/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:00:59,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:00:59,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:00:59,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:00:59,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:00:59,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:00:59,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:00:59,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:00:59,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:00:59,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:00:59,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:00:59,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:00:59,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:00:59,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:00:59,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:00:59,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:00:59,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:00:59,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:00:59,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:00:59,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:00:59,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:00:59,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:00:59,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:00:59,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:00:59,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:00:59,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:00:59,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:00:59,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:00:59,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:00:59,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:00:59,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:00:59,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:00:59,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:00:59,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:00:59,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:00:59,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:00:59,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:00:59,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:00:59,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:00:59,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:00:59,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:00:59,280 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 [2020-10-29 05:00:59,310 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:00:59,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:00:59,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:00:59,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:00:59,313 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:00:59,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:00:59,313 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:00:59,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:00:59,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:00:59,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:00:59,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:00:59,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:00:59,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:00:59,315 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:00:59,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:00:59,315 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:00:59,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:00:59,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:00:59,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:00:59,316 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:00:59,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:00:59,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:00:59,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:00:59,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:00:59,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:00:59,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:00:59,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:00:59,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:00:59,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:00:59,318 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:00:59,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:00:59,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:00:59,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:00:59,820 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:00:59,821 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:00:59,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label53.c [2020-10-29 05:00:59,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b7c8c4da/c2f9dccd1f47403cbd1c9e2d5bcd676d/FLAG9c2c03302 [2020-10-29 05:01:00,889 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:01:00,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label53.c [2020-10-29 05:01:00,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b7c8c4da/c2f9dccd1f47403cbd1c9e2d5bcd676d/FLAG9c2c03302 [2020-10-29 05:01:00,967 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b7c8c4da/c2f9dccd1f47403cbd1c9e2d5bcd676d [2020-10-29 05:01:00,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:01:00,994 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:01:00,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:01:00,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:01:01,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:01:01,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:01:00" (1/1) ... [2020-10-29 05:01:01,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522b80ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:01, skipping insertion in model container [2020-10-29 05:01:01,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:01:00" (1/1) ... [2020-10-29 05:01:01,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:01:01,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:01:01,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:01:01,950 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:01:02,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:01:02,157 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:01:02,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:02 WrapperNode [2020-10-29 05:01:02,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:01:02,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:01:02,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:01:02,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:01:02,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:02" (1/1) ... [2020-10-29 05:01:02,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:02" (1/1) ... [2020-10-29 05:01:02,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:02" (1/1) ... [2020-10-29 05:01:02,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:02" (1/1) ... [2020-10-29 05:01:02,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:02" (1/1) ... [2020-10-29 05:01:02,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:02" (1/1) ... [2020-10-29 05:01:02,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:02" (1/1) ... [2020-10-29 05:01:02,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:01:02,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:01:02,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:01:02,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:01:02,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:02" (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 [2020-10-29 05:01:02,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:01:02,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:01:02,527 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:01:02,527 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:01:02,527 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:01:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:01:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:01:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:01:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:01:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:01:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:01:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:01:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:01:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:01:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:01:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:01:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:01:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:01:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:01:04,857 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:01:04,857 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:01:04,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:01:04 BoogieIcfgContainer [2020-10-29 05:01:04,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:01:04,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:01:04,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:01:04,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:01:04,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:01:00" (1/3) ... [2020-10-29 05:01:04,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c424dc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:01:04, skipping insertion in model container [2020-10-29 05:01:04,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:02" (2/3) ... [2020-10-29 05:01:04,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c424dc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:01:04, skipping insertion in model container [2020-10-29 05:01:04,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:01:04" (3/3) ... [2020-10-29 05:01:04,869 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label53.c [2020-10-29 05:01:04,881 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:01:04,888 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:01:04,902 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:01:04,933 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:01:04,933 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:01:04,933 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:01:04,933 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:01:04,933 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:01:04,933 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:01:04,934 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:01:04,934 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:01:04,959 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 05:01:04,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-29 05:01:04,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:04,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:04,979 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:04,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:04,986 INFO L82 PathProgramCache]: Analyzing trace with hash -853966388, now seen corresponding path program 1 times [2020-10-29 05:01:04,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:04,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375665524] [2020-10-29 05:01:04,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:05,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:06,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:09,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:09,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-29 05:01:09,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:01:09,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4279 [2020-10-29 05:01:09,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:09,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:09,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:01:09,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:01:09,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-29 05:01:09,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:01:10,195 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:10,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:10,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:10,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:10,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:10,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:10,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 05:01:10,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:10,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:10,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:10,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:10,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:01:10,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:10,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:01:10,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375665524] [2020-10-29 05:01:10,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:01:10,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:01:10,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118335442] [2020-10-29 05:01:10,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:01:10,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:10,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:01:10,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:01:10,387 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 05:01:10,639 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:13,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:13,917 INFO L93 Difference]: Finished difference Result 891 states and 1544 transitions. [2020-10-29 05:01:13,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:01:13,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2020-10-29 05:01:13,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:13,948 INFO L225 Difference]: With dead ends: 891 [2020-10-29 05:01:13,948 INFO L226 Difference]: Without dead ends: 483 [2020-10-29 05:01:13,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:13,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-10-29 05:01:14,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 477. [2020-10-29 05:01:14,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-10-29 05:01:14,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 725 transitions. [2020-10-29 05:01:14,094 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 725 transitions. Word has length 201 [2020-10-29 05:01:14,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:14,095 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 725 transitions. [2020-10-29 05:01:14,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:01:14,095 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 725 transitions. [2020-10-29 05:01:14,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-29 05:01:14,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:14,102 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:14,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:01:14,103 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:14,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:14,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1917081011, now seen corresponding path program 1 times [2020-10-29 05:01:14,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:14,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062998976] [2020-10-29 05:01:14,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:14,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:14,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:16,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:18,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:18,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 05:01:18,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:01:18,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4091 [2020-10-29 05:01:18,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:18,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 05:01:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-29 05:01:18,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:18,762 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:18,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:18,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:18,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:18,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:18,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:18,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:01:18,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:18,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:18,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:18,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:18,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:18,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:01:18,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:18,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:18,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:18,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:01:18,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:18,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 05:01:18,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:18,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:18,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:18,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:18,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 05:01:18,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:01:19,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062998976] [2020-10-29 05:01:19,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:19,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:01:19,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889754763] [2020-10-29 05:01:19,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:01:19,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:19,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:01:19,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:19,127 INFO L87 Difference]: Start difference. First operand 477 states and 725 transitions. Second operand 5 states. [2020-10-29 05:01:19,515 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:22,964 INFO L93 Difference]: Finished difference Result 1381 states and 2130 transitions. [2020-10-29 05:01:22,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:01:22,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-29 05:01:22,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:22,980 INFO L225 Difference]: With dead ends: 1381 [2020-10-29 05:01:22,981 INFO L226 Difference]: Without dead ends: 910 [2020-10-29 05:01:22,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:22,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2020-10-29 05:01:23,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 900. [2020-10-29 05:01:23,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 900 states. [2020-10-29 05:01:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1312 transitions. [2020-10-29 05:01:23,069 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1312 transitions. Word has length 213 [2020-10-29 05:01:23,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:23,070 INFO L481 AbstractCegarLoop]: Abstraction has 900 states and 1312 transitions. [2020-10-29 05:01:23,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:01:23,071 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1312 transitions. [2020-10-29 05:01:23,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-29 05:01:23,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:23,079 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:23,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:01:23,079 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:23,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:23,080 INFO L82 PathProgramCache]: Analyzing trace with hash 20364259, now seen corresponding path program 1 times [2020-10-29 05:01:23,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:23,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433296198] [2020-10-29 05:01:23,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:23,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:23,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:24,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:25,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:28,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:28,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-29 05:01:28,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:01:28,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-29 05:01:28,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:28,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:01:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 05:01:28,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:28,623 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:28,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:28,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:28,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:28,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:28,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:28,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:01:28,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:28,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:28,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:28,784 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 05:01:28,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:28,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:28,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:28,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:01:28,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:28,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:01:28,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:28,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:28,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:28,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:28,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:28,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:28,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:01:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:28,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:28,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:28,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 05:01:28,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:28,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 05:01:28,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:28,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:28,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:28,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:28,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:01:28,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:28,940 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:01:28,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433296198] [2020-10-29 05:01:28,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:28,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:01:28,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491909952] [2020-10-29 05:01:28,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:01:28,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:28,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:01:28,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:28,943 INFO L87 Difference]: Start difference. First operand 900 states and 1312 transitions. Second operand 5 states. [2020-10-29 05:01:29,333 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:32,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:32,988 INFO L93 Difference]: Finished difference Result 2638 states and 3912 transitions. [2020-10-29 05:01:32,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:01:32,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-29 05:01:32,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:33,002 INFO L225 Difference]: With dead ends: 2638 [2020-10-29 05:01:33,002 INFO L226 Difference]: Without dead ends: 1744 [2020-10-29 05:01:33,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:33,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2020-10-29 05:01:33,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1738. [2020-10-29 05:01:33,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2020-10-29 05:01:33,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2505 transitions. [2020-10-29 05:01:33,091 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2505 transitions. Word has length 223 [2020-10-29 05:01:33,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:33,092 INFO L481 AbstractCegarLoop]: Abstraction has 1738 states and 2505 transitions. [2020-10-29 05:01:33,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:01:33,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2505 transitions. [2020-10-29 05:01:33,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-29 05:01:33,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:33,101 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:33,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:01:33,101 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:33,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:33,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1348361791, now seen corresponding path program 1 times [2020-10-29 05:01:33,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:33,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148890119] [2020-10-29 05:01:33,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:33,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:33,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:35,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:35,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 05:01:35,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:01:35,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2267 [2020-10-29 05:01:35,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:35,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:35,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:35,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 05:01:35,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-29 05:01:35,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:35,829 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:35,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:35,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:35,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:35,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:35,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:35,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:01:35,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:35,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:35,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:35,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:35,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:36,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:36,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:01:36,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:36,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 05:01:36,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:36,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 05:01:36,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:36,132 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:01:36,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148890119] [2020-10-29 05:01:36,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:36,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:01:36,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494792720] [2020-10-29 05:01:36,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:01:36,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:36,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:01:36,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:36,135 INFO L87 Difference]: Start difference. First operand 1738 states and 2505 transitions. Second operand 5 states. [2020-10-29 05:01:36,520 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:39,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:39,895 INFO L93 Difference]: Finished difference Result 5152 states and 7600 transitions. [2020-10-29 05:01:39,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:01:39,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2020-10-29 05:01:39,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:39,933 INFO L225 Difference]: With dead ends: 5152 [2020-10-29 05:01:39,933 INFO L226 Difference]: Without dead ends: 3420 [2020-10-29 05:01:39,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:39,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3420 states. [2020-10-29 05:01:40,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3420 to 3415. [2020-10-29 05:01:40,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3415 states. [2020-10-29 05:01:40,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3415 states to 3415 states and 4732 transitions. [2020-10-29 05:01:40,127 INFO L78 Accepts]: Start accepts. Automaton has 3415 states and 4732 transitions. Word has length 228 [2020-10-29 05:01:40,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:40,128 INFO L481 AbstractCegarLoop]: Abstraction has 3415 states and 4732 transitions. [2020-10-29 05:01:40,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:01:40,129 INFO L276 IsEmpty]: Start isEmpty. Operand 3415 states and 4732 transitions. [2020-10-29 05:01:40,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-29 05:01:40,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:40,144 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:40,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:01:40,145 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:40,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:40,146 INFO L82 PathProgramCache]: Analyzing trace with hash -742361508, now seen corresponding path program 1 times [2020-10-29 05:01:40,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:40,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023410812] [2020-10-29 05:01:40,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:40,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:40,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:42,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:42,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-29 05:01:42,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:01:42,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2373 [2020-10-29 05:01:42,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:42,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:42,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 05:01:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-29 05:01:42,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:42,933 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:42,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:42,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:42,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:42,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:42,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:42,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:01:42,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:42,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:42,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:42,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:42,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:42,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:43,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:43,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:43,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:43,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 05:01:43,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:43,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 05:01:43,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:43,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 05:01:43,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:01:43,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023410812] [2020-10-29 05:01:43,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:43,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:01:43,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359034418] [2020-10-29 05:01:43,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:01:43,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:43,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:01:43,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:43,216 INFO L87 Difference]: Start difference. First operand 3415 states and 4732 transitions. Second operand 5 states. [2020-10-29 05:01:43,616 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:46,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:46,917 INFO L93 Difference]: Finished difference Result 8503 states and 12038 transitions. [2020-10-29 05:01:46,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:01:46,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 233 [2020-10-29 05:01:46,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:46,951 INFO L225 Difference]: With dead ends: 8503 [2020-10-29 05:01:46,951 INFO L226 Difference]: Without dead ends: 5094 [2020-10-29 05:01:46,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:46,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5094 states. [2020-10-29 05:01:47,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5094 to 5087. [2020-10-29 05:01:47,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5087 states. [2020-10-29 05:01:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5087 states to 5087 states and 6808 transitions. [2020-10-29 05:01:47,186 INFO L78 Accepts]: Start accepts. Automaton has 5087 states and 6808 transitions. Word has length 233 [2020-10-29 05:01:47,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:47,187 INFO L481 AbstractCegarLoop]: Abstraction has 5087 states and 6808 transitions. [2020-10-29 05:01:47,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:01:47,187 INFO L276 IsEmpty]: Start isEmpty. Operand 5087 states and 6808 transitions. [2020-10-29 05:01:47,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-29 05:01:47,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:47,208 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:47,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:01:47,209 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:47,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:47,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1533009216, now seen corresponding path program 1 times [2020-10-29 05:01:47,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:47,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159926643] [2020-10-29 05:01:47,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:47,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:47,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:49,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:49,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-29 05:01:49,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:01:49,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2068 [2020-10-29 05:01:49,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:49,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:49,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 05:01:49,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:01:49,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-29 05:01:49,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:49,691 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:49,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:49,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:49,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:49,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:49,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:49,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 05:01:49,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:49,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:49,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:49,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:49,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:01:49,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:49,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:49,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:49,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:49,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:01:49,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:49,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 05:01:49,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:49,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:49,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:49,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:49,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 05:01:49,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:50,185 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 05:01:50,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159926643] [2020-10-29 05:01:50,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:50,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:01:50,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952852749] [2020-10-29 05:01:50,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:01:50,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:50,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:01:50,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:50,189 INFO L87 Difference]: Start difference. First operand 5087 states and 6808 transitions. Second operand 6 states. [2020-10-29 05:01:50,460 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:54,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:54,012 INFO L93 Difference]: Finished difference Result 14600 states and 20065 transitions. [2020-10-29 05:01:54,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 05:01:54,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 235 [2020-10-29 05:01:54,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:54,071 INFO L225 Difference]: With dead ends: 14600 [2020-10-29 05:01:54,071 INFO L226 Difference]: Without dead ends: 9519 [2020-10-29 05:01:54,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:01:54,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9519 states. [2020-10-29 05:01:54,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9519 to 9496. [2020-10-29 05:01:54,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9496 states. [2020-10-29 05:01:54,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9496 states to 9496 states and 13009 transitions. [2020-10-29 05:01:54,439 INFO L78 Accepts]: Start accepts. Automaton has 9496 states and 13009 transitions. Word has length 235 [2020-10-29 05:01:54,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:54,440 INFO L481 AbstractCegarLoop]: Abstraction has 9496 states and 13009 transitions. [2020-10-29 05:01:54,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:01:54,440 INFO L276 IsEmpty]: Start isEmpty. Operand 9496 states and 13009 transitions. [2020-10-29 05:01:54,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-29 05:01:54,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:54,475 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:54,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:01:54,476 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:54,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:54,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1423771253, now seen corresponding path program 1 times [2020-10-29 05:01:54,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:54,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977195457] [2020-10-29 05:01:54,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:54,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:54,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:57,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:59,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:59,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-29 05:01:59,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:01:59,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 05:01:59,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:59,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:59,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 05:01:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-29 05:01:59,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:59,980 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:59,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:59,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:59,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:59,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:59,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:59,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:01:59,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:59,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:59,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:59,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:59,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:59,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:00,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:00,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:00,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:00,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:02:00,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:00,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:02:00,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:00,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:00,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:00,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:00,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 05:02:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:00,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:00,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:00,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:02:00,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:00,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:02:00,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:00,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:00,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:00,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 05:02:00,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:00,305 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 05:02:00,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977195457] [2020-10-29 05:02:00,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:00,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:02:00,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359267287] [2020-10-29 05:02:00,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:02:00,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:00,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:02:00,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:02:00,308 INFO L87 Difference]: Start difference. First operand 9496 states and 13009 transitions. Second operand 5 states. [2020-10-29 05:02:00,624 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:02:03,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:03,882 INFO L93 Difference]: Finished difference Result 22551 states and 31523 transitions. [2020-10-29 05:02:03,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:02:03,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2020-10-29 05:02:03,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:03,954 INFO L225 Difference]: With dead ends: 22551 [2020-10-29 05:02:03,954 INFO L226 Difference]: Without dead ends: 13061 [2020-10-29 05:02:03,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:02:04,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13061 states. [2020-10-29 05:02:04,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13061 to 13054. [2020-10-29 05:02:04,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13054 states. [2020-10-29 05:02:04,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13054 states to 13054 states and 17752 transitions. [2020-10-29 05:02:04,402 INFO L78 Accepts]: Start accepts. Automaton has 13054 states and 17752 transitions. Word has length 246 [2020-10-29 05:02:04,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:04,403 INFO L481 AbstractCegarLoop]: Abstraction has 13054 states and 17752 transitions. [2020-10-29 05:02:04,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:02:04,403 INFO L276 IsEmpty]: Start isEmpty. Operand 13054 states and 17752 transitions. [2020-10-29 05:02:04,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-29 05:02:04,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:04,448 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:04,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:02:04,448 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:04,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:04,449 INFO L82 PathProgramCache]: Analyzing trace with hash 2131031091, now seen corresponding path program 2 times [2020-10-29 05:02:04,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:04,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243787477] [2020-10-29 05:02:04,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:04,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:04,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:06,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:06,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:09,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:09,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-29 05:02:09,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:02:09,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 05:02:09,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:09,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:09,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:02:09,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 05:02:09,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-29 05:02:09,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:09,863 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:09,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:09,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:09,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:09,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:09,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:09,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:02:09,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:09,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:09,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:09,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:09,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:09,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:09,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:09,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:09,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:09,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:02:09,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:09,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:02:09,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:09,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 05:02:09,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:09,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 05:02:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:10,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:10,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:10,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:02:10,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:10,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 05:02:10,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:10,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 05:02:10,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:10,200 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:02:10,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243787477] [2020-10-29 05:02:10,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:10,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:02:10,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143762113] [2020-10-29 05:02:10,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:02:10,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:10,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:02:10,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:02:10,202 INFO L87 Difference]: Start difference. First operand 13054 states and 17752 transitions. Second operand 6 states. [2020-10-29 05:02:10,461 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:02:13,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:13,864 INFO L93 Difference]: Finished difference Result 35660 states and 49888 transitions. [2020-10-29 05:02:13,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:02:13,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 246 [2020-10-29 05:02:13,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:13,995 INFO L225 Difference]: With dead ends: 35660 [2020-10-29 05:02:13,995 INFO L226 Difference]: Without dead ends: 22612 [2020-10-29 05:02:14,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:02:14,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22612 states. [2020-10-29 05:02:14,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22612 to 21279. [2020-10-29 05:02:14,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21279 states. [2020-10-29 05:02:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21279 states to 21279 states and 29583 transitions. [2020-10-29 05:02:15,030 INFO L78 Accepts]: Start accepts. Automaton has 21279 states and 29583 transitions. Word has length 246 [2020-10-29 05:02:15,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:15,031 INFO L481 AbstractCegarLoop]: Abstraction has 21279 states and 29583 transitions. [2020-10-29 05:02:15,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:02:15,031 INFO L276 IsEmpty]: Start isEmpty. Operand 21279 states and 29583 transitions. [2020-10-29 05:02:15,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-29 05:02:15,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:15,118 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:15,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:02:15,119 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:15,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:15,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1862645675, now seen corresponding path program 1 times [2020-10-29 05:02:15,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:15,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451023310] [2020-10-29 05:02:15,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:15,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:15,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:17,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:18,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:18,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-29 05:02:18,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:02:18,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3747 [2020-10-29 05:02:18,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:18,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 05:02:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:02:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 05:02:18,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:19,227 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:19,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:19,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:19,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:19,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:19,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:19,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 05:02:19,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:19,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:19,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:19,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:19,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:02:19,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:19,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:19,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:19,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:19,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:02:19,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:19,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 05:02:19,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:19,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:19,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:19,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:19,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 05:02:19,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:19,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 05:02:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:19,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:19,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:19,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:02:19,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:19,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 05:02:19,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:19,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:19,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:19,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:19,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 05:02:19,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 52 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 05:02:19,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451023310] [2020-10-29 05:02:19,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:19,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:02:19,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100505325] [2020-10-29 05:02:19,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:02:19,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:19,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:02:19,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:02:19,943 INFO L87 Difference]: Start difference. First operand 21279 states and 29583 transitions. Second operand 8 states. [2020-10-29 05:02:20,203 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 05:02:24,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:24,823 INFO L93 Difference]: Finished difference Result 59647 states and 89879 transitions. [2020-10-29 05:02:24,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:02:24,824 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 258 [2020-10-29 05:02:24,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:25,083 INFO L225 Difference]: With dead ends: 59647 [2020-10-29 05:02:25,084 INFO L226 Difference]: Without dead ends: 38374 [2020-10-29 05:02:25,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:02:25,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38374 states. [2020-10-29 05:02:26,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38374 to 35463. [2020-10-29 05:02:26,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35463 states. [2020-10-29 05:02:26,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35463 states to 35463 states and 50320 transitions. [2020-10-29 05:02:26,538 INFO L78 Accepts]: Start accepts. Automaton has 35463 states and 50320 transitions. Word has length 258 [2020-10-29 05:02:26,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:26,539 INFO L481 AbstractCegarLoop]: Abstraction has 35463 states and 50320 transitions. [2020-10-29 05:02:26,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:02:26,539 INFO L276 IsEmpty]: Start isEmpty. Operand 35463 states and 50320 transitions. [2020-10-29 05:02:26,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-29 05:02:26,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:26,643 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:26,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 05:02:26,643 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:26,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:26,644 INFO L82 PathProgramCache]: Analyzing trace with hash -72648769, now seen corresponding path program 1 times [2020-10-29 05:02:26,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:26,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723114066] [2020-10-29 05:02:26,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:26,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:28,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:28,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-29 05:02:28,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:28,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1765 [2020-10-29 05:02:28,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:28,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:28,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:02:28,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:02:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 05:02:28,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:28,829 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:28,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:28,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:28,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:28,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:28,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:28,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:02:28,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:28,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:28,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:28,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:28,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:02:28,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:28,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:29,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:29,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:29,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 05:02:29,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:29,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 05:02:29,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:29,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:29,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:29,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:29,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 05:02:29,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:29,641 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:02:29,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723114066] [2020-10-29 05:02:29,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:02:29,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 05:02:29,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821776261] [2020-10-29 05:02:29,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:02:29,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:29,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:02:29,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:02:29,643 INFO L87 Difference]: Start difference. First operand 35463 states and 50320 transitions. Second operand 7 states. [2020-10-29 05:02:29,958 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 05:02:30,927 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 05:02:34,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:34,833 INFO L93 Difference]: Finished difference Result 76128 states and 116781 transitions. [2020-10-29 05:02:34,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:02:34,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 279 [2020-10-29 05:02:34,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:35,102 INFO L225 Difference]: With dead ends: 76128 [2020-10-29 05:02:35,103 INFO L226 Difference]: Without dead ends: 40671 [2020-10-29 05:02:35,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:02:35,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40671 states. [2020-10-29 05:02:37,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40671 to 39526. [2020-10-29 05:02:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39526 states. [2020-10-29 05:02:37,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39526 states to 39526 states and 55450 transitions. [2020-10-29 05:02:37,380 INFO L78 Accepts]: Start accepts. Automaton has 39526 states and 55450 transitions. Word has length 279 [2020-10-29 05:02:37,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:37,381 INFO L481 AbstractCegarLoop]: Abstraction has 39526 states and 55450 transitions. [2020-10-29 05:02:37,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:02:37,381 INFO L276 IsEmpty]: Start isEmpty. Operand 39526 states and 55450 transitions. [2020-10-29 05:02:37,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-29 05:02:37,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:37,462 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:37,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 05:02:37,463 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:37,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:37,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1998486443, now seen corresponding path program 1 times [2020-10-29 05:02:37,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:37,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437275758] [2020-10-29 05:02:37,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:37,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:37,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:37,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:38,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:38,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:40,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:42,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:42,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-29 05:02:42,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 05:02:42,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 05:02:42,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:42,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:02:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 05:02:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 05:02:42,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:42,975 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:42,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:42,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:42,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:42,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:42,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:42,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:02:42,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:42,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:42,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:42,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:42,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:42,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:43,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:43,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:43,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:43,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:02:43,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:43,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 05:02:43,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:43,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:43,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:43,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:43,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:02:43,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:43,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:02:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:43,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:43,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:43,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:02:43,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:43,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 05:02:43,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:43,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:43,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:43,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:43,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 05:02:43,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:43,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 05:02:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:43,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:43,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:43,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:02:43,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:43,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 05:02:43,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:43,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:43,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:43,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:43,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 05:02:43,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:43,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 05:02:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:43,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:43,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:43,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:02:43,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:43,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 05:02:43,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:43,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:43,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:43,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:02:43,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:43,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:43,687 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 136 proven. 47 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-29 05:02:43,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437275758] [2020-10-29 05:02:43,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:43,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:02:43,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624851458] [2020-10-29 05:02:43,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:02:43,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:43,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:02:43,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:02:43,689 INFO L87 Difference]: Start difference. First operand 39526 states and 55450 transitions. Second operand 7 states. [2020-10-29 05:02:44,049 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:02:44,432 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:02:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:49,596 INFO L93 Difference]: Finished difference Result 76346 states and 113850 transitions. [2020-10-29 05:02:49,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:02:49,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-10-29 05:02:49,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:49,902 INFO L225 Difference]: With dead ends: 76346 [2020-10-29 05:02:49,902 INFO L226 Difference]: Without dead ends: 37451 [2020-10-29 05:02:49,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:02:49,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37451 states. [2020-10-29 05:02:51,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37451 to 34216. [2020-10-29 05:02:51,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34216 states. [2020-10-29 05:02:51,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34216 states to 34216 states and 46738 transitions. [2020-10-29 05:02:51,187 INFO L78 Accepts]: Start accepts. Automaton has 34216 states and 46738 transitions. Word has length 307 [2020-10-29 05:02:51,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:51,188 INFO L481 AbstractCegarLoop]: Abstraction has 34216 states and 46738 transitions. [2020-10-29 05:02:51,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:02:51,188 INFO L276 IsEmpty]: Start isEmpty. Operand 34216 states and 46738 transitions. [2020-10-29 05:02:51,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-29 05:02:51,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:51,234 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:51,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 05:02:51,235 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:51,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:51,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1920207908, now seen corresponding path program 1 times [2020-10-29 05:02:51,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:51,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480051280] [2020-10-29 05:02:51,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:51,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:51,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:51,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:51,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:52,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:52,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:56,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:56,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-29 05:02:56,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 05:02:56,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-29 05:02:56,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:56,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:56,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:02:56,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-29 05:02:56,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 05:02:56,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:56,658 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:56,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:56,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:56,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:56,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:56,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:56,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:02:56,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:56,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:56,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:56,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:56,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:56,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:56,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:56,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:56,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:56,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:02:56,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:56,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 05:02:56,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:56,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:56,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:56,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:56,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:56,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:56,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:02:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:56,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:56,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:56,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:02:56,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:56,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 05:02:56,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:56,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:56,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:56,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:56,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:56,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:56,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 05:02:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:56,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:56,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:56,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:02:56,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:56,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 05:02:56,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:56,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 05:02:56,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:56,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 05:02:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:56,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:57,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:57,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:02:57,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:57,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 05:02:57,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:57,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:57,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 05:02:57,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:57,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 05:02:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:57,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:57,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:57,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:02:57,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:57,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 05:02:57,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:57,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:57,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:57,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:57,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 05:02:57,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:57,326 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 215 proven. 6 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-29 05:02:57,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480051280] [2020-10-29 05:02:57,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:57,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:02:57,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378417147] [2020-10-29 05:02:57,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:02:57,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:57,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:02:57,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:02:57,337 INFO L87 Difference]: Start difference. First operand 34216 states and 46738 transitions. Second operand 7 states. [2020-10-29 05:02:57,582 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:58,174 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:03:01,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:01,152 INFO L93 Difference]: Finished difference Result 64303 states and 90738 transitions. [2020-10-29 05:03:01,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:03:01,153 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2020-10-29 05:03:01,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:01,253 INFO L225 Difference]: With dead ends: 64303 [2020-10-29 05:03:01,254 INFO L226 Difference]: Without dead ends: 34079 [2020-10-29 05:03:01,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:03:01,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34079 states. [2020-10-29 05:03:02,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34079 to 31516. [2020-10-29 05:03:02,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31516 states. [2020-10-29 05:03:02,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31516 states to 31516 states and 41067 transitions. [2020-10-29 05:03:02,273 INFO L78 Accepts]: Start accepts. Automaton has 31516 states and 41067 transitions. Word has length 319 [2020-10-29 05:03:02,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:02,274 INFO L481 AbstractCegarLoop]: Abstraction has 31516 states and 41067 transitions. [2020-10-29 05:03:02,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:03:02,274 INFO L276 IsEmpty]: Start isEmpty. Operand 31516 states and 41067 transitions. [2020-10-29 05:03:02,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-29 05:03:02,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:02,337 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:03:02,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 05:03:02,338 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:02,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:02,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1114451963, now seen corresponding path program 1 times [2020-10-29 05:03:02,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:02,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736162803] [2020-10-29 05:03:02,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:02,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:03,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:06,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:06,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-29 05:03:06,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:03:06,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4017 [2020-10-29 05:03:06,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:06,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:06,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 05:03:06,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 05:03:06,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-29 05:03:06,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:06,844 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:03:06,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:03:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:06,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:06,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:06,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:03:06,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:06,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:03:06,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:06,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:06,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:06,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:06,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:06,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:06,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:03:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:06,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:07,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:07,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:03:07,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:07,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 05:03:07,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:07,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:07,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:03:07,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:07,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 05:03:07,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:07,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 05:03:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:07,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:07,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:07,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 05:03:07,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:07,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-29 05:03:07,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:07,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:07,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 05:03:07,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:03:07,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 05:03:07,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 68 proven. 79 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:03:07,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736162803] [2020-10-29 05:03:07,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:03:07,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:03:07,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655944270] [2020-10-29 05:03:07,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:03:07,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:03:07,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:03:07,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:03:07,600 INFO L87 Difference]: Start difference. First operand 31516 states and 41067 transitions. Second operand 8 states. [2020-10-29 05:03:07,898 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 05:03:08,744 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:03:10,204 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 05:03:10,624 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-29 05:03:16,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:16,617 INFO L93 Difference]: Finished difference Result 68357 states and 89852 transitions. [2020-10-29 05:03:16,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 05:03:16,618 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 317 [2020-10-29 05:03:16,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:16,713 INFO L225 Difference]: With dead ends: 68357 [2020-10-29 05:03:16,713 INFO L226 Difference]: Without dead ends: 45723 [2020-10-29 05:03:16,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-10-29 05:03:16,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45723 states. [2020-10-29 05:03:17,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45723 to 45609. [2020-10-29 05:03:17,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45609 states. [2020-10-29 05:03:17,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45609 states to 45609 states and 58851 transitions. [2020-10-29 05:03:17,755 INFO L78 Accepts]: Start accepts. Automaton has 45609 states and 58851 transitions. Word has length 317 [2020-10-29 05:03:17,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:17,756 INFO L481 AbstractCegarLoop]: Abstraction has 45609 states and 58851 transitions. [2020-10-29 05:03:17,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:03:17,756 INFO L276 IsEmpty]: Start isEmpty. Operand 45609 states and 58851 transitions. [2020-10-29 05:03:17,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-29 05:03:17,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:17,837 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:03:17,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 05:03:17,838 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:17,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:17,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1237436298, now seen corresponding path program 1 times [2020-10-29 05:03:17,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:17,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924886866] [2020-10-29 05:03:17,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:17,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:18,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:22,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:22,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-29 05:03:22,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:03:22,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 05:03:22,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:22,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:22,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:22,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-29 05:03:22,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 05:03:22,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:23,274 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:03:23,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:03:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:23,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:23,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:23,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:03:23,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:23,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:03:23,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:23,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:23,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:23,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:23,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:23,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:23,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:03:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:23,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:23,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:23,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:03:23,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:23,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:03:23,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:23,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:23,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:23,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:23,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:23,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:23,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 05:03:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:23,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:23,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:23,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:03:23,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:23,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:03:23,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:23,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:23,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:03:23,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:23,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 05:03:23,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:23,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 05:03:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:23,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:23,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:23,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 05:03:23,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:23,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-29 05:03:23,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:23,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:23,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:23,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:03:23,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 05:03:23,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:24,134 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 05:03:24,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924886866] [2020-10-29 05:03:24,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:03:24,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:03:24,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406108480] [2020-10-29 05:03:24,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:03:24,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:03:24,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:03:24,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:03:24,136 INFO L87 Difference]: Start difference. First operand 45609 states and 58851 transitions. Second operand 8 states. [2020-10-29 05:03:24,535 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:03:26,732 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 05:03:29,761 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:03:33,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:33,228 INFO L93 Difference]: Finished difference Result 101393 states and 136407 transitions. [2020-10-29 05:03:33,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 05:03:33,229 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 328 [2020-10-29 05:03:33,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:33,408 INFO L225 Difference]: With dead ends: 101393 [2020-10-29 05:03:33,408 INFO L226 Difference]: Without dead ends: 56421 [2020-10-29 05:03:33,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 05:03:33,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56421 states. [2020-10-29 05:03:35,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56421 to 55199. [2020-10-29 05:03:35,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55199 states. [2020-10-29 05:03:35,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55199 states to 55199 states and 69988 transitions. [2020-10-29 05:03:35,175 INFO L78 Accepts]: Start accepts. Automaton has 55199 states and 69988 transitions. Word has length 328 [2020-10-29 05:03:35,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:35,175 INFO L481 AbstractCegarLoop]: Abstraction has 55199 states and 69988 transitions. [2020-10-29 05:03:35,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:03:35,175 INFO L276 IsEmpty]: Start isEmpty. Operand 55199 states and 69988 transitions. [2020-10-29 05:03:35,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-29 05:03:35,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:35,269 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:03:35,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 05:03:35,269 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:35,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:35,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1372611054, now seen corresponding path program 1 times [2020-10-29 05:03:35,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:35,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958669063] [2020-10-29 05:03:35,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:35,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:37,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:38,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:40,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:40,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-29 05:03:40,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:03:40,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 05:03:40,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:40,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 05:03:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 05:03:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-29 05:03:40,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:40,679 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:03:40,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:03:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:40,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:40,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:40,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:03:40,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:40,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:03:40,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:40,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:40,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:40,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:40,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:40,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:40,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:03:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:40,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:40,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:40,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:03:40,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:40,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 05:03:40,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:40,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:40,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:03:40,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:40,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 05:03:40,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:03:40,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 05:03:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:41,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:41,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:41,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:03:41,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:41,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 05:03:41,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:41,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:41,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:41,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:03:41,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 05:03:41,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:41,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 05:03:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:41,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:41,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:41,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 05:03:41,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:41,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 05:03:41,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:41,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:41,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 05:03:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:03:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 05:03:41,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 87 proven. 104 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-29 05:03:41,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958669063] [2020-10-29 05:03:41,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:03:41,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:03:41,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628472198] [2020-10-29 05:03:41,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:03:41,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:03:41,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:03:41,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:03:41,542 INFO L87 Difference]: Start difference. First operand 55199 states and 69988 transitions. Second operand 8 states. [2020-10-29 05:03:41,826 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:03:42,580 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:03:43,690 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:03:44,049 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 05:03:49,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:49,418 INFO L93 Difference]: Finished difference Result 113676 states and 145530 transitions. [2020-10-29 05:03:49,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 05:03:49,418 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 340 [2020-10-29 05:03:49,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:49,685 INFO L225 Difference]: With dead ends: 113676 [2020-10-29 05:03:49,685 INFO L226 Difference]: Without dead ends: 75892 [2020-10-29 05:03:49,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:03:49,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75892 states. [2020-10-29 05:03:51,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75892 to 75184. [2020-10-29 05:03:51,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75184 states. [2020-10-29 05:03:51,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75184 states to 75184 states and 95836 transitions. [2020-10-29 05:03:51,719 INFO L78 Accepts]: Start accepts. Automaton has 75184 states and 95836 transitions. Word has length 340 [2020-10-29 05:03:51,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:51,719 INFO L481 AbstractCegarLoop]: Abstraction has 75184 states and 95836 transitions. [2020-10-29 05:03:51,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:03:51,720 INFO L276 IsEmpty]: Start isEmpty. Operand 75184 states and 95836 transitions. [2020-10-29 05:03:51,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-29 05:03:51,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:51,820 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:03:51,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 05:03:51,821 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:51,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:51,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1591730339, now seen corresponding path program 1 times [2020-10-29 05:03:51,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:51,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546155171] [2020-10-29 05:03:51,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:51,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:51,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:52,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:52,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:52,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:55,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:56,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:56,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:56,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-29 05:03:56,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 05:03:56,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 05:03:56,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:56,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:56,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:03:56,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-29 05:03:56,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 05:03:56,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:57,253 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:03:57,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:03:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:57,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:57,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:57,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:03:57,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:57,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:03:57,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:57,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:57,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:57,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:57,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:57,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:57,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:03:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:57,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:57,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:57,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:03:57,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:57,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:03:57,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:57,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:57,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:57,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:57,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:57,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:57,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:03:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:57,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:57,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:57,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:03:57,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:57,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:03:57,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:57,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:57,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:57,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 05:03:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:57,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:57,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:57,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:03:57,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:57,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:03:57,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:57,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:57,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:03:57,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:57,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 05:03:57,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:57,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 05:03:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:57,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:57,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:57,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:03:57,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:57,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 05:03:57,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:57,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:03:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 05:03:57,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:57,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 05:03:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:57,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:57,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:57,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 05:03:57,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:57,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 05:03:57,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:57,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:57,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:57,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:03:57,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 05:03:57,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:58,025 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 259 proven. 22 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-29 05:03:58,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546155171] [2020-10-29 05:03:58,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:03:58,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:03:58,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986722009] [2020-10-29 05:03:58,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:03:58,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:03:58,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:03:58,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:03:58,028 INFO L87 Difference]: Start difference. First operand 75184 states and 95836 transitions. Second operand 8 states. [2020-10-29 05:03:58,416 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:03:59,089 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:04:07,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:04:07,985 INFO L93 Difference]: Finished difference Result 244493 states and 338322 transitions. [2020-10-29 05:04:07,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:04:07,986 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 363 [2020-10-29 05:04:07,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:04:09,236 INFO L225 Difference]: With dead ends: 244493 [2020-10-29 05:04:09,236 INFO L226 Difference]: Without dead ends: 183551 [2020-10-29 05:04:09,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 05:04:09,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183551 states. [2020-10-29 05:04:14,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183551 to 180188. [2020-10-29 05:04:14,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180188 states.