00,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:14:00,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:14:00,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:00,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:14:00,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:00,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:14:00,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:00,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:00,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:00,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:00,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:00,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:00,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:14:00,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:00,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:00,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:00,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:00,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:00,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 04:14:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:00,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:00,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:00,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:00,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:14:00,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:00,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 04:14:00,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:00,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:14:00,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:00,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:14:00,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:00,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 04:14:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:00,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:00,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:00,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:00,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:14:00,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:00,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 04:14:00,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:00,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:14:00,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:00,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:14:00,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:00,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:14:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:00,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:00,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:00,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:00,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:14:00,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:00,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 04:14:00,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:00,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:14:00,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:00,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:14:00,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 04:14:00,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010041254] [2020-10-27 04:14:00,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:00,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 04:14:00,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776703388] [2020-10-27 04:14:00,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:14:00,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:00,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:14:00,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:14:00,717 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 7 states. [2020-10-27 04:14:00,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:00,953 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-10-27 04:14:00,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:14:00,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-10-27 04:14:00,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:00,955 INFO L225 Difference]: With dead ends: 61 [2020-10-27 04:14:00,955 INFO L226 Difference]: Without dead ends: 39 [2020-10-27 04:14:00,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:14:00,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-27 04:14:00,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-10-27 04:14:00,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 04:14:00,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-27 04:14:00,966 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 45 [2020-10-27 04:14:00,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:00,966 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-27 04:14:00,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:14:00,966 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-27 04:14:00,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 04:14:00,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:00,969 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2020-10-27 04:14:00,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:14:00,969 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:00,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:00,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1287598475, now seen corresponding path program 2 times [2020-10-27 04:14:00,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:00,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791495918] [2020-10-27 04:14:00,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:01,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:01,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:01,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:01,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:03,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:05,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:05,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:14:05,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:14:05,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:14:05,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:06,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:14:06,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:06,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:14:06,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:06,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:06,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:06,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:06,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:06,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:06,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:14:06,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:06,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:06,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:06,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:14:06,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 04:14:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:06,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:06,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:06,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:06,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:14:06,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:06,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 04:14:06,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:06,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:14:06,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:06,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:14:06,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:06,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 04:14:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:06,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:06,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:06,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:06,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:14:06,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:06,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 04:14:06,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:06,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:14:06,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:06,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:14:06,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:06,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:14:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:06,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:06,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:06,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:06,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:14:06,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:06,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 04:14:06,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:06,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:14:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:14:06,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:06,405 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 04:14:06,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791495918] [2020-10-27 04:14:06,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:06,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 04:14:06,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775484887] [2020-10-27 04:14:06,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:14:06,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:06,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:14:06,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:14:06,408 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 9 states. [2020-10-27 04:14:06,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:06,676 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2020-10-27 04:14:06,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 04:14:06,677 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-27 04:14:06,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:06,678 INFO L225 Difference]: With dead ends: 69 [2020-10-27 04:14:06,678 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 04:14:06,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:14:06,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 04:14:06,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-10-27 04:14:06,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 04:14:06,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-27 04:14:06,688 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 56 [2020-10-27 04:14:06,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:06,688 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-27 04:14:06,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:14:06,688 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-27 04:14:06,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 04:14:06,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:06,690 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 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] [2020-10-27 04:14:06,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:14:06,690 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:06,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:06,691 INFO L82 PathProgramCache]: Analyzing trace with hash 317614428, now seen corresponding path program 3 times [2020-10-27 04:14:06,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:06,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126762750] [2020-10-27 04:14:06,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:06,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:06,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:06,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:06,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:11,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:11,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 04:14:11,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:11,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 04:14:11,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:11,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:14:11,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:11,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:14:11,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:11,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:11,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:11,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:11,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:11,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:11,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:14:11,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:11,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:11,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:11,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:11,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:11,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 04:14:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:11,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:11,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:11,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:11,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 04:14:11,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:11,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 04:14:11,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:14:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:14:11,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:11,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:14:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:12,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:12,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:12,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:12,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 04:14:12,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:12,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 04:14:12,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:12,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:14:12,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:12,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:14:12,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:12,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:14:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:12,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:12,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:12,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:12,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 04:14:12,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:12,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 04:14:12,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:14:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:12,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:14:12,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:12,241 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 36 proven. 81 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-27 04:14:12,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126762750] [2020-10-27 04:14:12,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:12,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 04:14:12,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191623038] [2020-10-27 04:14:12,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:14:12,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:12,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:14:12,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:14:12,244 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 11 states. [2020-10-27 04:14:12,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:12,565 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2020-10-27 04:14:12,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 04:14:12,566 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-27 04:14:12,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:12,567 INFO L225 Difference]: With dead ends: 77 [2020-10-27 04:14:12,567 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 04:14:12,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:14:12,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 04:14:12,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-10-27 04:14:12,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 04:14:12,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-10-27 04:14:12,578 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 67 [2020-10-27 04:14:12,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:12,578 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-10-27 04:14:12,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:14:12,578 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-10-27 04:14:12,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 04:14:12,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:12,580 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 3, 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] [2020-10-27 04:14:12,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:14:12,580 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:12,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:12,581 INFO L82 PathProgramCache]: Analyzing trace with hash 58083673, now seen corresponding path program 4 times [2020-10-27 04:14:12,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:12,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927151401] [2020-10-27 04:14:12,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:12,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:12,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:12,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:12,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:17,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:17,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 04:14:17,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:17,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 04:14:17,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:17,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:14:17,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:17,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:14:17,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:17,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:17,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:17,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:17,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:17,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:17,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:14:17,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:17,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:17,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:17,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:17,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:17,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 04:14:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:17,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:17,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:17,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:17,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:14:17,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:17,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 04:14:17,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:17,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:14:17,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:17,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:14:17,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:17,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:14:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:17,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:17,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:18,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:18,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:14:18,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:18,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 04:14:18,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:14:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:14:18,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:18,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:14:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:18,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:18,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:18,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:18,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:14:18,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:18,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 04:14:18,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:14:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:14:18,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:18,273 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 66 proven. 148 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 04:14:18,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927151401] [2020-10-27 04:14:18,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:18,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 04:14:18,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246468541] [2020-10-27 04:14:18,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:14:18,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:18,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:14:18,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:14:18,280 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 13 states. [2020-10-27 04:14:18,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:18,692 INFO L93 Difference]: Finished difference Result 85 states and 107 transitions. [2020-10-27 04:14:18,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:14:18,694 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 78 [2020-10-27 04:14:18,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:18,695 INFO L225 Difference]: With dead ends: 85 [2020-10-27 04:14:18,695 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 04:14:18,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:14:18,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 04:14:18,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-27 04:14:18,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-27 04:14:18,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2020-10-27 04:14:18,713 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 78 [2020-10-27 04:14:18,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:18,713 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2020-10-27 04:14:18,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:14:18,714 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2020-10-27 04:14:18,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 04:14:18,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:18,721 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 5, 5, 3, 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] [2020-10-27 04:14:18,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:14:18,722 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:18,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:18,723 INFO L82 PathProgramCache]: Analyzing trace with hash -34804360, now seen corresponding path program 5 times [2020-10-27 04:14:18,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:18,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284313985] [2020-10-27 04:14:18,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:18,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:18,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:18,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:18,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:23,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:23,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 04:14:23,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:23,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-27 04:14:23,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:23,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:14:23,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:23,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:14:23,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:23,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:23,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:23,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:23,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:23,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:23,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:14:23,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:23,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:23,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:23,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 04:14:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:23,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:23,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:24,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:24,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:14:24,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:24,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-27 04:14:24,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:24,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:14:24,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:24,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 04:14:24,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:24,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:14:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:24,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:24,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:24,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:24,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:14:24,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:24,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-27 04:14:24,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:24,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:14:24,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:24,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 04:14:24,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:24,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:14:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:24,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:24,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:24,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:24,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:14:24,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:24,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 04:14:24,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:24,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:14:24,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:24,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 04:14:24,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 105 proven. 235 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-27 04:14:24,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284313985] [2020-10-27 04:14:24,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:24,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 04:14:24,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876031574] [2020-10-27 04:14:24,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:14:24,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:24,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:14:24,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:14:24,504 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 15 states. [2020-10-27 04:14:24,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:24,949 INFO L93 Difference]: Finished difference Result 93 states and 117 transitions. [2020-10-27 04:14:24,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:14:24,949 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-10-27 04:14:24,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:24,951 INFO L225 Difference]: With dead ends: 93 [2020-10-27 04:14:24,951 INFO L226 Difference]: Without dead ends: 59 [2020-10-27 04:14:24,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:14:24,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-27 04:14:24,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-10-27 04:14:24,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 04:14:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-10-27 04:14:24,961 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 89 [2020-10-27 04:14:24,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:24,961 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-10-27 04:14:24,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:14:24,962 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-10-27 04:14:24,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 04:14:24,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:24,963 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 6, 6, 3, 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] [2020-10-27 04:14:24,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:14:24,963 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:24,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:24,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1929013309, now seen corresponding path program 6 times [2020-10-27 04:14:24,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:24,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122823359] [2020-10-27 04:14:24,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:25,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:25,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:25,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:25,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:30,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:30,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 04:14:30,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:30,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 04:14:30,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:30,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:14:30,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:30,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:14:30,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:30,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:30,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:30,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:30,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:30,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:30,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:14:30,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:30,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:30,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:30,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:30,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:30,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 04:14:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:30,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:30,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:30,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:30,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:14:30,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:30,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-27 04:14:30,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:14:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:14:30,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:30,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:14:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:30,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:30,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:30,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:30,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:14:30,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:30,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-27 04:14:30,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:30,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:14:30,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:30,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:14:30,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:30,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:14:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:30,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:30,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:30,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:30,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:14:30,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:30,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-27 04:14:30,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:30,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:14:30,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:30,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:14:30,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:30,894 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 153 proven. 342 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 04:14:30,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122823359] [2020-10-27 04:14:30,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:30,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 04:14:30,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746855107] [2020-10-27 04:14:30,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 04:14:30,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:30,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 04:14:30,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-27 04:14:30,897 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 17 states. [2020-10-27 04:14:31,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:31,403 INFO L93 Difference]: Finished difference Result 101 states and 127 transitions. [2020-10-27 04:14:31,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 04:14:31,404 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 100 [2020-10-27 04:14:31,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:31,405 INFO L225 Difference]: With dead ends: 101 [2020-10-27 04:14:31,405 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 04:14:31,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-10-27 04:14:31,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 04:14:31,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-10-27 04:14:31,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 04:14:31,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2020-10-27 04:14:31,419 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 100 [2020-10-27 04:14:31,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:31,419 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2020-10-27 04:14:31,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 04:14:31,419 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2020-10-27 04:14:31,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 04:14:31,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:31,423 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 7, 7, 3, 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] [2020-10-27 04:14:31,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:14:31,423 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:31,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:31,424 INFO L82 PathProgramCache]: Analyzing trace with hash 506637716, now seen corresponding path program 7 times [2020-10-27 04:14:31,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:31,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086233456] [2020-10-27 04:14:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:31,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:31,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:31,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:31,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:36,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:36,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 04:14:36,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:36,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 04:14:36,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:14:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:14:36,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:36,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:36,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:36,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:36,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:36,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:36,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:14:36,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:36,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:36,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 04:14:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:36,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:36,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:36,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:36,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 04:14:36,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:36,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-27 04:14:36,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:36,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:14:36,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:36,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:14:36,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:36,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 04:14:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:37,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:37,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:37,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:37,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 04:14:37,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:37,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-27 04:14:37,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:14:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:14:37,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:37,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:14:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:37,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:37,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:37,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:37,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 04:14:37,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:37,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 04:14:37,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:37,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:14:37,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:37,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:14:37,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 210 proven. 469 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-27 04:14:37,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086233456] [2020-10-27 04:14:37,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:37,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 04:14:37,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706799258] [2020-10-27 04:14:37,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 04:14:37,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:37,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 04:14:37,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:14:37,401 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand 19 states. [2020-10-27 04:14:38,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:38,043 INFO L93 Difference]: Finished difference Result 109 states and 137 transitions. [2020-10-27 04:14:38,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:14:38,044 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 111 [2020-10-27 04:14:38,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:38,045 INFO L225 Difference]: With dead ends: 109 [2020-10-27 04:14:38,045 INFO L226 Difference]: Without dead ends: 69 [2020-10-27 04:14:38,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:14:38,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-27 04:14:38,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2020-10-27 04:14:38,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 04:14:38,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2020-10-27 04:14:38,067 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 111 [2020-10-27 04:14:38,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:38,067 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2020-10-27 04:14:38,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 04:14:38,068 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2020-10-27 04:14:38,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 04:14:38,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:38,072 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 8, 8, 3, 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] [2020-10-27 04:14:38,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:14:38,072 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:38,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:38,073 INFO L82 PathProgramCache]: Analyzing trace with hash 234253089, now seen corresponding path program 8 times [2020-10-27 04:14:38,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:38,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860538925] [2020-10-27 04:14:38,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:38,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:38,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:38,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:38,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:43,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:43,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 04:14:43,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:43,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 04:14:43,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:14:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:14:43,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:43,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:43,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:43,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:43,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:43,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:43,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:14:43,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:43,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:43,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:43,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:43,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:43,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:14:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:43,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:43,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:43,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:43,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:14:43,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:43,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-27 04:14:43,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:14:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:14:43,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:43,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:14:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:43,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:43,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:43,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:43,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:14:43,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:43,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-27 04:14:43,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:14:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:14:43,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:43,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 04:14:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:43,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:43,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:44,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:44,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:14:44,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:44,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-27 04:14:44,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:14:44,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:44,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:14:44,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:44,319 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 276 proven. 616 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-27 04:14:44,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860538925] [2020-10-27 04:14:44,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:44,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 04:14:44,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228504491] [2020-10-27 04:14:44,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 04:14:44,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:44,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 04:14:44,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:14:44,322 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 21 states. [2020-10-27 04:14:44,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:44,957 INFO L93 Difference]: Finished difference Result 117 states and 147 transitions. [2020-10-27 04:14:44,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:14:44,957 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 122 [2020-10-27 04:14:44,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:44,958 INFO L225 Difference]: With dead ends: 117 [2020-10-27 04:14:44,958 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 04:14:44,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2020-10-27 04:14:44,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 04:14:44,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2020-10-27 04:14:44,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-27 04:14:44,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2020-10-27 04:14:44,975 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 122 [2020-10-27 04:14:44,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:44,976 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2020-10-27 04:14:44,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 04:14:44,976 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2020-10-27 04:14:44,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 04:14:44,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:44,982 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 9, 9, 3, 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] [2020-10-27 04:14:44,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:14:44,982 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:44,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:44,983 INFO L82 PathProgramCache]: Analyzing trace with hash 349596080, now seen corresponding path program 9 times [2020-10-27 04:14:44,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:44,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332017607] [2020-10-27 04:14:44,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:45,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:45,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:45,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:45,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:50,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:50,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 04:14:50,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:50,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 04:14:50,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:50,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:14:50,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:50,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:14:50,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:50,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:50,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:50,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:50,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:50,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:50,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:14:50,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:50,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:50,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:14:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:50,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:50,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:50,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:50,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 04:14:50,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:50,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-27 04:14:50,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:50,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:14:50,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:50,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 04:14:50,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:50,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:14:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:50,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:50,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:51,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 04:14:51,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:51,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-27 04:14:51,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:14:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 04:14:51,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:51,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 04:14:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:51,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:51,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 04:14:51,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:51,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-27 04:14:51,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:51,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:14:51,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:51,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 04:14:51,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:51,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 351 proven. 783 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-27 04:14:51,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332017607] [2020-10-27 04:14:51,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:51,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 04:14:51,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190950539] [2020-10-27 04:14:51,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 04:14:51,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:51,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 04:14:51,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:14:51,309 INFO L87 Difference]: Start difference. First operand 71 states and 84 transitions. Second operand 23 states. [2020-10-27 04:14:52,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:52,117 INFO L93 Difference]: Finished difference Result 125 states and 157 transitions. [2020-10-27 04:14:52,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 04:14:52,118 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 133 [2020-10-27 04:14:52,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:52,120 INFO L225 Difference]: With dead ends: 125 [2020-10-27 04:14:52,120 INFO L226 Difference]: Without dead ends: 79 [2020-10-27 04:14:52,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:14:52,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-27 04:14:52,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-10-27 04:14:52,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 04:14:52,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2020-10-27 04:14:52,130 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 133 [2020-10-27 04:14:52,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:52,130 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2020-10-27 04:14:52,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 04:14:52,131 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2020-10-27 04:14:52,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 04:14:52,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:52,132 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 10, 10, 3, 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] [2020-10-27 04:14:52,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:14:52,133 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:52,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:52,133 INFO L82 PathProgramCache]: Analyzing trace with hash 529764869, now seen corresponding path program 10 times [2020-10-27 04:14:52,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:52,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445844366] [2020-10-27 04:14:52,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:52,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:52,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:52,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:52,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:57,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 04:14:57,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:14:57,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 04:14:57,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:57,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:14:57,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:57,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:14:57,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:57,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:57,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:57,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:57,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:57,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:14:57,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:57,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:57,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:57,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:57,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:57,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:14:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:57,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:57,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:14:57,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:57,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-27 04:14:57,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:57,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:14:57,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:57,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:14:57,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:57,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:14:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:57,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:58,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:58,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:14:58,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:58,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-27 04:14:58,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:58,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:14:58,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:58,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:14:58,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:58,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 04:14:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:58,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:58,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:58,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:58,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:14:58,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:58,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-27 04:14:58,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:58,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:14:58,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:58,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:14:58,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 435 proven. 970 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 04:14:58,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445844366] [2020-10-27 04:14:58,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:58,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 04:14:58,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379936205] [2020-10-27 04:14:58,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 04:14:58,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:58,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 04:14:58,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-10-27 04:14:58,477 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand 25 states. [2020-10-27 04:14:59,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:59,325 INFO L93 Difference]: Finished difference Result 133 states and 167 transitions. [2020-10-27 04:14:59,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:14:59,326 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 144 [2020-10-27 04:14:59,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:59,327 INFO L225 Difference]: With dead ends: 133 [2020-10-27 04:14:59,327 INFO L226 Difference]: Without dead ends: 84 [2020-10-27 04:14:59,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 04:14:59,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-27 04:14:59,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2020-10-27 04:14:59,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-27 04:14:59,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2020-10-27 04:14:59,337 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 144 [2020-10-27 04:14:59,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:59,338 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2020-10-27 04:14:59,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 04:14:59,338 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2020-10-27 04:14:59,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-27 04:14:59,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:59,340 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 11, 11, 3, 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] [2020-10-27 04:14:59,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:14:59,340 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:59,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:59,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1106174412, now seen corresponding path program 11 times [2020-10-27 04:14:59,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:59,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905519419] [2020-10-27 04:14:59,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:59,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:59,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:59,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:59,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:04,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:04,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 04:15:04,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:04,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 04:15:04,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:15:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:15:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:04,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:04,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:04,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:04,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:04,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:04,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:04,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:04,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:04,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:04,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:04,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:04,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:15:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:04,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:04,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:04,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:04,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 04:15:04,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:04,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-27 04:15:04,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:04,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:15:04,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:04,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 04:15:04,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:05,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:15:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:05,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:05,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:05,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:05,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 04:15:05,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:05,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-27 04:15:05,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:05,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:15:05,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:05,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 04:15:05,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:05,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 04:15:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:05,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:05,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:05,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:05,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 04:15:05,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:05,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-27 04:15:05,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:05,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:15:05,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:05,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 04:15:05,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1819 backedges. 528 proven. 1177 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-27 04:15:05,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905519419] [2020-10-27 04:15:05,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:05,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 04:15:05,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488791228] [2020-10-27 04:15:05,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 04:15:05,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:05,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 04:15:05,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:15:05,967 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand 27 states. [2020-10-27 04:15:06,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:06,851 INFO L93 Difference]: Finished difference Result 141 states and 177 transitions. [2020-10-27 04:15:06,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 04:15:06,851 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 155 [2020-10-27 04:15:06,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:06,855 INFO L225 Difference]: With dead ends: 141 [2020-10-27 04:15:06,855 INFO L226 Difference]: Without dead ends: 89 [2020-10-27 04:15:06,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 04:15:06,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-27 04:15:06,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2020-10-27 04:15:06,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-27 04:15:06,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2020-10-27 04:15:06,871 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 155 [2020-10-27 04:15:06,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:06,871 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2020-10-27 04:15:06,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 04:15:06,873 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2020-10-27 04:15:06,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 04:15:06,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:06,875 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 12, 12, 3, 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] [2020-10-27 04:15:06,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:15:06,876 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:06,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:06,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1979391209, now seen corresponding path program 12 times [2020-10-27 04:15:06,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:06,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599655939] [2020-10-27 04:15:06,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:06,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:06,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:07,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:07,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:11,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:11,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 04:15:11,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:11,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 04:15:11,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:15:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:15:11,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:12,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:12,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:12,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:12,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:12,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:12,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:12,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:12,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:12,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:15:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:12,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:12,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:12,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:12,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:15:12,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:12,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-27 04:15:12,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:12,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:15:12,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:12,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:15:12,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:12,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:15:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:12,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:12,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:13,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:13,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:15:13,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:13,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-10-27 04:15:13,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:15:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:15:13,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:13,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 04:15:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:13,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:13,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:13,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:13,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:15:13,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-27 04:15:13,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:15:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:15:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:13,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2157 backedges. 630 proven. 1404 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-27 04:15:13,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599655939] [2020-10-27 04:15:13,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:13,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 04:15:13,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989862364] [2020-10-27 04:15:13,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 04:15:13,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:13,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 04:15:13,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812 [2020-10-27 04:15:13,781 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand 29 states. [2020-10-27 04:15:14,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:14,894 INFO L93 Difference]: Finished difference Result 149 states and 187 transitions. [2020-10-27 04:15:14,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 04:15:14,894 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 166 [2020-10-27 04:15:14,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:14,896 INFO L225 Difference]: With dead ends: 149 [2020-10-27 04:15:14,896 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 04:15:14,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=419, Invalid=1303, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 04:15:14,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 04:15:14,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2020-10-27 04:15:14,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-27 04:15:14,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 108 transitions. [2020-10-27 04:15:14,906 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 108 transitions. Word has length 166 [2020-10-27 04:15:14,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:14,907 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 108 transitions. [2020-10-27 04:15:14,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 04:15:14,907 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 108 transitions. [2020-10-27 04:15:14,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-27 04:15:14,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:14,909 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 13, 13, 3, 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] [2020-10-27 04:15:14,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:15:14,909 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:14,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:14,910 INFO L82 PathProgramCache]: Analyzing trace with hash -2137860632, now seen corresponding path program 13 times [2020-10-27 04:15:14,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:14,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751510151] [2020-10-27 04:15:14,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:14,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:15,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:15,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:15,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:19,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:19,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-27 04:15:19,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:19,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:15:19,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:19,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:15:19,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:19,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:15:19,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:20,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:20,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:20,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:20,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:20,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:20,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:20,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:20,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:20,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:20,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:20,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:20,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 04:15:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:20,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:20,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:20,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:20,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:15:20,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:20,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-10-27 04:15:20,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:20,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:15:20,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:20,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 04:15:20,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:20,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:15:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:20,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:21,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:21,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:21,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:15:21,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:21,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-27 04:15:21,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:21,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:15:21,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:21,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 04:15:21,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:21,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 04:15:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:21,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:21,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:21,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:21,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:15:21,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:21,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-27 04:15:21,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:21,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:15:21,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:21,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 04:15:21,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2524 backedges. 741 proven. 1651 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-27 04:15:21,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751510151] [2020-10-27 04:15:21,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:21,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 04:15:21,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785380993] [2020-10-27 04:15:21,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 04:15:21,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:21,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 04:15:21,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=689, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:15:21,968 INFO L87 Difference]: Start difference. First operand 91 states and 108 transitions. Second operand 31 states. [2020-10-27 04:15:23,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:23,093 INFO L93 Difference]: Finished difference Result 157 states and 197 transitions. [2020-10-27 04:15:23,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 04:15:23,094 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 177 [2020-10-27 04:15:23,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:23,096 INFO L225 Difference]: With dead ends: 157 [2020-10-27 04:15:23,096 INFO L226 Difference]: Without dead ends: 99 [2020-10-27 04:15:23,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=479, Invalid=1501, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 04:15:23,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-27 04:15:23,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2020-10-27 04:15:23,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 04:15:23,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 114 transitions. [2020-10-27 04:15:23,106 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 114 transitions. Word has length 177 [2020-10-27 04:15:23,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:23,107 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 114 transitions. [2020-10-27 04:15:23,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 04:15:23,107 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 114 transitions. [2020-10-27 04:15:23,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 04:15:23,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:23,109 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 14, 14, 3, 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] [2020-10-27 04:15:23,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:15:23,110 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:23,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:23,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1504293939, now seen corresponding path program 14 times [2020-10-27 04:15:23,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:23,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437155195] [2020-10-27 04:15:23,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:23,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:23,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:23,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:23,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:28,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-27 04:15:28,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:28,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-27 04:15:28,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:15:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:15:28,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:28,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:28,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:28,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:28,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:28,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:28,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:28,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:28,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:28,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:28,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:28,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 04:15:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:28,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:28,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:15:28,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:28,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-10-27 04:15:28,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:15:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:15:28,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:29,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:15:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:29,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:29,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:29,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:29,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:15:29,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:29,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-27 04:15:29,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:15:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:15:29,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:29,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 04:15:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:29,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:29,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:30,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:30,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:15:30,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:30,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-10-27 04:15:30,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:30,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:15:30,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:30,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:15:30,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:30,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2920 backedges. 861 proven. 1918 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-27 04:15:30,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437155195] [2020-10-27 04:15:30,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:30,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 04:15:30,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287357700] [2020-10-27 04:15:30,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 04:15:30,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:30,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 04:15:30,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:15:30,470 INFO L87 Difference]: Start difference. First operand 96 states and 114 transitions. Second operand 33 states. [2020-10-27 04:15:31,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:31,658 INFO L93 Difference]: Finished difference Result 165 states and 207 transitions. [2020-10-27 04:15:31,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 04:15:31,659 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 188 [2020-10-27 04:15:31,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:31,661 INFO L225 Difference]: With dead ends: 165 [2020-10-27 04:15:31,661 INFO L226 Difference]: Without dead ends: 104 [2020-10-27 04:15:31,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=543, Invalid=1713, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 04:15:31,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-27 04:15:31,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2020-10-27 04:15:31,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-27 04:15:31,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 120 transitions. [2020-10-27 04:15:31,671 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 120 transitions. Word has length 188 [2020-10-27 04:15:31,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:31,671 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 120 transitions. [2020-10-27 04:15:31,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 04:15:31,671 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 120 transitions. [2020-10-27 04:15:31,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-27 04:15:31,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:31,674 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 15, 15, 3, 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] [2020-10-27 04:15:31,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:15:31,674 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:31,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:31,675 INFO L82 PathProgramCache]: Analyzing trace with hash -489093628, now seen corresponding path program 15 times [2020-10-27 04:15:31,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:31,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349363644] [2020-10-27 04:15:31,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:31,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:31,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:31,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:31,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:36,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:36,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-27 04:15:36,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:36,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:15:36,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:36,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:15:36,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:36,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:15:36,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:37,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:37,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:37,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:37,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:37,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:37,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:37,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:37,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:37,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:37,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:37,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:37,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 04:15:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:37,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:37,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:37,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:37,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 04:15:37,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:37,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-10-27 04:15:37,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:37,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:15:37,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:37,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:15:37,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:38,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 04:15:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:38,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:38,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:38,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:38,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 04:15:38,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:38,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 817 [2020-10-27 04:15:38,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:38,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:15:38,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:15:38,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:38,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 04:15:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:38,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:38,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:39,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:39,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 04:15:39,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:39,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-27 04:15:39,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:39,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:15:39,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:39,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:15:39,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:39,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3345 backedges. 990 proven. 2205 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-27 04:15:39,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349363644] [2020-10-27 04:15:39,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:39,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 04:15:39,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342585628] [2020-10-27 04:15:39,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 04:15:39,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:39,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 04:15:39,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 04:15:39,557 INFO L87 Difference]: Start difference. First operand 101 states and 120 transitions. Second operand 35 states. [2020-10-27 04:15:40,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:40,868 INFO L93 Difference]: Finished difference Result 173 states and 217 transitions. [2020-10-27 04:15:40,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 04:15:40,869 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 199 [2020-10-27 04:15:40,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:40,870 INFO L225 Difference]: With dead ends: 173 [2020-10-27 04:15:40,870 INFO L226 Difference]: Without dead ends: 109 [2020-10-27 04:15:40,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=611, Invalid=1939, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 04:15:40,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-27 04:15:40,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-10-27 04:15:40,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-27 04:15:40,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 126 transitions. [2020-10-27 04:15:40,881 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 126 transitions. Word has length 199 [2020-10-27 04:15:40,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:40,881 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 126 transitions. [2020-10-27 04:15:40,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-27 04:15:40,882 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 126 transitions. [2020-10-27 04:15:40,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-27 04:15:40,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:40,883 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 16, 16, 3, 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] [2020-10-27 04:15:40,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:15:40,883 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:40,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:40,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1355701937, now seen corresponding path program 16 times [2020-10-27 04:15:40,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:40,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824223073] [2020-10-27 04:15:40,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:40,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:41,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:41,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:41,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:46,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:46,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 04:15:46,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:46,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-27 04:15:46,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:46,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:15:46,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:46,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:15:46,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:46,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:46,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:46,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:46,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:46,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:46,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:46,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:46,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:46,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:46,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:46,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:46,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:15:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:46,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:46,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:47,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:47,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:15:47,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:47,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-10-27 04:15:47,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:47,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:15:47,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:47,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:15:47,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:47,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:15:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:47,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:47,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:48,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:48,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:15:48,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:48,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-27 04:15:48,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:15:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:15:48,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:48,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-27 04:15:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:48,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:48,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:49,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:49,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:15:49,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:49,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-10-27 04:15:49,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:49,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:15:49,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:49,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:15:49,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:49,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3799 backedges. 1128 proven. 2512 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-27 04:15:49,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824223073] [2020-10-27 04:15:49,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:49,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-27 04:15:49,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993643293] [2020-10-27 04:15:49,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-27 04:15:49,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:49,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-27 04:15:49,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 04:15:49,182 INFO L87 Difference]: Start difference. First operand 106 states and 126 transitions. Second operand 37 states. [2020-10-27 04:15:50,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:50,569 INFO L93 Difference]: Finished difference Result 181 states and 227 transitions. [2020-10-27 04:15:50,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 04:15:50,569 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 210 [2020-10-27 04:15:50,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:50,571 INFO L225 Difference]: With dead ends: 181 [2020-10-27 04:15:50,571 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 04:15:50,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=683, Invalid=2179, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 04:15:50,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 04:15:50,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2020-10-27 04:15:50,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-27 04:15:50,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 132 transitions. [2020-10-27 04:15:50,582 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 132 transitions. Word has length 210 [2020-10-27 04:15:50,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:50,583 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 132 transitions. [2020-10-27 04:15:50,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-27 04:15:50,583 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 132 transitions. [2020-10-27 04:15:50,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-27 04:15:50,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:50,586 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 17, 17, 3, 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] [2020-10-27 04:15:50,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 04:15:50,587 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:50,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:50,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1842885152, now seen corresponding path program 17 times [2020-10-27 04:15:50,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:50,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025123833] [2020-10-27 04:15:50,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:50,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:50,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:50,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:50,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:55,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:55,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-27 04:15:55,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:55,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:15:55,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:55,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:15:55,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:55,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:15:55,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:55,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:55,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:55,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:55,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:55,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:55,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:55,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:55,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:55,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:55,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:55,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:55,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:15:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:56,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:56,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:56,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:56,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 04:15:56,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:56,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 614 [2020-10-27 04:15:56,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:56,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:15:56,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:56,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 04:15:56,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:57,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 04:15:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:57,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:57,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:57,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:57,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 04:15:57,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:57,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-27 04:15:57,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:57,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:15:57,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:57,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 04:15:57,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:57,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-27 04:15:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:57,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:57,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:58,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:58,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 04:15:58,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:58,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 639 [2020-10-27 04:15:58,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:15:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 04:15:58,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4282 backedges. 1275 proven. 2839 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-27 04:15:58,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025123833] [2020-10-27 04:15:58,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:58,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-27 04:15:58,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703446767] [2020-10-27 04:15:58,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-27 04:15:58,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:58,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-27 04:15:58,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 04:15:58,463 INFO L87 Difference]: Start difference. First operand 111 states and 132 transitions. Second operand 39 states. [2020-10-27 04:15:59,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:59,996 INFO L93 Difference]: Finished difference Result 189 states and 237 transitions. [2020-10-27 04:15:59,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 04:15:59,997 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 221 [2020-10-27 04:15:59,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:59,998 INFO L225 Difference]: With dead ends: 189 [2020-10-27 04:15:59,998 INFO L226 Difference]: Without dead ends: 119 [2020-10-27 04:16:00,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=759, Invalid=2433, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 04:16:00,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-27 04:16:00,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2020-10-27 04:16:00,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 04:16:00,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 138 transitions. [2020-10-27 04:16:00,009 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 138 transitions. Word has length 221 [2020-10-27 04:16:00,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:00,009 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 138 transitions. [2020-10-27 04:16:00,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-27 04:16:00,009 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 138 transitions. [2020-10-27 04:16:00,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-27 04:16:00,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:00,011 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 18, 18, 3, 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] [2020-10-27 04:16:00,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 04:16:00,012 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:00,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:00,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1686934933, now seen corresponding path program 18 times [2020-10-27 04:16:00,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:00,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566673481] [2020-10-27 04:16:00,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:00,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:00,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:00,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:00,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:05,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:05,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-27 04:16:05,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:05,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 04:16:05,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:05,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:16:05,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:05,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:16:05,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:05,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:05,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:05,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:05,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:05,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:05,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:16:05,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:05,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:05,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:16:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:05,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:05,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:06,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:06,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:16:06,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:06,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-10-27 04:16:06,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:06,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:16:06,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:06,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:16:06,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:06,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-27 04:16:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:06,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:06,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:07,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:07,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:16:07,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:07,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 756 [2020-10-27 04:16:07,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:07,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:16:07,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:07,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:16:07,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:07,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-27 04:16:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:07,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:07,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:08,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:08,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:16:08,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:08,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-10-27 04:16:08,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:08,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:16:08,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:08,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:16:08,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:08,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4794 backedges. 1431 proven. 3186 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-27 04:16:08,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566673481] [2020-10-27 04:16:08,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:08,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-27 04:16:08,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149608199] [2020-10-27 04:16:08,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-27 04:16:08,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:08,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-27 04:16:08,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=1219, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 04:16:08,230 INFO L87 Difference]: Start difference. First operand 116 states and 138 transitions. Second operand 41 states. [2020-10-27 04:16:09,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:09,988 INFO L93 Difference]: Finished difference Result 197 states and 247 transitions. [2020-10-27 04:16:09,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 04:16:09,989 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 232 [2020-10-27 04:16:09,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:09,990 INFO L225 Difference]: With dead ends: 197 [2020-10-27 04:16:09,990 INFO L226 Difference]: Without dead ends: 124 [2020-10-27 04:16:09,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=839, Invalid=2701, Unknown=0, NotChecked=0, Total=3540 [2020-10-27 04:16:09,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-27 04:16:10,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2020-10-27 04:16:10,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-27 04:16:10,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 144 transitions. [2020-10-27 04:16:10,002 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 144 transitions. Word has length 232 [2020-10-27 04:16:10,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:10,002 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 144 transitions. [2020-10-27 04:16:10,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-27 04:16:10,003 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 144 transitions. [2020-10-27 04:16:10,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-27 04:16:10,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:10,004 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 19, 19, 3, 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] [2020-10-27 04:16:10,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 04:16:10,005 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:10,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:10,005 INFO L82 PathProgramCache]: Analyzing trace with hash -710469060, now seen corresponding path program 19 times [2020-10-27 04:16:10,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:10,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182810008] [2020-10-27 04:16:10,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:10,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:10,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:10,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:10,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:15,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:15,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-27 04:16:15,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:15,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-27 04:16:15,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:15,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:16:15,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:15,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:16:15,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:15,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:15,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:15,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:15,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:15,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:15,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:15,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:15,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:15,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:15,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:15,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:15,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:16:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:15,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:15,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:16,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:16,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 04:16:16,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:16,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 727 [2020-10-27 04:16:16,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:16:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 04:16:16,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:16,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 04:16:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:16,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:16,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:17,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:17,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 04:16:17,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:17,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 780 [2020-10-27 04:16:17,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:17,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:16:17,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:17,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 04:16:17,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:17,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-27 04:16:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:17,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:17,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:18,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:18,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 04:16:18,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:18,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1098 [2020-10-27 04:16:18,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:18,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:16:18,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:18,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 04:16:18,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 5335 backedges. 1596 proven. 3553 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-10-27 04:16:18,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182810008] [2020-10-27 04:16:18,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:18,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-27 04:16:18,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839488993] [2020-10-27 04:16:18,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-27 04:16:18,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:18,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-27 04:16:18,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1343, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 04:16:18,883 INFO L87 Difference]: Start difference. First operand 121 states and 144 transitions. Second operand 43 states. [2020-10-27 04:16:20,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:20,523 INFO L93 Difference]: Finished difference Result 205 states and 257 transitions. [2020-10-27 04:16:20,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-27 04:16:20,524 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 243 [2020-10-27 04:16:20,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:20,525 INFO L225 Difference]: With dead ends: 205 [2020-10-27 04:16:20,526 INFO L226 Difference]: Without dead ends: 129 [2020-10-27 04:16:20,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=923, Invalid=2983, Unknown=0, NotChecked=0, Total=3906 [2020-10-27 04:16:20,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-27 04:16:20,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126. [2020-10-27 04:16:20,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-27 04:16:20,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 150 transitions. [2020-10-27 04:16:20,536 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 150 transitions. Word has length 243 [2020-10-27 04:16:20,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:20,536 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 150 transitions. [2020-10-27 04:16:20,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-27 04:16:20,536 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 150 transitions. [2020-10-27 04:16:20,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-27 04:16:20,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:20,538 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 20, 20, 3, 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] [2020-10-27 04:16:20,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 04:16:20,538 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:20,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:20,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1673146489, now seen corresponding path program 20 times [2020-10-27 04:16:20,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:20,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102384398] [2020-10-27 04:16:20,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:20,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:20,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:20,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:20,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:25,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:25,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-27 04:16:25,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:25,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-27 04:16:25,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:25,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:16:25,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:25,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:16:25,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:26,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:26,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:26,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:26,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:26,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:26,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:26,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:26,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:26,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:16:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:26,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:26,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:26,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:26,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:16:26,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:26,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 866 [2020-10-27 04:16:26,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:26,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:16:26,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:26,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 04:16:26,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:27,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-27 04:16:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:27,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:27,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:28,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:28,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:16:28,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:28,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 965 [2020-10-27 04:16:28,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:16:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 04:16:28,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:28,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-27 04:16:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:28,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:28,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:29,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:29,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 04:16:29,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:29,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-10-27 04:16:29,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:29,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:16:29,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:29,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 04:16:29,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:29,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5905 backedges. 1770 proven. 3940 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-27 04:16:29,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102384398] [2020-10-27 04:16:29,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:29,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-27 04:16:29,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401520563] [2020-10-27 04:16:29,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-27 04:16:29,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:29,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-27 04:16:29,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 04:16:29,626 INFO L87 Difference]: Start difference. First operand 126 states and 150 transitions. Second operand 45 states. [2020-10-27 04:16:31,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:31,560 INFO L93 Difference]: Finished difference Result 213 states and 267 transitions. [2020-10-27 04:16:31,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-27 04:16:31,564 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 254 [2020-10-27 04:16:31,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:31,566 INFO L225 Difference]: With dead ends: 213 [2020-10-27 04:16:31,566 INFO L226 Difference]: Without dead ends: 134 [2020-10-27 04:16:31,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1011, Invalid=3279, Unknown=0, NotChecked=0, Total=4290 [2020-10-27 04:16:31,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-27 04:16:31,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2020-10-27 04:16:31,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-27 04:16:31,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions. [2020-10-27 04:16:31,580 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 254 [2020-10-27 04:16:31,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:31,581 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 156 transitions. [2020-10-27 04:16:31,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-27 04:16:31,581 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions. [2020-10-27 04:16:31,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-27 04:16:31,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:31,583 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 21, 21, 3, 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] [2020-10-27 04:16:31,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 04:16:31,584 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:31,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:31,584 INFO L82 PathProgramCache]: Analyzing trace with hash 962362968, now seen corresponding path program 21 times [2020-10-27 04:16:31,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:31,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545931190] [2020-10-27 04:16:31,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:31,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:31,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:31,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:31,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:36,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:36,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-27 04:16:36,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:36,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-27 04:16:36,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:36,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:16:36,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:36,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:16:36,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:37,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:37,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:37,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:37,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:37,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:37,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:16:37,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:37,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:37,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:37,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:37,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:37,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 04:16:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:37,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:37,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:38,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:38,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 04:16:38,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:38,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 975 [2020-10-27 04:16:38,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:38,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:16:38,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:38,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 04:16:38,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:38,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 04:16:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:38,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:39,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:40,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:40,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 04:16:40,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:40,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1061 [2020-10-27 04:16:40,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:40,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:16:40,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:40,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 04:16:40,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:40,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-27 04:16:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:40,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:40,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:41,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:41,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 04:16:41,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:41,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 998 [2020-10-27 04:16:41,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:41,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:16:41,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:41,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 04:16:41,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6504 backedges. 1953 proven. 4347 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2020-10-27 04:16:41,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545931190] [2020-10-27 04:16:41,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:41,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-27 04:16:41,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361984868] [2020-10-27 04:16:41,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-27 04:16:41,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:41,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-27 04:16:41,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=1609, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 04:16:41,164 INFO L87 Difference]: Start difference. First operand 131 states and 156 transitions. Second operand 47 states. [2020-10-27 04:16:43,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:43,214 INFO L93 Difference]: Finished difference Result 221 states and 277 transitions. [2020-10-27 04:16:43,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-27 04:16:43,214 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 265 [2020-10-27 04:16:43,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:43,216 INFO L225 Difference]: With dead ends: 221 [2020-10-27 04:16:43,216 INFO L226 Difference]: Without dead ends: 139 [2020-10-27 04:16:43,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1103, Invalid=3589, Unknown=0, NotChecked=0, Total=4692 [2020-10-27 04:16:43,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-27 04:16:43,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 136. [2020-10-27 04:16:43,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-27 04:16:43,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 162 transitions. [2020-10-27 04:16:43,226 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 162 transitions. Word has length 265 [2020-10-27 04:16:43,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:43,226 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 162 transitions. [2020-10-27 04:16:43,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-27 04:16:43,227 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 162 transitions. [2020-10-27 04:16:43,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-27 04:16:43,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:43,229 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 66, 22, 22, 3, 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] [2020-10-27 04:16:43,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 04:16:43,229 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:43,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:43,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1484755107, now seen corresponding path program 22 times [2020-10-27 04:16:43,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:43,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848134224] [2020-10-27 04:16:43,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:43,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:43,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:43,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:43,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:48,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:48,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-27 04:16:48,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:48,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5118 [2020-10-27 04:16:48,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:48,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:16:48,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:48,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:16:48,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:48,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:48,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:48,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:48,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:48,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:48,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:48,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:48,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:48,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:16:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:48,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:48,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:49,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:49,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 04:16:49,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:49,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1091 [2020-10-27 04:16:49,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:49,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:16:49,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:49,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 04:16:49,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:50,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 04:16:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:50,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:50,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:51,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:51,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 04:16:51,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:51,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1083 [2020-10-27 04:16:51,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:16:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 04:16:51,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:51,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-27 04:16:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:52,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:52,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:53,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:53,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 04:16:53,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:53,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1081 [2020-10-27 04:16:53,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:16:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 04:16:53,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 7132 backedges. 2145 proven. 4774 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-27 04:16:53,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848134224] [2020-10-27 04:16:53,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:53,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-27 04:16:53,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887548802] [2020-10-27 04:16:53,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-27 04:16:53,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:53,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-27 04:16:53,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=1751, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 04:16:53,214 INFO L87 Difference]: Start difference. First operand 136 states and 162 transitions. Second operand 49 states. [2020-10-27 04:16:55,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:55,432 INFO L93 Difference]: Finished difference Result 229 states and 287 transitions. [2020-10-27 04:16:55,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-27 04:16:55,432 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 276 [2020-10-27 04:16:55,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:55,434 INFO L225 Difference]: With dead ends: 229 [2020-10-27 04:16:55,434 INFO L226 Difference]: Without dead ends: 144 [2020-10-27 04:16:55,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1199, Invalid=3913, Unknown=0, NotChecked=0, Total=5112 [2020-10-27 04:16:55,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-27 04:16:55,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2020-10-27 04:16:55,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-27 04:16:55,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 168 transitions. [2020-10-27 04:16:55,452 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 168 transitions. Word has length 276 [2020-10-27 04:16:55,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:55,453 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 168 transitions. [2020-10-27 04:16:55,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-27 04:16:55,453 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 168 transitions. [2020-10-27 04:16:55,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-27 04:16:55,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:55,455 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 69, 23, 23, 3, 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] [2020-10-27 04:16:55,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 04:16:55,457 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:55,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:55,458 INFO L82 PathProgramCache]: Analyzing trace with hash -552657292, now seen corresponding path program 23 times [2020-10-27 04:16:55,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:55,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380139382] [2020-10-27 04:16:55,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:55,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:55,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:55,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:55,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:00,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:00,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-27 04:17:00,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:17:00,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5134 [2020-10-27 04:17:00,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:00,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:17:00,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:17:00,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:17:00,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:01,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:01,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:01,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:01,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:01,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:01,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:17:01,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:01,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:01,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:01,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:01,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:01,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:17:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:01,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:01,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:02,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:02,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 04:17:02,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:02,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1284 [2020-10-27 04:17:02,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:02,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:17:02,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:02,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:17:02,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:03,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-27 04:17:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:03,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:03,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:04,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:04,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 04:17:04,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:04,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1210 [2020-10-27 04:17:04,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:04,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:17:04,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:04,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:17:04,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:04,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-27 04:17:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:04,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:04,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:06,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:06,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 04:17:06,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:06,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1284 [2020-10-27 04:17:06,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:06,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:17:06,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:06,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:17:06,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:06,170 INFO L134 CoverageAnalysis]: Checked inductivity of 7789 backedges. 2346 proven. 5221 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-27 04:17:06,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380139382] [2020-10-27 04:17:06,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:17:06,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-27 04:17:06,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376566442] [2020-10-27 04:17:06,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-27 04:17:06,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:06,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-27 04:17:06,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=1899, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 04:17:06,173 INFO L87 Difference]: Start difference. First operand 141 states and 168 transitions. Second operand 51 states. [2020-10-27 04:17:08,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:08,687 INFO L93 Difference]: Finished difference Result 237 states and 297 transitions. [2020-10-27 04:17:08,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-27 04:17:08,688 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 287 [2020-10-27 04:17:08,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:08,690 INFO L225 Difference]: With dead ends: 237 [2020-10-27 04:17:08,690 INFO L226 Difference]: Without dead ends: 149 [2020-10-27 04:17:08,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1299, Invalid=4251, Unknown=0, NotChecked=0, Total=5550 [2020-10-27 04:17:08,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-27 04:17:08,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2020-10-27 04:17:08,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-27 04:17:08,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 174 transitions. [2020-10-27 04:17:08,700 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 174 transitions. Word has length 287 [2020-10-27 04:17:08,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:08,701 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 174 transitions. [2020-10-27 04:17:08,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-27 04:17:08,701 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 174 transitions. [2020-10-27 04:17:08,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-27 04:17:08,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:08,703 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 72, 24, 24, 3, 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] [2020-10-27 04:17:08,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 04:17:08,704 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:08,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:08,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1542942143, now seen corresponding path program 24 times [2020-10-27 04:17:08,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:08,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867487384] [2020-10-27 04:17:08,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:08,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:08,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:08,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:09,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:13,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:13,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-27 04:17:13,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:17:13,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-27 04:17:13,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:13,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:17:13,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:17:13,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:17:13,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:14,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:14,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:14,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:14,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:14,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:14,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:17:14,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:14,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:14,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:14,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:14,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:14,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:17:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:14,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:14,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:15,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:15,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 04:17:15,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:15,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1349 [2020-10-27 04:17:15,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:15,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:17:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 04:17:15,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:16,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-27 04:17:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:16,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:16,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:18,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:18,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 04:17:18,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:18,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1424 [2020-10-27 04:17:18,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:18,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:17:18,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:18,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 04:17:18,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:18,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-27 04:17:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:18,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:18,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:19,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:19,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 04:17:19,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:19,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1564 [2020-10-27 04:17:19,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:19,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:17:19,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:19,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 04:17:19,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 8475 backedges. 2556 proven. 5688 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-27 04:17:19,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867487384] [2020-10-27 04:17:19,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:17:19,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-27 04:17:19,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141416989] [2020-10-27 04:17:19,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-27 04:17:19,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:19,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-27 04:17:19,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=2053, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 04:17:19,927 INFO L87 Difference]: Start difference. First operand 146 states and 174 transitions. Second operand 53 states. [2020-10-27 04:17:22,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:22,426 INFO L93 Difference]: Finished difference Result 245 states and 307 transitions. [2020-10-27 04:17:22,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-27 04:17:22,427 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 298 [2020-10-27 04:17:22,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:22,429 INFO L225 Difference]: With dead ends: 245 [2020-10-27 04:17:22,430 INFO L226 Difference]: Without dead ends: 154 [2020-10-27 04:17:22,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1403, Invalid=4603, Unknown=0, NotChecked=0, Total=6006 [2020-10-27 04:17:22,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-27 04:17:22,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 151. [2020-10-27 04:17:22,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-27 04:17:22,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 180 transitions. [2020-10-27 04:17:22,441 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 180 transitions. Word has length 298 [2020-10-27 04:17:22,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:22,441 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 180 transitions. [2020-10-27 04:17:22,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-27 04:17:22,442 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 180 transitions. [2020-10-27 04:17:22,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-27 04:17:22,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:22,444 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 75, 25, 25, 3, 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] [2020-10-27 04:17:22,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 04:17:22,444 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:22,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:22,445 INFO L82 PathProgramCache]: Analyzing trace with hash -271205744, now seen corresponding path program 25 times [2020-10-27 04:17:22,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:22,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831012577] [2020-10-27 04:17:22,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:22,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:22,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:22,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:22,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:27,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:27,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-27 04:17:27,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:17:27,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-27 04:17:27,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:27,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:17:27,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:17:27,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 04:17:27,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:28,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:28,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:28,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:28,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:28,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:28,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:17:28,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:28,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:28,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:28,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:28,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:28,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 04:17:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:28,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:28,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking...