/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:31:40,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:31:40,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:31:40,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:31:40,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:31:40,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:31:40,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:31:40,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:31:40,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:31:40,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:31:40,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:31:40,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:31:40,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:31:40,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:31:40,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:31:40,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:31:40,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:31:40,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:31:40,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:31:40,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:31:40,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:31:40,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:31:40,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:31:40,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:31:40,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:31:40,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:31:40,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:31:40,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:31:40,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:31:40,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:31:40,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:31:40,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:31:40,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:31:40,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:31:40,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:31:40,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:31:40,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:31:40,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:31:40,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:31:40,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:31:40,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:31:40,267 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:31:40,320 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:31:40,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:31:40,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:31:40,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:31:40,327 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:31:40,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:31:40,328 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:31:40,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:31:40,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:31:40,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:31:40,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:31:40,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:31:40,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:31:40,331 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:31:40,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:31:40,332 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:31:40,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:31:40,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:31:40,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:31:40,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:31:40,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:31:40,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:31:40,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:31:40,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:31:40,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:31:40,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:31:40,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:31:40,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:31:40,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:31:40,335 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:31:40,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:31:40,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:31:40,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:31:40,930 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:31:40,932 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:31:40,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label50.c [2020-10-26 23:31:41,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0313aaf9d/3befb7a1acca47e2a929421cd505abd6/FLAG60abd816f [2020-10-26 23:31:41,861 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:31:41,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label50.c [2020-10-26 23:31:41,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0313aaf9d/3befb7a1acca47e2a929421cd505abd6/FLAG60abd816f [2020-10-26 23:31:42,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0313aaf9d/3befb7a1acca47e2a929421cd505abd6 [2020-10-26 23:31:42,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:31:42,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:31:42,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:31:42,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:31:42,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:31:42,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:31:42" (1/1) ... [2020-10-26 23:31:42,096 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 26.10 11:31:42, skipping insertion in model container [2020-10-26 23:31:42,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:31:42" (1/1) ... [2020-10-26 23:31:42,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:31:42,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:31:42,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:31:42,777 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:31:43,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:31:43,114 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:31:43,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:43 WrapperNode [2020-10-26 23:31:43,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:31:43,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:31:43,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:31:43,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:31:43,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:43" (1/1) ... [2020-10-26 23:31:43,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:43" (1/1) ... [2020-10-26 23:31:43,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:43" (1/1) ... [2020-10-26 23:31:43,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:43" (1/1) ... [2020-10-26 23:31:43,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:43" (1/1) ... [2020-10-26 23:31:43,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:43" (1/1) ... [2020-10-26 23:31:43,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:43" (1/1) ... [2020-10-26 23:31:43,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:31:43,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:31:43,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:31:43,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:31:43,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:31:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:31:43,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:31:43,363 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:31:43,363 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:31:43,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:31:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:31:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:31:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:31:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:31:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:31:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:31:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:31:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:31:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:31:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:31:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:31:43,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:31:43,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:31:43,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:31:45,008 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:31:45,009 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:31:45,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:31:45 BoogieIcfgContainer [2020-10-26 23:31:45,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:31:45,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:31:45,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:31:45,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:31:45,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:31:42" (1/3) ... [2020-10-26 23:31:45,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fedfb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:31:45, skipping insertion in model container [2020-10-26 23:31:45,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:43" (2/3) ... [2020-10-26 23:31:45,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fedfb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:31:45, skipping insertion in model container [2020-10-26 23:31:45,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:31:45" (3/3) ... [2020-10-26 23:31:45,025 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label50.c [2020-10-26 23:31:45,042 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:31:45,048 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:31:45,072 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:31:45,118 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:31:45,118 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:31:45,118 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:31:45,118 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:31:45,118 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:31:45,118 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:31:45,119 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:31:45,119 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:31:45,159 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:31:45,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-26 23:31:45,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:45,171 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] [2020-10-26 23:31:45,171 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:45,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:45,182 INFO L82 PathProgramCache]: Analyzing trace with hash -200165848, now seen corresponding path program 1 times [2020-10-26 23:31:45,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:45,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322037832] [2020-10-26 23:31:45,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:45,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:45,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:45,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-26 23:31:45,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:45,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-10-26 23:31:45,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:31:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:31:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-26 23:31:45,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:31:46,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:46,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:46,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:46,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:46,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:46,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:31:46,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:46,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:46,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:46,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:31:46,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:31:46,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:31:46,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322037832] [2020-10-26 23:31:46,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:31:46,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:31:46,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242533823] [2020-10-26 23:31:46,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:31:46,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:46,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:31:46,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:31:46,245 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 5 states. [2020-10-26 23:31:49,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:49,950 INFO L93 Difference]: Finished difference Result 891 states and 1619 transitions. [2020-10-26 23:31:49,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:31:49,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-10-26 23:31:49,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:49,978 INFO L225 Difference]: With dead ends: 891 [2020-10-26 23:31:49,979 INFO L226 Difference]: Without dead ends: 565 [2020-10-26 23:31:49,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:50,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-26 23:31:50,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 559. [2020-10-26 23:31:50,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-26 23:31:50,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 907 transitions. [2020-10-26 23:31:50,089 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 907 transitions. Word has length 44 [2020-10-26 23:31:50,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:50,090 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 907 transitions. [2020-10-26 23:31:50,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:31:50,090 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 907 transitions. [2020-10-26 23:31:50,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-26 23:31:50,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:50,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:50,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:31:50,099 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:50,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:50,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1681292112, now seen corresponding path program 1 times [2020-10-26 23:31:50,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:50,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037118154] [2020-10-26 23:31:50,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:50,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:50,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:51,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:51,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-26 23:31:51,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:51,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1346 [2020-10-26 23:31:51,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:51,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:31:51,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:31:51,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:31:51,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:31:51,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:51,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:51,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:51,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:51,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:51,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:31:51,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:51,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:51,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:51,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:31:51,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:31:51,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:51,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:51,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:51,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:31:51,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:51,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-26 23:31:51,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:51,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:31:51,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:52,036 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:31:52,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037118154] [2020-10-26 23:31:52,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:31:52,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:31:52,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222844252] [2020-10-26 23:31:52,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:52,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:52,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:52,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:52,043 INFO L87 Difference]: Start difference. First operand 559 states and 907 transitions. Second operand 7 states. [2020-10-26 23:31:54,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:54,675 INFO L93 Difference]: Finished difference Result 1316 states and 2158 transitions. [2020-10-26 23:31:54,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:31:54,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-26 23:31:54,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:54,685 INFO L225 Difference]: With dead ends: 1316 [2020-10-26 23:31:54,686 INFO L226 Difference]: Without dead ends: 763 [2020-10-26 23:31:54,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:31:54,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2020-10-26 23:31:54,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 565. [2020-10-26 23:31:54,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 565 states. [2020-10-26 23:31:54,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 860 transitions. [2020-10-26 23:31:54,737 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 860 transitions. Word has length 130 [2020-10-26 23:31:54,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:54,737 INFO L481 AbstractCegarLoop]: Abstraction has 565 states and 860 transitions. [2020-10-26 23:31:54,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:54,738 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 860 transitions. [2020-10-26 23:31:54,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-26 23:31:54,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:54,743 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:54,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:31:54,744 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:54,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:54,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1474593372, now seen corresponding path program 1 times [2020-10-26 23:31:54,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:54,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051666502] [2020-10-26 23:31:54,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:54,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:54,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:55,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:56,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:58,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:58,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-26 23:31:58,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:31:58,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4138 [2020-10-26 23:31:58,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:58,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:31:58,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:31:58,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:31:58,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:59,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:59,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:59,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:59,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:59,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:59,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:31:59,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:59,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:59,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:59,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:31:59,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:59,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:59,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:59,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:59,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:31:59,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:59,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:31:59,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:59,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:59,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:59,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:31:59,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:59,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 23:31:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:59,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:59,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:59,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:31:59,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:59,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:31:59,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:59,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:59,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:31:59,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:59,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:59,357 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 72 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:31:59,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051666502] [2020-10-26 23:31:59,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:59,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:31:59,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929412935] [2020-10-26 23:31:59,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:31:59,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:59,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:31:59,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:31:59,360 INFO L87 Difference]: Start difference. First operand 565 states and 860 transitions. Second operand 8 states. [2020-10-26 23:32:03,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:03,159 INFO L93 Difference]: Finished difference Result 2266 states and 3590 transitions. [2020-10-26 23:32:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:32:03,160 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-10-26 23:32:03,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:03,174 INFO L225 Difference]: With dead ends: 2266 [2020-10-26 23:32:03,174 INFO L226 Difference]: Without dead ends: 1707 [2020-10-26 23:32:03,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:32:03,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2020-10-26 23:32:03,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1691. [2020-10-26 23:32:03,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1691 states. [2020-10-26 23:32:03,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2488 transitions. [2020-10-26 23:32:03,264 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2488 transitions. Word has length 199 [2020-10-26 23:32:03,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:03,264 INFO L481 AbstractCegarLoop]: Abstraction has 1691 states and 2488 transitions. [2020-10-26 23:32:03,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:32:03,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2488 transitions. [2020-10-26 23:32:03,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-26 23:32:03,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:03,273 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:03,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:32:03,273 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:03,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:03,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1999663316, now seen corresponding path program 1 times [2020-10-26 23:32:03,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:03,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910487000] [2020-10-26 23:32:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:03,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:03,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:03,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:04,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:06,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:06,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-26 23:32:06,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:32:06,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3564 [2020-10-26 23:32:06,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:06,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:32:06,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:32:06,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 23:32:06,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:06,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:06,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:06,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:06,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:06,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:06,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:32:06,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:06,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:06,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:06,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:32:06,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:07,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:07,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:07,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:07,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:32:07,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:07,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:32:07,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:07,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:07,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:07,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:32:07,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 23:32:07,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-26 23:32:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:07,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:07,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:07,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:32:07,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:07,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:32:07,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:07,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:07,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:32:07,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:07,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:32:07,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910487000] [2020-10-26 23:32:07,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:07,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:32:07,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290416051] [2020-10-26 23:32:07,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:32:07,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:07,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:32:07,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:32:07,322 INFO L87 Difference]: Start difference. First operand 1691 states and 2488 transitions. Second operand 7 states. [2020-10-26 23:32:10,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:10,304 INFO L93 Difference]: Finished difference Result 4246 states and 6847 transitions. [2020-10-26 23:32:10,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:32:10,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-10-26 23:32:10,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:10,330 INFO L225 Difference]: With dead ends: 4246 [2020-10-26 23:32:10,330 INFO L226 Difference]: Without dead ends: 2561 [2020-10-26 23:32:10,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:32:10,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2020-10-26 23:32:10,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2449. [2020-10-26 23:32:10,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2449 states. [2020-10-26 23:32:10,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 3416 transitions. [2020-10-26 23:32:10,472 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 3416 transitions. Word has length 202 [2020-10-26 23:32:10,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:10,472 INFO L481 AbstractCegarLoop]: Abstraction has 2449 states and 3416 transitions. [2020-10-26 23:32:10,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:32:10,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 3416 transitions. [2020-10-26 23:32:10,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-26 23:32:10,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:10,478 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:10,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:32:10,478 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:10,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:10,479 INFO L82 PathProgramCache]: Analyzing trace with hash 78426196, now seen corresponding path program 1 times [2020-10-26 23:32:10,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:10,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917632499] [2020-10-26 23:32:10,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:10,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:10,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:10,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:12,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:15,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:15,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-26 23:32:15,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:32:15,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-26 23:32:15,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:15,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:32:15,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:32:15,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:32:15,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:15,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:15,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:15,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:15,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:15,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:15,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:32:15,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:15,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:15,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:15,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:32:15,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:15,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:15,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:15,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:16,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:32:16,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:16,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-26 23:32:16,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:16,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:16,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:16,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:32:16,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:32:16,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 23:32:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:16,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:16,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:16,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:32:16,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:16,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-26 23:32:16,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:16,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:16,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:32:16,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:16,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:32:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 72 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:32:16,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917632499] [2020-10-26 23:32:16,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:16,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:32:16,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785788093] [2020-10-26 23:32:16,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:32:16,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:16,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:32:16,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:32:16,472 INFO L87 Difference]: Start difference. First operand 2449 states and 3416 transitions. Second operand 8 states. [2020-10-26 23:32:16,610 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 23:32:19,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:19,118 INFO L93 Difference]: Finished difference Result 5296 states and 7659 transitions. [2020-10-26 23:32:19,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:32:19,126 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 203 [2020-10-26 23:32:19,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:19,144 INFO L225 Difference]: With dead ends: 5296 [2020-10-26 23:32:19,144 INFO L226 Difference]: Without dead ends: 3035 [2020-10-26 23:32:19,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:32:19,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2020-10-26 23:32:19,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 2827. [2020-10-26 23:32:19,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2827 states. [2020-10-26 23:32:19,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 3797 transitions. [2020-10-26 23:32:19,266 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 3797 transitions. Word has length 203 [2020-10-26 23:32:19,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:19,267 INFO L481 AbstractCegarLoop]: Abstraction has 2827 states and 3797 transitions. [2020-10-26 23:32:19,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:32:19,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 3797 transitions. [2020-10-26 23:32:19,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-26 23:32:19,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:19,271 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:19,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:32:19,272 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:19,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:19,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1312787180, now seen corresponding path program 1 times [2020-10-26 23:32:19,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:19,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108449787] [2020-10-26 23:32:19,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:19,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:19,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:19,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:19,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:21,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:23,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:23,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-26 23:32:23,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:32:23,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3689 [2020-10-26 23:32:23,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:23,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:32:23,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:32:23,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-26 23:32:23,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:23,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:23,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:23,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:23,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:23,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:23,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:32:23,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:23,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:32:23,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:23,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:23,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:23,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:23,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:32:23,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:23,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:32:23,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:23,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:23,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:23,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:32:23,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:23,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:32:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:23,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:23,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:23,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:32:23,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:23,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-26 23:32:23,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:32:23,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 73 proven. 79 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:32:24,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108449787] [2020-10-26 23:32:24,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:24,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:32:24,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097796452] [2020-10-26 23:32:24,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:32:24,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:24,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:32:24,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:32:24,268 INFO L87 Difference]: Start difference. First operand 2827 states and 3797 transitions. Second operand 8 states. [2020-10-26 23:32:26,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:26,732 INFO L93 Difference]: Finished difference Result 5126 states and 7097 transitions. [2020-10-26 23:32:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:32:26,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2020-10-26 23:32:26,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:26,749 INFO L225 Difference]: With dead ends: 5126 [2020-10-26 23:32:26,749 INFO L226 Difference]: Without dead ends: 2855 [2020-10-26 23:32:26,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:32:26,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2020-10-26 23:32:26,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2643. [2020-10-26 23:32:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2643 states. [2020-10-26 23:32:26,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 3585 transitions. [2020-10-26 23:32:26,888 INFO L78 Accepts]: Start accepts. Automaton has 2643 states and 3585 transitions. Word has length 223 [2020-10-26 23:32:26,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:26,891 INFO L481 AbstractCegarLoop]: Abstraction has 2643 states and 3585 transitions. [2020-10-26 23:32:26,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:32:26,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2643 states and 3585 transitions. [2020-10-26 23:32:26,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-10-26 23:32:26,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:26,902 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:26,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:32:26,903 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:26,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:26,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1794977488, now seen corresponding path program 1 times [2020-10-26 23:32:26,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:26,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213959615] [2020-10-26 23:32:26,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:27,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:27,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:27,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:30,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:32,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:32,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-26 23:32:32,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:32:32,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 23:32:32,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:32,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:32,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:32:32,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:32:32,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:32,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:32,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:32,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:32,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:32,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:32,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:32:32,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:32,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:32,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:32,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:32,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:32,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:32,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:32,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:32,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:32,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:32,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:32:32,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:32,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:32,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:32,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:32,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:32:32,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:32,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:32,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:32,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:32,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:32,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-26 23:32:32,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:32,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:32,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:32,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:32:32,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:32,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:32,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:32,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:32,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:32:32,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:32,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 23:32:32,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:32,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:32,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:32:32,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:32,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-10-26 23:32:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:32,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:32,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:32,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:32:32,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:32,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:32:32,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:32,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:32:32,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:32,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:32,900 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 297 proven. 72 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2020-10-26 23:32:32,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213959615] [2020-10-26 23:32:32,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:32,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:32:32,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438761749] [2020-10-26 23:32:32,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:32:32,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:32,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:32:32,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:32:32,909 INFO L87 Difference]: Start difference. First operand 2643 states and 3585 transitions. Second operand 7 states. [2020-10-26 23:32:35,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:35,480 INFO L93 Difference]: Finished difference Result 5114 states and 7096 transitions. [2020-10-26 23:32:35,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:32:35,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 422 [2020-10-26 23:32:35,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:35,495 INFO L225 Difference]: With dead ends: 5114 [2020-10-26 23:32:35,495 INFO L226 Difference]: Without dead ends: 2845 [2020-10-26 23:32:35,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:32:35,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2020-10-26 23:32:35,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 2827. [2020-10-26 23:32:35,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2827 states. [2020-10-26 23:32:35,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 3770 transitions. [2020-10-26 23:32:35,591 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 3770 transitions. Word has length 422 [2020-10-26 23:32:35,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:35,592 INFO L481 AbstractCegarLoop]: Abstraction has 2827 states and 3770 transitions. [2020-10-26 23:32:35,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:32:35,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 3770 transitions. [2020-10-26 23:32:35,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2020-10-26 23:32:35,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:35,603 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:35,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:32:35,603 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:35,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:35,604 INFO L82 PathProgramCache]: Analyzing trace with hash 2044624760, now seen corresponding path program 1 times [2020-10-26 23:32:35,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:35,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789429114] [2020-10-26 23:32:35,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:35,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:35,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:35,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:38,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:39,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:40,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:40,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 448 [2020-10-26 23:32:40,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:32:40,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-26 23:32:40,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:40,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:40,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:32:40,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:32:40,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:40,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:40,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:40,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:40,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:40,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:40,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:32:40,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:40,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:40,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:40,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:40,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:40,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:40,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:40,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:40,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:40,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:40,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:32:40,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:40,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:40,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:40,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:40,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:41,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:41,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:41,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:41,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:32:41,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:41,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:41,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:41,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:32:41,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:41,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:41,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:41,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:41,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:32:41,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:41,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:32:41,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:41,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:41,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:41,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:32:41,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:41,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-26 23:32:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:41,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:41,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:41,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:32:41,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:41,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:32:41,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:32:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:41,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:41,398 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 295 proven. 71 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2020-10-26 23:32:41,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789429114] [2020-10-26 23:32:41,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:41,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:32:41,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214890376] [2020-10-26 23:32:41,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:32:41,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:41,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:32:41,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:32:41,401 INFO L87 Difference]: Start difference. First operand 2827 states and 3770 transitions. Second operand 7 states. [2020-10-26 23:32:44,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:44,119 INFO L93 Difference]: Finished difference Result 6616 states and 9155 transitions. [2020-10-26 23:32:44,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:32:44,127 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 430 [2020-10-26 23:32:44,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:44,147 INFO L225 Difference]: With dead ends: 6616 [2020-10-26 23:32:44,147 INFO L226 Difference]: Without dead ends: 4163 [2020-10-26 23:32:44,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:32:44,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4163 states. [2020-10-26 23:32:44,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4163 to 3961. [2020-10-26 23:32:44,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3961 states. [2020-10-26 23:32:44,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3961 states to 3961 states and 5286 transitions. [2020-10-26 23:32:44,285 INFO L78 Accepts]: Start accepts. Automaton has 3961 states and 5286 transitions. Word has length 430 [2020-10-26 23:32:44,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:44,286 INFO L481 AbstractCegarLoop]: Abstraction has 3961 states and 5286 transitions. [2020-10-26 23:32:44,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:32:44,286 INFO L276 IsEmpty]: Start isEmpty. Operand 3961 states and 5286 transitions. [2020-10-26 23:32:44,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-10-26 23:32:44,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:44,304 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:44,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:32:44,304 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:44,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:44,305 INFO L82 PathProgramCache]: Analyzing trace with hash -767663608, now seen corresponding path program 1 times [2020-10-26 23:32:44,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:44,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786675263] [2020-10-26 23:32:44,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:44,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:44,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:44,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:45,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:49,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:49,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:49,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:49,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 554 [2020-10-26 23:32:49,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:32:49,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-26 23:32:49,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:49,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:49,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:32:49,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:32:49,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:49,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:49,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:49,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:49,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:49,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:49,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:32:49,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:49,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:49,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:49,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:49,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:49,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:49,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:49,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:49,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:49,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:32:49,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:49,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:49,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:49,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:49,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:49,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:49,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:49,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:49,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:49,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:49,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:32:49,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:49,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:49,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:49,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:32:49,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:49,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:49,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:49,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:49,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-26 23:32:49,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:49,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:32:49,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:49,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:49,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:49,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 23:32:49,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:49,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-10-26 23:32:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:49,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:49,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:49,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:32:49,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:49,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:32:49,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:32:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:49,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:50,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-10-26 23:32:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:50,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:50,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:50,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:32:50,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:50,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:32:50,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:50,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:50,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-26 23:32:50,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:50,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 349 proven. 150 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2020-10-26 23:32:50,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786675263] [2020-10-26 23:32:50,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:50,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:32:50,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750701196] [2020-10-26 23:32:50,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:32:50,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:50,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:32:50,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:32:50,402 INFO L87 Difference]: Start difference. First operand 3961 states and 5286 transitions. Second operand 8 states. [2020-10-26 23:32:53,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:53,576 INFO L93 Difference]: Finished difference Result 8302 states and 11217 transitions. [2020-10-26 23:32:53,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:32:53,578 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 534 [2020-10-26 23:32:53,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:53,599 INFO L225 Difference]: With dead ends: 8302 [2020-10-26 23:32:53,600 INFO L226 Difference]: Without dead ends: 4715 [2020-10-26 23:32:53,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:32:53,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4715 states. [2020-10-26 23:32:53,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4715 to 4701. [2020-10-26 23:32:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4701 states. [2020-10-26 23:32:53,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4701 states to 4701 states and 6261 transitions. [2020-10-26 23:32:53,737 INFO L78 Accepts]: Start accepts. Automaton has 4701 states and 6261 transitions. Word has length 534 [2020-10-26 23:32:53,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:53,738 INFO L481 AbstractCegarLoop]: Abstraction has 4701 states and 6261 transitions. [2020-10-26 23:32:53,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:32:53,738 INFO L276 IsEmpty]: Start isEmpty. Operand 4701 states and 6261 transitions. [2020-10-26 23:32:53,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2020-10-26 23:32:53,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:53,755 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:53,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:32:53,755 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:53,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:53,756 INFO L82 PathProgramCache]: Analyzing trace with hash -2004276992, now seen corresponding path program 1 times [2020-10-26 23:32:53,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:53,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473674542] [2020-10-26 23:32:53,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:53,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:53,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:54,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:55,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:55,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:58,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:58,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-26 23:32:58,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:32:58,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-26 23:32:58,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:58,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:32:58,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:32:58,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:32:58,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:58,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:59,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:59,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:59,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:59,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:59,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:32:59,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:59,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:59,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:59,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:59,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:59,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:59,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:59,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:59,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:59,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:59,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:32:59,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:59,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:59,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:59,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:59,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:59,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:59,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:59,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:59,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:59,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:59,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:32:59,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:59,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:59,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:59,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:32:59,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:59,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:59,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:59,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:59,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:59,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:32:59,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:59,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-26 23:32:59,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:32:59,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:59,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-26 23:32:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:59,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:59,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:59,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:32:59,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:59,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-26 23:32:59,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:59,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:59,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:59,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:32:59,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:59,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-10-26 23:32:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:59,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:59,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:59,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:32:59,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:59,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:32:59,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-26 23:32:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:59,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:59,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 521 proven. 165 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2020-10-26 23:32:59,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473674542] [2020-10-26 23:32:59,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:59,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:32:59,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248486508] [2020-10-26 23:32:59,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:32:59,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:59,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:32:59,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:32:59,802 INFO L87 Difference]: Start difference. First operand 4701 states and 6261 transitions. Second operand 7 states. [2020-10-26 23:33:03,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:03,391 INFO L93 Difference]: Finished difference Result 9782 states and 13041 transitions. [2020-10-26 23:33:03,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:33:03,392 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 541 [2020-10-26 23:33:03,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:03,414 INFO L225 Difference]: With dead ends: 9782 [2020-10-26 23:33:03,414 INFO L226 Difference]: Without dead ends: 5455 [2020-10-26 23:33:03,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:33:03,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5455 states. [2020-10-26 23:33:03,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5455 to 5255. [2020-10-26 23:33:03,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5255 states. [2020-10-26 23:33:03,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 6865 transitions. [2020-10-26 23:33:03,563 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 6865 transitions. Word has length 541 [2020-10-26 23:33:03,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:03,564 INFO L481 AbstractCegarLoop]: Abstraction has 5255 states and 6865 transitions. [2020-10-26 23:33:03,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:33:03,565 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 6865 transitions. [2020-10-26 23:33:03,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2020-10-26 23:33:03,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:03,574 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:33:03,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:33:03,575 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:03,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:03,575 INFO L82 PathProgramCache]: Analyzing trace with hash 731352288, now seen corresponding path program 1 times [2020-10-26 23:33:03,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:03,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879551581] [2020-10-26 23:33:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:03,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:03,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:04,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:05,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:05,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:06,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:08,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:08,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 577 [2020-10-26 23:33:08,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:33:08,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 23:33:08,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:08,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:08,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 333 [2020-10-26 23:33:08,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:33:08,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:08,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:08,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:08,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:08,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:08,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:08,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:33:08,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:08,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:08,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:08,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:08,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:08,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:08,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:08,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:08,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:08,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:08,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:33:08,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:08,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:08,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:08,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:08,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:08,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:08,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:08,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:08,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:08,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:08,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:33:08,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:08,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:08,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:08,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:08,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:08,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:09,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:09,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:09,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:33:09,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:09,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:33:09,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:09,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:09,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:09,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:33:09,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:09,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-26 23:33:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:09,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:09,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:09,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:33:09,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:09,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:33:09,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:33:09,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:09,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-26 23:33:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:09,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:09,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:09,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:33:09,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:09,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:33:09,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:09,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:09,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-26 23:33:09,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:09,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 442 proven. 82 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2020-10-26 23:33:09,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879551581] [2020-10-26 23:33:09,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:09,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:33:09,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825718200] [2020-10-26 23:33:09,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:33:09,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:09,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:33:09,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:33:09,564 INFO L87 Difference]: Start difference. First operand 5255 states and 6865 transitions. Second operand 8 states. [2020-10-26 23:33:12,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:12,600 INFO L93 Difference]: Finished difference Result 10540 states and 13866 transitions. [2020-10-26 23:33:12,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:33:12,601 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 557 [2020-10-26 23:33:12,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:12,621 INFO L225 Difference]: With dead ends: 10540 [2020-10-26 23:33:12,622 INFO L226 Difference]: Without dead ends: 5659 [2020-10-26 23:33:12,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:33:12,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5659 states. [2020-10-26 23:33:12,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5659 to 5269. [2020-10-26 23:33:12,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5269 states. [2020-10-26 23:33:12,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5269 states to 5269 states and 6942 transitions. [2020-10-26 23:33:12,771 INFO L78 Accepts]: Start accepts. Automaton has 5269 states and 6942 transitions. Word has length 557 [2020-10-26 23:33:12,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:12,772 INFO L481 AbstractCegarLoop]: Abstraction has 5269 states and 6942 transitions. [2020-10-26 23:33:12,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:33:12,772 INFO L276 IsEmpty]: Start isEmpty. Operand 5269 states and 6942 transitions. [2020-10-26 23:33:12,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2020-10-26 23:33:12,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:12,785 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:33:12,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:33:12,786 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:12,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:12,786 INFO L82 PathProgramCache]: Analyzing trace with hash 566306192, now seen corresponding path program 1 times [2020-10-26 23:33:12,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:12,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029034365] [2020-10-26 23:33:12,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:12,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:13,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:13,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:15,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:15,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:16,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:17,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:17,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 614 [2020-10-26 23:33:17,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:33:17,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-26 23:33:17,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:17,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:17,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 370 [2020-10-26 23:33:17,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:33:17,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:18,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:18,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:18,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:18,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:18,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:18,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:33:18,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:18,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:18,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:18,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:18,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:18,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:18,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:18,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:18,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:18,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:18,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:33:18,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:18,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:18,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:18,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:18,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:18,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:18,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:18,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:33:18,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:18,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:18,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:18,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:18,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:18,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:18,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:18,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:18,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 23:33:18,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:18,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:33:18,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:33:18,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:18,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-10-26 23:33:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:18,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:18,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:18,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:18,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:33:18,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:18,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 23:33:18,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:33:18,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:18,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-26 23:33:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:18,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:18,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:18,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:33:18,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:18,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:33:18,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-26 23:33:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:18,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 442 proven. 82 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2020-10-26 23:33:19,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029034365] [2020-10-26 23:33:19,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:19,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:33:19,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330110892] [2020-10-26 23:33:19,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:33:19,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:19,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:33:19,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:33:19,153 INFO L87 Difference]: Start difference. First operand 5269 states and 6942 transitions. Second operand 7 states. [2020-10-26 23:33:21,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:21,316 INFO L93 Difference]: Finished difference Result 10638 states and 14008 transitions. [2020-10-26 23:33:21,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:33:21,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 594 [2020-10-26 23:33:21,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:21,342 INFO L225 Difference]: With dead ends: 10638 [2020-10-26 23:33:21,342 INFO L226 Difference]: Without dead ends: 5281 [2020-10-26 23:33:21,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:33:21,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5281 states. [2020-10-26 23:33:21,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5281 to 5239. [2020-10-26 23:33:21,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5239 states. [2020-10-26 23:33:21,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5239 states to 5239 states and 6346 transitions. [2020-10-26 23:33:21,478 INFO L78 Accepts]: Start accepts. Automaton has 5239 states and 6346 transitions. Word has length 594 [2020-10-26 23:33:21,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:21,479 INFO L481 AbstractCegarLoop]: Abstraction has 5239 states and 6346 transitions. [2020-10-26 23:33:21,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:33:21,479 INFO L276 IsEmpty]: Start isEmpty. Operand 5239 states and 6346 transitions. [2020-10-26 23:33:21,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2020-10-26 23:33:21,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:21,491 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-26 23:33:21,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:33:21,492 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:21,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:21,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1237479084, now seen corresponding path program 1 times [2020-10-26 23:33:21,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:21,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740897650] [2020-10-26 23:33:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:21,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:21,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:23,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:23,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:24,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:26,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:26,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 729 [2020-10-26 23:33:26,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:33:26,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-26 23:33:26,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:26,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:26,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:33:26,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:33:26,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:26,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:26,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:26,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:26,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:26,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:26,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:33:26,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:26,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:26,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:26,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:26,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:26,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:26,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:26,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:26,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:26,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:26,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:33:26,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:26,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:26,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:26,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:26,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:26,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:26,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:26,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:26,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:26,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:26,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:33:26,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:26,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:26,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:26,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:26,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:26,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:26,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:26,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:26,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:26,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:26,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:33:26,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:26,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:26,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:33:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:27,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:27,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:27,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:33:27,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:27,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:33:27,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:27,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:27,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:27,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:33:27,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:27,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:33:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:27,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:27,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:27,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:27,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:27,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:33:27,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:27,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:27,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:27,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:33:27,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:27,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-10-26 23:33:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:27,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:27,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:27,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:33:27,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:27,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:33:27,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:27,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:27,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:33:27,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:27,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:27,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 527 proven. 72 refuted. 0 times theorem prover too weak. 1026 trivial. 0 not checked. [2020-10-26 23:33:27,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740897650] [2020-10-26 23:33:27,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:27,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:33:27,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207133037] [2020-10-26 23:33:27,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:33:27,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:27,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:33:27,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:33:27,547 INFO L87 Difference]: Start difference. First operand 5239 states and 6346 transitions. Second operand 7 states. [2020-10-26 23:33:30,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:30,845 INFO L93 Difference]: Finished difference Result 10852 states and 13201 transitions. [2020-10-26 23:33:30,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:33:30,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 707 [2020-10-26 23:33:30,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:30,867 INFO L225 Difference]: With dead ends: 10852 [2020-10-26 23:33:30,867 INFO L226 Difference]: Without dead ends: 5987 [2020-10-26 23:33:30,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:33:30,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5987 states. [2020-10-26 23:33:31,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5987 to 5607. [2020-10-26 23:33:31,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5607 states. [2020-10-26 23:33:31,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5607 states to 5607 states and 6743 transitions. [2020-10-26 23:33:31,022 INFO L78 Accepts]: Start accepts. Automaton has 5607 states and 6743 transitions. Word has length 707 [2020-10-26 23:33:31,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:31,024 INFO L481 AbstractCegarLoop]: Abstraction has 5607 states and 6743 transitions. [2020-10-26 23:33:31,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:33:31,024 INFO L276 IsEmpty]: Start isEmpty. Operand 5607 states and 6743 transitions. [2020-10-26 23:33:31,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2020-10-26 23:33:31,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:31,043 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:33:31,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:33:31,043 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:31,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:31,045 INFO L82 PathProgramCache]: Analyzing trace with hash 795794332, now seen corresponding path program 1 times [2020-10-26 23:33:31,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:31,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493982199] [2020-10-26 23:33:31,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:31,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:31,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:33,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:36,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:36,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 893 [2020-10-26 23:33:36,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:33:36,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-26 23:33:36,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:36,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:36,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:33:36,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 23:33:36,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:36,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:36,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:36,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:36,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:36,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:36,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:33:36,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:36,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:36,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:36,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:36,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:36,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:36,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:36,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:36,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:36,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:36,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:33:36,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:36,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:36,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:36,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:36,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:36,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:36,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:36,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:33:36,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:36,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:36,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:36,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:36,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:36,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:36,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:36,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:33:36,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:36,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:36,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:36,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:36,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:36,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:33:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:36,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:36,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:36,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:33:36,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:36,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 23:33:36,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:36,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:36,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:36,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:33:36,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:36,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:33:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:36,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:37,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:37,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:33:37,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:37,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-26 23:33:37,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:37,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:37,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:33:37,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:37,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 665 [2020-10-26 23:33:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:37,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:37,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:37,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:37,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:37,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:33:37,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:37,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:37,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:33:37,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:37,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:37,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 738 [2020-10-26 23:33:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:37,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:37,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:37,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:33:37,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:37,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:33:37,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:37,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:37,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:33:37,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:37,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2324 backedges. 782 proven. 164 refuted. 0 times theorem prover too weak. 1378 trivial. 0 not checked. [2020-10-26 23:33:37,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493982199] [2020-10-26 23:33:37,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:37,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:33:37,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291922747] [2020-10-26 23:33:37,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:33:37,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:37,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:33:37,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:33:37,859 INFO L87 Difference]: Start difference. First operand 5607 states and 6743 transitions. Second operand 7 states. [2020-10-26 23:33:40,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:40,367 INFO L93 Difference]: Finished difference Result 11232 states and 13639 transitions. [2020-10-26 23:33:40,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:33:40,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 869 [2020-10-26 23:33:40,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:40,402 INFO L225 Difference]: With dead ends: 11232 [2020-10-26 23:33:40,402 INFO L226 Difference]: Without dead ends: 5999 [2020-10-26 23:33:40,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:33:40,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5999 states. [2020-10-26 23:33:40,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5999 to 5979. [2020-10-26 23:33:40,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5979 states. [2020-10-26 23:33:40,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5979 states to 5979 states and 7129 transitions. [2020-10-26 23:33:40,556 INFO L78 Accepts]: Start accepts. Automaton has 5979 states and 7129 transitions. Word has length 869 [2020-10-26 23:33:40,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:40,558 INFO L481 AbstractCegarLoop]: Abstraction has 5979 states and 7129 transitions. [2020-10-26 23:33:40,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:33:40,558 INFO L276 IsEmpty]: Start isEmpty. Operand 5979 states and 7129 transitions. [2020-10-26 23:33:40,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2020-10-26 23:33:40,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:40,573 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-26 23:33:40,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:33:40,573 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:40,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:40,574 INFO L82 PathProgramCache]: Analyzing trace with hash -811451104, now seen corresponding path program 1 times [2020-10-26 23:33:40,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:40,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134524837] [2020-10-26 23:33:40,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:40,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:41,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:43,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:44,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:45,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:45,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 908 [2020-10-26 23:33:45,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:33:45,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-26 23:33:45,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:45,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:45,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:33:45,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:33:45,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:45,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:45,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:45,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:45,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:45,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:45,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:33:45,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:45,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:45,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:46,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:46,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:46,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:46,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:46,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:33:46,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:46,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:46,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:46,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:46,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:46,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:46,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:46,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:46,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:46,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:46,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:33:46,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:46,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:46,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:46,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:46,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:46,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:46,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:46,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:46,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:46,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:46,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:33:46,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:46,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:46,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:46,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:46,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:46,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:33:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:46,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:46,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:46,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:33:46,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:46,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:33:46,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:46,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:46,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:33:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:46,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:46,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:46,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:33:46,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:46,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:33:46,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:46,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:46,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:46,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:46,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:33:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:46,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:46,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:46,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:33:46,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:46,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:33:46,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:46,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:46,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:46,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:33:46,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:46,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:33:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:46,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:46,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:46,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:46,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:46,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:33:46,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:33:46,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:46,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-10-26 23:33:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:46,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:46,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:46,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:33:46,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:46,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:33:46,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:46,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:46,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:33:46,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:46,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:47,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 757 proven. 72 refuted. 0 times theorem prover too weak. 1875 trivial. 0 not checked. [2020-10-26 23:33:47,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134524837] [2020-10-26 23:33:47,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:47,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:33:47,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757852883] [2020-10-26 23:33:47,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:33:47,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:47,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:33:47,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:33:47,037 INFO L87 Difference]: Start difference. First operand 5979 states and 7129 transitions. Second operand 7 states. [2020-10-26 23:33:49,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:49,621 INFO L93 Difference]: Finished difference Result 11800 states and 14252 transitions. [2020-10-26 23:33:49,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:33:49,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 882 [2020-10-26 23:33:49,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:49,643 INFO L225 Difference]: With dead ends: 11800 [2020-10-26 23:33:49,643 INFO L226 Difference]: Without dead ends: 6197 [2020-10-26 23:33:49,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:33:49,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6197 states. [2020-10-26 23:33:49,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6197 to 6163. [2020-10-26 23:33:49,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6163 states. [2020-10-26 23:33:49,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6163 states to 6163 states and 7325 transitions. [2020-10-26 23:33:49,945 INFO L78 Accepts]: Start accepts. Automaton has 6163 states and 7325 transitions. Word has length 882 [2020-10-26 23:33:49,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:49,947 INFO L481 AbstractCegarLoop]: Abstraction has 6163 states and 7325 transitions. [2020-10-26 23:33:49,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:33:49,947 INFO L276 IsEmpty]: Start isEmpty. Operand 6163 states and 7325 transitions. [2020-10-26 23:33:49,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2020-10-26 23:33:49,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:49,966 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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] [2020-10-26 23:33:49,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:33:49,967 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:49,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:49,968 INFO L82 PathProgramCache]: Analyzing trace with hash 205418232, now seen corresponding path program 1 times [2020-10-26 23:33:49,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:49,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861369990] [2020-10-26 23:33:49,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:50,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:50,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:50,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:53,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:53,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:54,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:55,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:55,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 948 [2020-10-26 23:33:55,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:33:55,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 23:33:55,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:55,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:55,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 704 [2020-10-26 23:33:55,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:33:55,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:55,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:55,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:55,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:55,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:55,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:55,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:33:55,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:55,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:55,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:55,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:55,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:55,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:55,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:55,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:55,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:55,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:55,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:33:55,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:55,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:55,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:55,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:55,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:55,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:55,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:55,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:55,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:55,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:55,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:33:55,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:55,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:55,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:55,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:55,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:55,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:55,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:55,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:55,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:55,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:55,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:33:55,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:55,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:55,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:33:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:55,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:55,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:55,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:33:55,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:55,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:33:55,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:55,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:55,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:55,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:55,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:55,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:33:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:55,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:55,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:55,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:33:55,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:55,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:33:55,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:55,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:55,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:55,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:55,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:55,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:33:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:55,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:55,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:55,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-26 23:33:55,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:55,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:33:55,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:55,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:55,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:55,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:33:55,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:55,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-10-26 23:33:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:55,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:55,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:55,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:55,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:33:55,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:55,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 23:33:55,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:55,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:55,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:55,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:33:55,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:55,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 775 [2020-10-26 23:33:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:56,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:56,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:56,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:33:56,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:56,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:33:56,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-26 23:33:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:56,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:56,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2908 backedges. 815 proven. 82 refuted. 0 times theorem prover too weak. 2011 trivial. 0 not checked. [2020-10-26 23:33:56,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861369990] [2020-10-26 23:33:56,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:56,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:33:56,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564891582] [2020-10-26 23:33:56,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:33:56,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:56,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:33:56,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:33:56,783 INFO L87 Difference]: Start difference. First operand 6163 states and 7325 transitions. Second operand 6 states. [2020-10-26 23:33:58,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:58,726 INFO L93 Difference]: Finished difference Result 12023 states and 14342 transitions. [2020-10-26 23:33:58,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:33:58,727 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 922 [2020-10-26 23:33:58,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:58,748 INFO L225 Difference]: With dead ends: 12023 [2020-10-26 23:33:58,748 INFO L226 Difference]: Without dead ends: 6203 [2020-10-26 23:33:58,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:33:58,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6203 states. [2020-10-26 23:33:58,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6203 to 6161. [2020-10-26 23:33:58,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6161 states. [2020-10-26 23:33:58,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6161 states to 6161 states and 7316 transitions. [2020-10-26 23:33:58,888 INFO L78 Accepts]: Start accepts. Automaton has 6161 states and 7316 transitions. Word has length 922 [2020-10-26 23:33:58,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:58,890 INFO L481 AbstractCegarLoop]: Abstraction has 6161 states and 7316 transitions. [2020-10-26 23:33:58,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:33:58,890 INFO L276 IsEmpty]: Start isEmpty. Operand 6161 states and 7316 transitions. [2020-10-26 23:33:58,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2020-10-26 23:33:58,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:58,905 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 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] [2020-10-26 23:33:58,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:33:58,905 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:58,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:58,906 INFO L82 PathProgramCache]: Analyzing trace with hash -908070356, now seen corresponding path program 1 times [2020-10-26 23:33:58,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:58,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683916387] [2020-10-26 23:33:58,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:59,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:59,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:02,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:02,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:03,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:04,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:04,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 949 [2020-10-26 23:34:04,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:34:04,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-26 23:34:04,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:04,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:34:04,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:34:04,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:34:04,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:04,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:04,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:04,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:04,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:04,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:04,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:34:04,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:04,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:04,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:04,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:04,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:04,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:04,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:04,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:34:04,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:04,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:04,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:04,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:04,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:04,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:04,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:04,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:34:04,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:04,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:04,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:04,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:04,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:04,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:34:04,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:04,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:34:04,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:04,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:04,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:04,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:04,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:04,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:34:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:04,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:04,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:04,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:34:04,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:34:04,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:04,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:34:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:04,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:04,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:04,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:34:04,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:04,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:34:04,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:04,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:04,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:34:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:04,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:04,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:04,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:34:04,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:04,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:34:04,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:04,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:04,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:04,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:34:04,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:04,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:34:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:04,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:04,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:04,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:34:04,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:04,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-26 23:34:04,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:04,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:34:04,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:04,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:34:04,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:04,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-26 23:34:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:04,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:04,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:05,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:05,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:34:05,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:05,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-26 23:34:05,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:34:05,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:05,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2892 backedges. 1432 proven. 94 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:34:05,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683916387] [2020-10-26 23:34:05,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:05,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:34:05,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778943953] [2020-10-26 23:34:05,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:34:05,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:05,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:34:05,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:34:05,977 INFO L87 Difference]: Start difference. First operand 6161 states and 7316 transitions. Second operand 10 states. [2020-10-26 23:34:09,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:34:09,788 INFO L93 Difference]: Finished difference Result 13305 states and 16226 transitions. [2020-10-26 23:34:09,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 23:34:09,789 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 923 [2020-10-26 23:34:09,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:34:09,813 INFO L225 Difference]: With dead ends: 13305 [2020-10-26 23:34:09,813 INFO L226 Difference]: Without dead ends: 7485 [2020-10-26 23:34:09,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2020-10-26 23:34:09,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7485 states. [2020-10-26 23:34:09,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7485 to 7097. [2020-10-26 23:34:09,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7097 states. [2020-10-26 23:34:10,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7097 states to 7097 states and 8749 transitions. [2020-10-26 23:34:10,003 INFO L78 Accepts]: Start accepts. Automaton has 7097 states and 8749 transitions. Word has length 923 [2020-10-26 23:34:10,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:34:10,005 INFO L481 AbstractCegarLoop]: Abstraction has 7097 states and 8749 transitions. [2020-10-26 23:34:10,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:34:10,005 INFO L276 IsEmpty]: Start isEmpty. Operand 7097 states and 8749 transitions. [2020-10-26 23:34:10,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2020-10-26 23:34:10,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:10,027 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:34:10,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:34:10,027 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:10,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:10,028 INFO L82 PathProgramCache]: Analyzing trace with hash -501518540, now seen corresponding path program 1 times [2020-10-26 23:34:10,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:10,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304096767] [2020-10-26 23:34:10,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:10,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:10,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:12,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:12,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:15,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:15,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 982 [2020-10-26 23:34:15,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:34:15,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-26 23:34:15,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:34:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:34:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 23:34:15,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:15,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:15,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:15,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:15,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:15,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:15,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:34:15,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:15,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:15,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:15,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:15,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:15,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:15,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:15,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:15,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:34:15,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:15,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:15,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:15,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:15,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:15,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:15,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:15,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:15,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:15,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:15,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:34:15,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:15,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:15,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:15,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:15,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:15,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:15,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:15,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:15,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:34:15,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:15,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:34:15,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:15,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:15,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:15,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:15,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:15,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:34:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:15,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:15,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:15,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:34:15,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:15,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:34:15,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:15,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:15,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:15,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:15,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:15,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:34:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:15,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:15,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:15,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:34:15,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:15,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:34:15,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:15,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:15,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:15,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:15,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:15,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:34:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:15,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:15,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:15,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:34:15,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:15,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:34:15,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:15,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:15,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:15,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:34:15,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:15,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:34:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:15,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:16,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:16,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 23:34:16,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:16,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-26 23:34:16,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:34:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 23:34:16,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:16,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 825 [2020-10-26 23:34:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:16,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:16,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:16,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:16,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:34:16,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:16,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-26 23:34:16,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:16,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:16,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:16,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:34:16,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2928 backedges. 1468 proven. 94 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:34:17,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304096767] [2020-10-26 23:34:17,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:17,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:34:17,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527415372] [2020-10-26 23:34:17,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:34:17,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:17,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:34:17,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:34:17,984 INFO L87 Difference]: Start difference. First operand 7097 states and 8749 transitions. Second operand 10 states. [2020-10-26 23:34:18,821 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-26 23:34:22,192 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-26 23:34:22,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:34:22,432 INFO L93 Difference]: Finished difference Result 14275 states and 17682 transitions. [2020-10-26 23:34:22,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:34:22,432 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 956 [2020-10-26 23:34:22,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:34:22,453 INFO L225 Difference]: With dead ends: 14275 [2020-10-26 23:34:22,453 INFO L226 Difference]: Without dead ends: 7521 [2020-10-26 23:34:22,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2020-10-26 23:34:22,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7521 states. [2020-10-26 23:34:22,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7521 to 7097. [2020-10-26 23:34:22,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7097 states. [2020-10-26 23:34:22,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7097 states to 7097 states and 8742 transitions. [2020-10-26 23:34:22,647 INFO L78 Accepts]: Start accepts. Automaton has 7097 states and 8742 transitions. Word has length 956 [2020-10-26 23:34:22,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:34:22,648 INFO L481 AbstractCegarLoop]: Abstraction has 7097 states and 8742 transitions. [2020-10-26 23:34:22,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:34:22,648 INFO L276 IsEmpty]: Start isEmpty. Operand 7097 states and 8742 transitions. [2020-10-26 23:34:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2020-10-26 23:34:22,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:22,671 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:34:22,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:34:22,671 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:22,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:22,672 INFO L82 PathProgramCache]: Analyzing trace with hash 878565232, now seen corresponding path program 1 times [2020-10-26 23:34:22,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:22,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140856251] [2020-10-26 23:34:22,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:22,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:23,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:27,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:27,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:27,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:27,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 983 [2020-10-26 23:34:27,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:34:27,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 23:34:27,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:27,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:34:27,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:34:27,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-26 23:34:27,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:28,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:28,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:28,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:28,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:28,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:28,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:34:28,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:28,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:28,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:28,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:28,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:28,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:28,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:28,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:28,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:28,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:28,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:34:28,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:28,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:28,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:28,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:28,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:28,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:28,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:28,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:28,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:28,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:28,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:34:28,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:28,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:28,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:28,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:28,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:28,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:28,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:28,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:34:28,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:28,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:34:28,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:28,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:28,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:28,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:28,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:28,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:34:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:28,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:28,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:28,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:34:28,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:28,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:34:28,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:28,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:28,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:28,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:28,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:28,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:34:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:28,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:28,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:28,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:34:28,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:28,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:34:28,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:28,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:28,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:28,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:28,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:28,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:34:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:28,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:28,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:28,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:34:28,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:28,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:34:28,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:34:28,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:28,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:34:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:28,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:28,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:28,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:34:28,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:28,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-26 23:34:28,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:28,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:34:28,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:28,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:34:28,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:28,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 826 [2020-10-26 23:34:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:28,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:28,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:28,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:28,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:34:28,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:28,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 23:34:28,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:28,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:28,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:28,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:34:28,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:30,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2929 backedges. 1495 proven. 68 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:34:30,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140856251] [2020-10-26 23:34:30,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:30,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:34:30,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729381124] [2020-10-26 23:34:30,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:34:30,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:30,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:34:30,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:34:30,004 INFO L87 Difference]: Start difference. First operand 7097 states and 8742 transitions. Second operand 10 states. [2020-10-26 23:34:33,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:34:33,793 INFO L93 Difference]: Finished difference Result 14339 states and 17747 transitions. [2020-10-26 23:34:33,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 23:34:33,794 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 957 [2020-10-26 23:34:33,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:34:33,815 INFO L225 Difference]: With dead ends: 14339 [2020-10-26 23:34:33,815 INFO L226 Difference]: Without dead ends: 7513 [2020-10-26 23:34:33,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-10-26 23:34:33,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7513 states. [2020-10-26 23:34:33,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7513 to 7463. [2020-10-26 23:34:33,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7463 states. [2020-10-26 23:34:34,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7463 states to 7463 states and 9088 transitions. [2020-10-26 23:34:34,015 INFO L78 Accepts]: Start accepts. Automaton has 7463 states and 9088 transitions. Word has length 957 [2020-10-26 23:34:34,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:34:34,016 INFO L481 AbstractCegarLoop]: Abstraction has 7463 states and 9088 transitions. [2020-10-26 23:34:34,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:34:34,016 INFO L276 IsEmpty]: Start isEmpty. Operand 7463 states and 9088 transitions. [2020-10-26 23:34:34,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2020-10-26 23:34:34,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:34,035 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:34:34,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:34:34,036 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:34,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:34,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1566919692, now seen corresponding path program 1 times [2020-10-26 23:34:34,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:34,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894536218] [2020-10-26 23:34:34,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:34,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:34,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:34,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:36,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:39,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:39,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 994 [2020-10-26 23:34:39,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:34:39,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 23:34:39,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:39,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:34:39,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:34:39,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:34:39,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:39,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:39,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:39,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:39,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:39,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:39,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:34:39,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:39,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:39,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:39,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:39,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:39,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:39,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:39,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:34:39,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:39,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:39,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:39,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:39,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:39,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:39,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:39,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:34:39,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:39,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:39,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:39,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:39,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:39,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:34:39,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:39,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:34:39,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:39,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:39,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:34:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:39,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:39,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:39,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:34:39,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:39,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:34:39,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:39,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:39,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:39,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:39,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:39,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:34:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:39,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:39,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:39,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:34:39,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:39,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:34:39,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:39,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:39,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:39,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:34:39,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:39,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:34:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:39,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:40,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:40,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:40,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:34:40,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:40,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-10-26 23:34:40,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:34:40,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:40,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:34:40,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:41,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-26 23:34:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:41,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:41,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:41,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:34:41,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:41,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:34:41,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:34:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:41,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:41,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 837 [2020-10-26 23:34:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:41,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:41,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:41,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:34:41,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:41,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:34:41,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:41,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:41,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:34:41,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:41,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2922 backedges. 912 proven. 164 refuted. 0 times theorem prover too weak. 1846 trivial. 0 not checked. [2020-10-26 23:34:43,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894536218] [2020-10-26 23:34:43,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:43,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:34:43,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148074462] [2020-10-26 23:34:43,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:34:43,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:43,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:34:43,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:34:43,255 INFO L87 Difference]: Start difference. First operand 7463 states and 9088 transitions. Second operand 13 states. [2020-10-26 23:34:44,314 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2020-10-26 23:34:44,627 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2020-10-26 23:34:45,046 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 90 [2020-10-26 23:34:45,346 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2020-10-26 23:34:45,721 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-26 23:34:46,135 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 96 [2020-10-26 23:34:46,697 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 109 [2020-10-26 23:34:48,221 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2020-10-26 23:34:48,567 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2020-10-26 23:34:48,951 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 83 [2020-10-26 23:34:49,274 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2020-10-26 23:34:49,772 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 90 [2020-10-26 23:34:50,238 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 93 [2020-10-26 23:34:51,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:34:51,197 INFO L93 Difference]: Finished difference Result 14564 states and 17800 transitions. [2020-10-26 23:34:51,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 23:34:51,198 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 968 [2020-10-26 23:34:51,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:34:51,223 INFO L225 Difference]: With dead ends: 14564 [2020-10-26 23:34:51,223 INFO L226 Difference]: Without dead ends: 7369 [2020-10-26 23:34:51,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=252, Invalid=618, Unknown=0, NotChecked=0, Total=870 [2020-10-26 23:34:51,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7369 states. [2020-10-26 23:34:51,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7369 to 7357. [2020-10-26 23:34:51,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7357 states. [2020-10-26 23:34:51,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7357 states to 7357 states and 8978 transitions. [2020-10-26 23:34:51,408 INFO L78 Accepts]: Start accepts. Automaton has 7357 states and 8978 transitions. Word has length 968 [2020-10-26 23:34:51,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:34:51,409 INFO L481 AbstractCegarLoop]: Abstraction has 7357 states and 8978 transitions. [2020-10-26 23:34:51,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:34:51,409 INFO L276 IsEmpty]: Start isEmpty. Operand 7357 states and 8978 transitions. [2020-10-26 23:34:51,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2020-10-26 23:34:51,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:51,427 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:34:51,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:34:51,427 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:51,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:51,428 INFO L82 PathProgramCache]: Analyzing trace with hash -833855652, now seen corresponding path program 1 times [2020-10-26 23:34:51,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:51,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841566957] [2020-10-26 23:34:51,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:51,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:51,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:56,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:56,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1005 [2020-10-26 23:34:56,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:56,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-26 23:34:56,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:56,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:34:56,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:34:56,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-26 23:34:56,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:56,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:56,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:56,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:56,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:56,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:56,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:34:56,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:56,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:56,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:56,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:56,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:56,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:56,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:56,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:56,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:56,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:56,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:34:56,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:56,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:56,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:56,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:56,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:56,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:56,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:56,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:56,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:56,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:56,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:34:56,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:56,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:56,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:56,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:56,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:56,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:56,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:56,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:56,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:34:56,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:56,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:34:56,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:56,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:56,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:56,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:56,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:56,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:34:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:56,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:56,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:56,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:34:56,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:56,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:34:56,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:56,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:56,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:56,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:56,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:56,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:34:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:56,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:57,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:57,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:34:57,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:34:57,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:57,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:34:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:57,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:57,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:57,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:34:57,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:57,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:34:57,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:57,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:57,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:57,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:34:57,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:57,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:34:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:57,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:57,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:57,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:34:57,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:57,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-26 23:34:57,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:57,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:34:57,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:57,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:34:57,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:57,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:34:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:57,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:57,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:57,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:34:57,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:57,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 23:34:57,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:57,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:57,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:57,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:34:57,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2913 backedges. 1462 proven. 85 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:34:58,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841566957] [2020-10-26 23:34:58,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:58,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:34:58,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773397555] [2020-10-26 23:34:58,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:34:58,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:58,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:34:58,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:34:58,525 INFO L87 Difference]: Start difference. First operand 7357 states and 8978 transitions. Second operand 10 states. [2020-10-26 23:35:03,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:35:03,605 INFO L93 Difference]: Finished difference Result 15096 states and 18540 transitions. [2020-10-26 23:35:03,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:35:03,606 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 979 [2020-10-26 23:35:03,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:35:03,626 INFO L225 Difference]: With dead ends: 15096 [2020-10-26 23:35:03,626 INFO L226 Difference]: Without dead ends: 8115 [2020-10-26 23:35:03,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-26 23:35:03,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8115 states. [2020-10-26 23:35:03,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8115 to 8095. [2020-10-26 23:35:03,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8095 states. [2020-10-26 23:35:03,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8095 states to 8095 states and 9835 transitions. [2020-10-26 23:35:03,826 INFO L78 Accepts]: Start accepts. Automaton has 8095 states and 9835 transitions. Word has length 979 [2020-10-26 23:35:03,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:35:03,828 INFO L481 AbstractCegarLoop]: Abstraction has 8095 states and 9835 transitions. [2020-10-26 23:35:03,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:35:03,828 INFO L276 IsEmpty]: Start isEmpty. Operand 8095 states and 9835 transitions. [2020-10-26 23:35:03,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2020-10-26 23:35:03,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:03,848 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:35:03,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 23:35:03,848 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:03,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:03,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1765418868, now seen corresponding path program 1 times [2020-10-26 23:35:03,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:03,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593111731] [2020-10-26 23:35:03,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:04,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:04,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking...