/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:34:42,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:34:42,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:34:42,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:34:42,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:34:42,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:34:42,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:34:42,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:34:42,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:34:42,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:34:42,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:34:42,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:34:42,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:34:42,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:34:42,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:34:42,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:34:42,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:34:42,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:34:42,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:34:42,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:34:42,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:34:42,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:34:42,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:34:42,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:34:42,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:34:42,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:34:42,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:34:42,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:34:42,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:34:42,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:34:42,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:34:42,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:34:42,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:34:42,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:34:42,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:34:42,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:34:42,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:34:42,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:34:42,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:34:42,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:34:42,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:34:42,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 22:34:42,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:34:42,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:34:42,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:34:42,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:34:42,437 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:34:42,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:34:42,437 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:34:42,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:34:42,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:34:42,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:34:42,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:34:42,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:34:42,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:34:42,440 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:34:42,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:34:42,440 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:34:42,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:34:42,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:34:42,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:34:42,441 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:34:42,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:34:42,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:34:42,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:34:42,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:34:42,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:34:42,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:34:42,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:34:42,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:34:42,444 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:34:42,444 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:34:42,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:34:42,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:34:42,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:34:42,962 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:34:42,963 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:34:42,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label06.c [2020-10-26 22:34:43,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5012bff13/51cd565f0b06413abb8b214a51629b63/FLAG9a2c80bcf [2020-10-26 22:34:43,981 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:34:43,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label06.c [2020-10-26 22:34:43,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5012bff13/51cd565f0b06413abb8b214a51629b63/FLAG9a2c80bcf [2020-10-26 22:34:44,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5012bff13/51cd565f0b06413abb8b214a51629b63 [2020-10-26 22:34:44,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:34:44,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:34:44,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:34:44,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:34:44,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:34:44,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:34:44" (1/1) ... [2020-10-26 22:34:44,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7529837c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:44, skipping insertion in model container [2020-10-26 22:34:44,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:34:44" (1/1) ... [2020-10-26 22:34:44,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:34:44,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:34:44,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:34:44,857 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:34:45,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:34:45,251 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:34:45,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:45 WrapperNode [2020-10-26 22:34:45,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:34:45,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:34:45,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:34:45,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:34:45,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:45" (1/1) ... [2020-10-26 22:34:45,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:45" (1/1) ... [2020-10-26 22:34:45,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:45" (1/1) ... [2020-10-26 22:34:45,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:45" (1/1) ... [2020-10-26 22:34:45,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:45" (1/1) ... [2020-10-26 22:34:45,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:45" (1/1) ... [2020-10-26 22:34:45,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:45" (1/1) ... [2020-10-26 22:34:45,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:34:45,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:34:45,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:34:45,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:34:45,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:34:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:34:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:34:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:34:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:34:45,564 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:34:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:34:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:34:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:34:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:34:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:34:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:34:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:34:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:34:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:34:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:34:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:34:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:34:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:34:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:34:47,616 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:34:47,617 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:34:47,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:34:47 BoogieIcfgContainer [2020-10-26 22:34:47,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:34:47,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:34:47,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:34:47,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:34:47,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:34:44" (1/3) ... [2020-10-26 22:34:47,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a71f391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:34:47, skipping insertion in model container [2020-10-26 22:34:47,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:34:45" (2/3) ... [2020-10-26 22:34:47,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a71f391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:34:47, skipping insertion in model container [2020-10-26 22:34:47,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:34:47" (3/3) ... [2020-10-26 22:34:47,633 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label06.c [2020-10-26 22:34:47,646 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:34:47,652 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:34:47,667 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:34:47,699 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:34:47,699 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:34:47,699 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:34:47,699 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:34:47,699 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:34:47,700 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:34:47,700 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:34:47,700 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:34:47,727 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-26 22:34:47,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-26 22:34:47,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:34:47,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:34:47,739 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:34:47,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:34:47,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1896184136, now seen corresponding path program 1 times [2020-10-26 22:34:47,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:34:47,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098559669] [2020-10-26 22:34:47,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:34:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:34:48,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:48,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:34:48,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 22:34:48,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:34:48,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-10-26 22:34:48,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:34:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:34:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:34:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 22:34:48,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 22:34:49,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:34:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:34:49,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:49,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:34:49,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:34:49,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:34:49,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 22:34:49,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:34:49,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:34:49,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:34:49,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:34:49,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:34:49,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:34:49,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098559669] [2020-10-26 22:34:49,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:34:49,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 22:34:49,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864047246] [2020-10-26 22:34:49,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 22:34:49,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:34:49,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 22:34:49,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 22:34:49,194 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-26 22:34:52,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:34:52,619 INFO L93 Difference]: Finished difference Result 793 states and 1388 transitions. [2020-10-26 22:34:52,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:34:52,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-26 22:34:52,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:34:52,642 INFO L225 Difference]: With dead ends: 793 [2020-10-26 22:34:52,643 INFO L226 Difference]: Without dead ends: 432 [2020-10-26 22:34:52,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:34:52,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-26 22:34:52,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 426. [2020-10-26 22:34:52,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-10-26 22:34:52,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 613 transitions. [2020-10-26 22:34:52,753 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 613 transitions. Word has length 70 [2020-10-26 22:34:52,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:34:52,756 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 613 transitions. [2020-10-26 22:34:52,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 22:34:52,757 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 613 transitions. [2020-10-26 22:34:52,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-26 22:34:52,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:34:52,776 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:34:52,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:34:52,777 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:34:52,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:34:52,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1520328204, now seen corresponding path program 1 times [2020-10-26 22:34:52,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:34:52,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182514305] [2020-10-26 22:34:52,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:34:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:34:52,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:53,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:54,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:55,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:34:55,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-26 22:34:55,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:34:55,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2176 [2020-10-26 22:34:55,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:34:55,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:34:55,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:34:55,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 22:34:55,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:34:55,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:34:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:34:55,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:55,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:34:55,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:34:55,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:34:55,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 22:34:55,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:34:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:34:55,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:34:55,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:34:55,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:34:55,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:34:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:34:55,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:55,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:34:55,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 22:34:55,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:34:55,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-26 22:34:55,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:34:55,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:34:55,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:34:55,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:34:55,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:34:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:34:55,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182514305] [2020-10-26 22:34:55,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:34:55,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:34:55,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525396104] [2020-10-26 22:34:55,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:34:55,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:34:55,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:34:55,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:34:55,573 INFO L87 Difference]: Start difference. First operand 426 states and 613 transitions. Second operand 7 states. [2020-10-26 22:34:59,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:34:59,261 INFO L93 Difference]: Finished difference Result 1277 states and 1862 transitions. [2020-10-26 22:34:59,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:34:59,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-26 22:34:59,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:34:59,273 INFO L225 Difference]: With dead ends: 1277 [2020-10-26 22:34:59,273 INFO L226 Difference]: Without dead ends: 857 [2020-10-26 22:34:59,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:34:59,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2020-10-26 22:34:59,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 821. [2020-10-26 22:34:59,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-10-26 22:34:59,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1098 transitions. [2020-10-26 22:34:59,330 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1098 transitions. Word has length 142 [2020-10-26 22:34:59,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:34:59,331 INFO L481 AbstractCegarLoop]: Abstraction has 821 states and 1098 transitions. [2020-10-26 22:34:59,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:34:59,331 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1098 transitions. [2020-10-26 22:34:59,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-26 22:34:59,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:34:59,335 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:34:59,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:34:59,335 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:34:59,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:34:59,336 INFO L82 PathProgramCache]: Analyzing trace with hash -731498524, now seen corresponding path program 1 times [2020-10-26 22:34:59,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:34:59,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901142433] [2020-10-26 22:34:59,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:34:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:34:59,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:34:59,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:00,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:00,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:01,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:01,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-26 22:35:01,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:35:01,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2255 [2020-10-26 22:35:01,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:01,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:35:01,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:35:01,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-26 22:35:01,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:01,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:01,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:01,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:01,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:01,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:01,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 22:35:01,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:01,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:01,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:01,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:35:01,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:01,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:01,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:01,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:02,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:02,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:35:02,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:35:02,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-26 22:35:02,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:35:02,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 22:35:02,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901142433] [2020-10-26 22:35:02,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:02,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:35:02,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687987811] [2020-10-26 22:35:02,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:35:02,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:02,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:35:02,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:35:02,191 INFO L87 Difference]: Start difference. First operand 821 states and 1098 transitions. Second operand 6 states. [2020-10-26 22:35:05,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:05,080 INFO L93 Difference]: Finished difference Result 2041 states and 2690 transitions. [2020-10-26 22:35:05,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:35:05,085 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2020-10-26 22:35:05,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:05,092 INFO L225 Difference]: With dead ends: 2041 [2020-10-26 22:35:05,093 INFO L226 Difference]: Without dead ends: 1226 [2020-10-26 22:35:05,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:35:05,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2020-10-26 22:35:05,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1213. [2020-10-26 22:35:05,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-10-26 22:35:05,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1528 transitions. [2020-10-26 22:35:05,145 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1528 transitions. Word has length 150 [2020-10-26 22:35:05,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:05,146 INFO L481 AbstractCegarLoop]: Abstraction has 1213 states and 1528 transitions. [2020-10-26 22:35:05,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:35:05,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1528 transitions. [2020-10-26 22:35:05,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-26 22:35:05,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:05,150 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:35:05,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:35:05,151 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:05,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:05,152 INFO L82 PathProgramCache]: Analyzing trace with hash 720472939, now seen corresponding path program 1 times [2020-10-26 22:35:05,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:05,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878224918] [2020-10-26 22:35:05,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:05,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:05,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:05,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-26 22:35:05,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:05,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-26 22:35:05,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:05,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:05,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:35:05,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-26 22:35:05,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-26 22:35:05,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:05,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:05,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:05,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:05,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:05,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 22:35:05,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:05,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:05,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:05,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:05,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:05,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:06,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:06,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:06,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:35:06,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:06,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-26 22:35:06,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:35:06,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:06,282 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:35:06,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878224918] [2020-10-26 22:35:06,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:06,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:35:06,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273491151] [2020-10-26 22:35:06,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:35:06,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:06,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:35:06,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:35:06,287 INFO L87 Difference]: Start difference. First operand 1213 states and 1528 transitions. Second operand 5 states. [2020-10-26 22:35:09,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:09,110 INFO L93 Difference]: Finished difference Result 2450 states and 3261 transitions. [2020-10-26 22:35:09,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:35:09,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 201 [2020-10-26 22:35:09,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:09,125 INFO L225 Difference]: With dead ends: 2450 [2020-10-26 22:35:09,125 INFO L226 Difference]: Without dead ends: 1621 [2020-10-26 22:35:09,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:35:09,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2020-10-26 22:35:09,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1605. [2020-10-26 22:35:09,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2020-10-26 22:35:09,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2021 transitions. [2020-10-26 22:35:09,180 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2021 transitions. Word has length 201 [2020-10-26 22:35:09,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:09,181 INFO L481 AbstractCegarLoop]: Abstraction has 1605 states and 2021 transitions. [2020-10-26 22:35:09,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:35:09,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2021 transitions. [2020-10-26 22:35:09,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-26 22:35:09,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:09,188 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:35:09,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:35:09,189 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:09,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:09,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1630802622, now seen corresponding path program 1 times [2020-10-26 22:35:09,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:09,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944160001] [2020-10-26 22:35:09,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:09,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:09,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:09,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:12,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:14,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:14,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-26 22:35:14,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:35:14,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 22:35:14,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:35:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:35:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-26 22:35:14,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:14,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:14,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:14,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:14,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:14,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:14,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 22:35:14,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:14,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:14,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:14,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:35:14,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:14,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:14,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:14,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:14,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:35:14,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:14,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-26 22:35:14,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:14,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:14,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:14,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:35:14,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:35:14,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:35:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:14,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:15,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:15,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:35:15,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:15,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-26 22:35:15,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:15,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:35:15,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:15,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:35:15,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 110 proven. 17 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-26 22:35:15,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944160001] [2020-10-26 22:35:15,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:15,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:35:15,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948109980] [2020-10-26 22:35:15,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:35:15,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:15,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:35:15,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:35:15,424 INFO L87 Difference]: Start difference. First operand 1605 states and 2021 transitions. Second operand 8 states. [2020-10-26 22:35:19,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:19,683 INFO L93 Difference]: Finished difference Result 2889 states and 3882 transitions. [2020-10-26 22:35:19,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:35:19,688 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 259 [2020-10-26 22:35:19,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:19,705 INFO L225 Difference]: With dead ends: 2889 [2020-10-26 22:35:19,705 INFO L226 Difference]: Without dead ends: 2246 [2020-10-26 22:35:19,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:35:19,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2020-10-26 22:35:19,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2212. [2020-10-26 22:35:19,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2212 states. [2020-10-26 22:35:19,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 2757 transitions. [2020-10-26 22:35:19,799 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 2757 transitions. Word has length 259 [2020-10-26 22:35:19,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:19,801 INFO L481 AbstractCegarLoop]: Abstraction has 2212 states and 2757 transitions. [2020-10-26 22:35:19,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:35:19,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 2757 transitions. [2020-10-26 22:35:19,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-26 22:35:19,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:19,807 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:35:19,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:35:19,808 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:19,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:19,808 INFO L82 PathProgramCache]: Analyzing trace with hash 598622790, now seen corresponding path program 1 times [2020-10-26 22:35:19,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:19,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833111769] [2020-10-26 22:35:19,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:19,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:20,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:20,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:23,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:23,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 22:35:23,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:35:23,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3128 [2020-10-26 22:35:23,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:23,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:23,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:35:23,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:35:23,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:23,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:23,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:23,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:23,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:23,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:23,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:35:23,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:23,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:23,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:23,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:23,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:23,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:35:23,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:23,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-26 22:35:23,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:23,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:23,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:23,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:35:23,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:23,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:35:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:23,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:23,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:23,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:35:23,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:23,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-26 22:35:23,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:23,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:23,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:23,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:35:23,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:23,821 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:35:23,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833111769] [2020-10-26 22:35:23,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:23,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:35:23,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598163150] [2020-10-26 22:35:23,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:35:23,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:23,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:35:23,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:35:23,828 INFO L87 Difference]: Start difference. First operand 2212 states and 2757 transitions. Second operand 7 states. [2020-10-26 22:35:24,483 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-26 22:35:27,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:27,609 INFO L93 Difference]: Finished difference Result 4673 states and 5931 transitions. [2020-10-26 22:35:27,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 22:35:27,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-10-26 22:35:27,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:27,625 INFO L225 Difference]: With dead ends: 4673 [2020-10-26 22:35:27,626 INFO L226 Difference]: Without dead ends: 2845 [2020-10-26 22:35:27,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:35:27,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2020-10-26 22:35:27,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 2805. [2020-10-26 22:35:27,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2805 states. [2020-10-26 22:35:27,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3477 transitions. [2020-10-26 22:35:27,729 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3477 transitions. Word has length 260 [2020-10-26 22:35:27,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:27,729 INFO L481 AbstractCegarLoop]: Abstraction has 2805 states and 3477 transitions. [2020-10-26 22:35:27,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:35:27,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3477 transitions. [2020-10-26 22:35:27,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-26 22:35:27,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:27,737 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:35:27,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:35:27,737 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:27,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:27,738 INFO L82 PathProgramCache]: Analyzing trace with hash -471797198, now seen corresponding path program 1 times [2020-10-26 22:35:27,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:27,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261165279] [2020-10-26 22:35:27,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:27,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:28,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:28,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:28,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-26 22:35:28,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:35:28,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1176 [2020-10-26 22:35:28,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:28,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:28,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:35:28,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 22:35:28,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:29,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:29,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:29,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:29,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:29,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:29,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 22:35:29,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:29,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:29,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:29,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:29,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:29,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:29,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:29,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:29,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:35:29,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:29,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 22:35:29,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:29,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:29,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:29,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:29,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:29,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:35:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:29,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:29,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:29,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:35:29,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:29,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 22:35:29,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:29,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:29,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:29,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:35:29,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-26 22:35:29,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261165279] [2020-10-26 22:35:29,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:29,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:35:29,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681727698] [2020-10-26 22:35:29,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:35:29,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:29,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:35:29,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:35:29,647 INFO L87 Difference]: Start difference. First operand 2805 states and 3477 transitions. Second operand 5 states. [2020-10-26 22:35:31,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:31,834 INFO L93 Difference]: Finished difference Result 4475 states and 5666 transitions. [2020-10-26 22:35:31,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:35:31,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 270 [2020-10-26 22:35:31,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:31,856 INFO L225 Difference]: With dead ends: 4475 [2020-10-26 22:35:31,856 INFO L226 Difference]: Without dead ends: 2819 [2020-10-26 22:35:31,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:35:31,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2020-10-26 22:35:31,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2805. [2020-10-26 22:35:31,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2805 states. [2020-10-26 22:35:31,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3468 transitions. [2020-10-26 22:35:31,940 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3468 transitions. Word has length 270 [2020-10-26 22:35:31,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:31,941 INFO L481 AbstractCegarLoop]: Abstraction has 2805 states and 3468 transitions. [2020-10-26 22:35:31,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:35:31,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3468 transitions. [2020-10-26 22:35:31,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-26 22:35:31,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:31,949 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:35:31,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 22:35:31,950 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:31,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:31,950 INFO L82 PathProgramCache]: Analyzing trace with hash -720562510, now seen corresponding path program 1 times [2020-10-26 22:35:31,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:31,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251843909] [2020-10-26 22:35:31,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:32,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:32,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:32,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:34,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:34,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-26 22:35:34,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:35:34,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2438 [2020-10-26 22:35:34,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 22:35:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:35:34,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:34,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:34,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:34,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:34,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:34,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:34,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:35:34,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:34,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:34,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:34,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:34,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:34,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:34,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:34,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:34,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:35:34,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:34,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 22:35:34,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 22:35:34,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:34,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:35:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:34,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:35,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:35,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:35:35,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:35,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 22:35:35,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:35,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:35,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:35,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:35:35,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:35:35,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251843909] [2020-10-26 22:35:35,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:35,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:35:35,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593184210] [2020-10-26 22:35:35,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:35:35,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:35,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:35:35,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:35:35,242 INFO L87 Difference]: Start difference. First operand 2805 states and 3468 transitions. Second operand 7 states. [2020-10-26 22:35:39,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:39,086 INFO L93 Difference]: Finished difference Result 7300 states and 9763 transitions. [2020-10-26 22:35:39,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 22:35:39,088 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2020-10-26 22:35:39,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:39,116 INFO L225 Difference]: With dead ends: 7300 [2020-10-26 22:35:39,116 INFO L226 Difference]: Without dead ends: 4879 [2020-10-26 22:35:39,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:35:39,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4879 states. [2020-10-26 22:35:39,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4879 to 4750. [2020-10-26 22:35:39,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4750 states. [2020-10-26 22:35:39,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4750 states to 4750 states and 5768 transitions. [2020-10-26 22:35:39,304 INFO L78 Accepts]: Start accepts. Automaton has 4750 states and 5768 transitions. Word has length 270 [2020-10-26 22:35:39,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:39,305 INFO L481 AbstractCegarLoop]: Abstraction has 4750 states and 5768 transitions. [2020-10-26 22:35:39,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:35:39,305 INFO L276 IsEmpty]: Start isEmpty. Operand 4750 states and 5768 transitions. [2020-10-26 22:35:39,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-26 22:35:39,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:39,314 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:35:39,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 22:35:39,314 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:39,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:39,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1664271991, now seen corresponding path program 1 times [2020-10-26 22:35:39,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:39,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4085879] [2020-10-26 22:35:39,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:39,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:39,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:39,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:41,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:41,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-26 22:35:41,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:35:41,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2457 [2020-10-26 22:35:41,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:41,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:41,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:35:41,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:35:41,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:42,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:42,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:42,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:42,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:42,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:42,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:35:42,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:42,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:42,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:42,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:42,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:42,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:42,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:42,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:42,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:35:42,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:42,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 22:35:42,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:42,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:42,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:42,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:35:42,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:42,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:35:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:42,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:42,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:42,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 22:35:42,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:42,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-26 22:35:42,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:42,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:42,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:42,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:35:42,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:35:42,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4085879] [2020-10-26 22:35:42,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:42,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:35:42,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020888204] [2020-10-26 22:35:42,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:35:42,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:42,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:35:42,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:35:42,554 INFO L87 Difference]: Start difference. First operand 4750 states and 5768 transitions. Second operand 7 states. [2020-10-26 22:35:46,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:46,359 INFO L93 Difference]: Finished difference Result 11958 states and 15404 transitions. [2020-10-26 22:35:46,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:35:46,361 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2020-10-26 22:35:46,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:46,405 INFO L225 Difference]: With dead ends: 11958 [2020-10-26 22:35:46,405 INFO L226 Difference]: Without dead ends: 7592 [2020-10-26 22:35:46,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:35:46,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7592 states. [2020-10-26 22:35:46,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7592 to 7486. [2020-10-26 22:35:46,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7486 states. [2020-10-26 22:35:46,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7486 states to 7486 states and 8896 transitions. [2020-10-26 22:35:46,722 INFO L78 Accepts]: Start accepts. Automaton has 7486 states and 8896 transitions. Word has length 270 [2020-10-26 22:35:46,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:46,723 INFO L481 AbstractCegarLoop]: Abstraction has 7486 states and 8896 transitions. [2020-10-26 22:35:46,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:35:46,723 INFO L276 IsEmpty]: Start isEmpty. Operand 7486 states and 8896 transitions. [2020-10-26 22:35:46,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-26 22:35:46,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:46,730 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:35:46,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 22:35:46,730 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:46,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:46,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1535912345, now seen corresponding path program 1 times [2020-10-26 22:35:46,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:46,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669582010] [2020-10-26 22:35:46,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:46,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:46,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:47,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:48,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:50,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:51,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:51,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:51,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-26 22:35:51,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 22:35:51,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 22:35:51,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:35:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:35:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 22:35:51,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:51,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:51,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:51,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:51,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:51,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:51,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 22:35:51,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:35:51,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:51,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:52,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:52,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:52,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:52,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:35:52,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:35:52,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-26 22:35:52,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:52,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:52,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:52,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 22:35:52,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:52,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:35:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:52,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:52,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:52,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:35:52,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:52,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 22:35:52,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 22:35:52,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:52,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:52,699 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 124 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 22:35:52,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669582010] [2020-10-26 22:35:52,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:52,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:35:52,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210115406] [2020-10-26 22:35:52,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:35:52,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:52,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:35:52,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:35:52,703 INFO L87 Difference]: Start difference. First operand 7486 states and 8896 transitions. Second operand 7 states. [2020-10-26 22:35:56,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:35:56,377 INFO L93 Difference]: Finished difference Result 15865 states and 19718 transitions. [2020-10-26 22:35:56,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:35:56,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2020-10-26 22:35:56,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:35:56,416 INFO L225 Difference]: With dead ends: 15865 [2020-10-26 22:35:56,416 INFO L226 Difference]: Without dead ends: 8763 [2020-10-26 22:35:56,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:35:56,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8763 states. [2020-10-26 22:35:56,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8763 to 8461. [2020-10-26 22:35:56,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8461 states. [2020-10-26 22:35:56,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8461 states to 8461 states and 10070 transitions. [2020-10-26 22:35:56,683 INFO L78 Accepts]: Start accepts. Automaton has 8461 states and 10070 transitions. Word has length 281 [2020-10-26 22:35:56,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:35:56,684 INFO L481 AbstractCegarLoop]: Abstraction has 8461 states and 10070 transitions. [2020-10-26 22:35:56,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:35:56,684 INFO L276 IsEmpty]: Start isEmpty. Operand 8461 states and 10070 transitions. [2020-10-26 22:35:56,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-26 22:35:56,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:35:56,693 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:35:56,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 22:35:56,694 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:35:56,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:35:56,694 INFO L82 PathProgramCache]: Analyzing trace with hash 167455485, now seen corresponding path program 1 times [2020-10-26 22:35:56,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:35:56,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045274202] [2020-10-26 22:35:56,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:35:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:56,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:56,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:57,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:59,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:59,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-26 22:35:59,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:35:59,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2292 [2020-10-26 22:35:59,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:59,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:35:59,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:35:59,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 22:35:59,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:59,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:35:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:59,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:59,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:59,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:35:59,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:59,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:35:59,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:35:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:35:59,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:59,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:35:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:59,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:59,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:59,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:35:59,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:59,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 22:35:59,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:59,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:35:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:35:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:35:59,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:59,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:35:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:35:59,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:35:59,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:35:59,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 22:35:59,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:35:59,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-26 22:35:59,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:35:59,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:35:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:35:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 22:35:59,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:35:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 164 proven. 62 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 22:35:59,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045274202] [2020-10-26 22:35:59,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:35:59,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:35:59,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853108034] [2020-10-26 22:35:59,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:35:59,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:35:59,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:35:59,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:35:59,671 INFO L87 Difference]: Start difference. First operand 8461 states and 10070 transitions. Second operand 6 states. [2020-10-26 22:36:02,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:02,441 INFO L93 Difference]: Finished difference Result 14474 states and 17504 transitions. [2020-10-26 22:36:02,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:36:02,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 308 [2020-10-26 22:36:02,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:02,482 INFO L225 Difference]: With dead ends: 14474 [2020-10-26 22:36:02,482 INFO L226 Difference]: Without dead ends: 8521 [2020-10-26 22:36:02,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:36:02,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8521 states. [2020-10-26 22:36:02,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8521 to 8459. [2020-10-26 22:36:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8459 states. [2020-10-26 22:36:02,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8459 states to 8459 states and 9863 transitions. [2020-10-26 22:36:02,755 INFO L78 Accepts]: Start accepts. Automaton has 8459 states and 9863 transitions. Word has length 308 [2020-10-26 22:36:02,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:02,756 INFO L481 AbstractCegarLoop]: Abstraction has 8459 states and 9863 transitions. [2020-10-26 22:36:02,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:36:02,756 INFO L276 IsEmpty]: Start isEmpty. Operand 8459 states and 9863 transitions. [2020-10-26 22:36:02,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-26 22:36:02,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:02,765 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:36:02,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 22:36:02,766 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:02,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:02,767 INFO L82 PathProgramCache]: Analyzing trace with hash 839923860, now seen corresponding path program 1 times [2020-10-26 22:36:02,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:02,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78360247] [2020-10-26 22:36:02,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:02,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:03,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:04,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:04,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-26 22:36:04,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:36:04,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2052 [2020-10-26 22:36:04,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:04,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:04,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:36:04,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 22:36:04,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:05,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:05,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:05,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:05,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:05,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:05,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:36:05,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:05,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:05,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:05,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:05,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:05,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:36:05,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:05,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 22:36:05,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:36:05,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:05,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:36:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:05,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:05,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:05,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:36:05,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:05,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-26 22:36:05,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:05,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:05,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:05,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:36:05,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:05,571 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:36:05,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78360247] [2020-10-26 22:36:05,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:36:05,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:36:05,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482317487] [2020-10-26 22:36:05,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:36:05,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:05,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:36:05,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:36:05,573 INFO L87 Difference]: Start difference. First operand 8459 states and 9863 transitions. Second operand 7 states. [2020-10-26 22:36:10,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:10,159 INFO L93 Difference]: Finished difference Result 16944 states and 19776 transitions. [2020-10-26 22:36:10,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:36:10,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-26 22:36:10,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:10,206 INFO L225 Difference]: With dead ends: 16944 [2020-10-26 22:36:10,206 INFO L226 Difference]: Without dead ends: 10993 [2020-10-26 22:36:10,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:36:10,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10993 states. [2020-10-26 22:36:10,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10993 to 10006. [2020-10-26 22:36:10,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10006 states. [2020-10-26 22:36:10,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10006 states to 10006 states and 11595 transitions. [2020-10-26 22:36:10,484 INFO L78 Accepts]: Start accepts. Automaton has 10006 states and 11595 transitions. Word has length 311 [2020-10-26 22:36:10,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:10,484 INFO L481 AbstractCegarLoop]: Abstraction has 10006 states and 11595 transitions. [2020-10-26 22:36:10,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:36:10,485 INFO L276 IsEmpty]: Start isEmpty. Operand 10006 states and 11595 transitions. [2020-10-26 22:36:10,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-26 22:36:10,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:10,493 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:36:10,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 22:36:10,493 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:10,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:10,494 INFO L82 PathProgramCache]: Analyzing trace with hash 873180584, now seen corresponding path program 1 times [2020-10-26 22:36:10,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:10,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123006588] [2020-10-26 22:36:10,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:10,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:10,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:11,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:11,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-26 22:36:11,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:36:11,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 948 [2020-10-26 22:36:11,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:11,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:11,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-26 22:36:11,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-26 22:36:11,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:11,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:11,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:11,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:11,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:11,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:11,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:36:11,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:11,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:11,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:11,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:11,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:11,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:11,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:11,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:11,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:36:11,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:11,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 22:36:11,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:11,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:11,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:11,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:11,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:11,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:36:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:11,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:11,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:11,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 22:36:11,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:11,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-26 22:36:11,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:36:11,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:12,120 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-26 22:36:12,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123006588] [2020-10-26 22:36:12,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:36:12,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:36:12,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596263237] [2020-10-26 22:36:12,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:36:12,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:12,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:36:12,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:36:12,123 INFO L87 Difference]: Start difference. First operand 10006 states and 11595 transitions. Second operand 5 states. [2020-10-26 22:36:15,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:15,246 INFO L93 Difference]: Finished difference Result 20795 states and 24357 transitions. [2020-10-26 22:36:15,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:36:15,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-26 22:36:15,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:15,284 INFO L225 Difference]: With dead ends: 20795 [2020-10-26 22:36:15,284 INFO L226 Difference]: Without dead ends: 10983 [2020-10-26 22:36:15,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:36:15,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10983 states. [2020-10-26 22:36:15,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10983 to 10958. [2020-10-26 22:36:15,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10958 states. [2020-10-26 22:36:15,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10958 states to 10958 states and 12678 transitions. [2020-10-26 22:36:15,550 INFO L78 Accepts]: Start accepts. Automaton has 10958 states and 12678 transitions. Word has length 316 [2020-10-26 22:36:15,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:15,551 INFO L481 AbstractCegarLoop]: Abstraction has 10958 states and 12678 transitions. [2020-10-26 22:36:15,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:36:15,551 INFO L276 IsEmpty]: Start isEmpty. Operand 10958 states and 12678 transitions. [2020-10-26 22:36:15,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-26 22:36:15,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:15,566 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:36:15,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 22:36:15,566 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:15,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:15,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1537927507, now seen corresponding path program 1 times [2020-10-26 22:36:15,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:15,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277129049] [2020-10-26 22:36:15,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:15,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:15,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:15,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:16,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:16,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:16,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-26 22:36:16,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:36:16,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-10-26 22:36:16,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:36:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-26 22:36:16,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:16,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:16,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:16,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:16,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:16,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:16,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 22:36:16,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:16,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:16,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:16,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:36:16,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:16,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:16,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:16,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:16,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:16,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:36:16,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:36:16,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-26 22:36:16,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 22:36:16,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:16,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:36:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:16,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:16,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:16,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:16,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 22:36:16,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:36:16,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-26 22:36:16,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:16,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:16,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-26 22:36:16,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:36:16,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:16,978 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-26 22:36:16,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277129049] [2020-10-26 22:36:16,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:36:16,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 22:36:16,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839723108] [2020-10-26 22:36:16,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:36:16,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:16,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:36:16,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:36:16,980 INFO L87 Difference]: Start difference. First operand 10958 states and 12678 transitions. Second operand 5 states. [2020-10-26 22:36:18,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:18,928 INFO L93 Difference]: Finished difference Result 18843 states and 21893 transitions. [2020-10-26 22:36:18,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:36:18,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 360 [2020-10-26 22:36:18,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:18,960 INFO L225 Difference]: With dead ends: 18843 [2020-10-26 22:36:18,960 INFO L226 Difference]: Without dead ends: 10775 [2020-10-26 22:36:18,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:36:18,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10775 states. [2020-10-26 22:36:19,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10775 to 10755. [2020-10-26 22:36:19,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10755 states. [2020-10-26 22:36:19,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10755 states to 10755 states and 12411 transitions. [2020-10-26 22:36:19,205 INFO L78 Accepts]: Start accepts. Automaton has 10755 states and 12411 transitions. Word has length 360 [2020-10-26 22:36:19,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:19,206 INFO L481 AbstractCegarLoop]: Abstraction has 10755 states and 12411 transitions. [2020-10-26 22:36:19,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:36:19,206 INFO L276 IsEmpty]: Start isEmpty. Operand 10755 states and 12411 transitions. [2020-10-26 22:36:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-26 22:36:19,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:19,224 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:36:19,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 22:36:19,225 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:19,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:19,225 INFO L82 PathProgramCache]: Analyzing trace with hash 141414244, now seen corresponding path program 1 times [2020-10-26 22:36:19,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:19,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830682297] [2020-10-26 22:36:19,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:19,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:20,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:20,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:21,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:23,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:24,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:24,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-26 22:36:24,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 22:36:24,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-26 22:36:24,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:24,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 22:36:24,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:36:24,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 341 [2020-10-26 22:36:24,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:24,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:24,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:24,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:24,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:24,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:24,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:24,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 22:36:24,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:24,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:24,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:24,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:36:24,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:24,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:24,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:24,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:24,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:24,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:36:24,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:36:24,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-26 22:36:24,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:24,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:24,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:24,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:36:24,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:25,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:36:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:25,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:25,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:25,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:25,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 22:36:25,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:36:25,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-26 22:36:25,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:25,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:25,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:25,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-26 22:36:25,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:25,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-26 22:36:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:25,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:25,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:25,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:36:25,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:25,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-26 22:36:25,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:25,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:36:25,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:25,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:36:25,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 179 proven. 145 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-26 22:36:25,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830682297] [2020-10-26 22:36:25,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:36:25,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:36:25,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460274709] [2020-10-26 22:36:25,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:36:25,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:25,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:36:25,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:36:25,908 INFO L87 Difference]: Start difference. First operand 10755 states and 12411 transitions. Second operand 9 states. [2020-10-26 22:36:28,402 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2020-10-26 22:36:28,710 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-26 22:36:30,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:30,167 INFO L93 Difference]: Finished difference Result 18780 states and 22248 transitions. [2020-10-26 22:36:30,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 22:36:30,168 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 389 [2020-10-26 22:36:30,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:30,203 INFO L225 Difference]: With dead ends: 18780 [2020-10-26 22:36:30,203 INFO L226 Difference]: Without dead ends: 10887 [2020-10-26 22:36:30,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2020-10-26 22:36:30,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10887 states. [2020-10-26 22:36:30,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10887 to 10753. [2020-10-26 22:36:30,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10753 states. [2020-10-26 22:36:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10753 states to 10753 states and 12400 transitions. [2020-10-26 22:36:30,485 INFO L78 Accepts]: Start accepts. Automaton has 10753 states and 12400 transitions. Word has length 389 [2020-10-26 22:36:30,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:30,486 INFO L481 AbstractCegarLoop]: Abstraction has 10753 states and 12400 transitions. [2020-10-26 22:36:30,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:36:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 10753 states and 12400 transitions. [2020-10-26 22:36:30,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2020-10-26 22:36:30,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:30,505 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:36:30,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 22:36:30,506 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:30,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:30,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1510146692, now seen corresponding path program 1 times [2020-10-26 22:36:30,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:30,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803195994] [2020-10-26 22:36:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:30,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:30,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:33,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:35,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:35,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-26 22:36:35,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:36:35,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4952 [2020-10-26 22:36:35,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:35,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:36:35,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:36:35,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 343 [2020-10-26 22:36:35,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:35,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:35,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:35,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:35,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:35,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:35,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:36:35,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:35,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:35,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:35,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:36:35,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:35,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:35,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:35,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:35,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:36:35,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:35,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-26 22:36:35,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:35,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:35,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:35,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:36:35,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:35,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:36:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:36,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:36,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:36,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:36:36,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:36,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 22:36:36,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:36,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:36:36,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:36,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:36:36,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:36,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:36:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:36,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:36,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:36,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 22:36:36,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:36,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 22:36:36,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:36,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:36,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:36,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-26 22:36:36,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 195 proven. 6 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-26 22:36:36,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803195994] [2020-10-26 22:36:36,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:36:36,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:36:36,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21828370] [2020-10-26 22:36:36,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:36:36,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:36,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:36:36,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:36:36,516 INFO L87 Difference]: Start difference. First operand 10753 states and 12400 transitions. Second operand 9 states. [2020-10-26 22:36:42,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:42,533 INFO L93 Difference]: Finished difference Result 24910 states and 29676 transitions. [2020-10-26 22:36:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 22:36:42,534 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 403 [2020-10-26 22:36:42,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:42,575 INFO L225 Difference]: With dead ends: 24910 [2020-10-26 22:36:42,575 INFO L226 Difference]: Without dead ends: 16469 [2020-10-26 22:36:42,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2020-10-26 22:36:42,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16469 states. [2020-10-26 22:36:42,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16469 to 15583. [2020-10-26 22:36:42,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15583 states. [2020-10-26 22:36:42,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15583 states to 15583 states and 18096 transitions. [2020-10-26 22:36:42,970 INFO L78 Accepts]: Start accepts. Automaton has 15583 states and 18096 transitions. Word has length 403 [2020-10-26 22:36:42,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:42,971 INFO L481 AbstractCegarLoop]: Abstraction has 15583 states and 18096 transitions. [2020-10-26 22:36:42,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:36:42,971 INFO L276 IsEmpty]: Start isEmpty. Operand 15583 states and 18096 transitions. [2020-10-26 22:36:42,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-10-26 22:36:42,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:42,996 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:36:42,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 22:36:42,997 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:42,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:42,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1983968742, now seen corresponding path program 1 times [2020-10-26 22:36:42,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:42,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446886721] [2020-10-26 22:36:42,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:43,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:43,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:44,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:44,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-10-26 22:36:44,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:36:44,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1114 [2020-10-26 22:36:44,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:44,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:44,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-26 22:36:44,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-26 22:36:44,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:44,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:44,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:44,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:44,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:44,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:44,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:36:44,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:44,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:44,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:44,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:44,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:44,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:44,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:44,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:44,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:36:44,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:44,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 22:36:44,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:44,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:44,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:44,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:44,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:44,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:36:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:44,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:44,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:44,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:36:44,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:44,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-26 22:36:44,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:44,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:44,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:44,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 22:36:44,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:44,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 22:36:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:44,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:45,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:45,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-26 22:36:45,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:45,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-26 22:36:45,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:45,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:45,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:45,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-26 22:36:45,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:45,242 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 365 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 22:36:45,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446886721] [2020-10-26 22:36:45,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:36:45,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:36:45,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706511332] [2020-10-26 22:36:45,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:36:45,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:45,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:36:45,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:36:45,244 INFO L87 Difference]: Start difference. First operand 15583 states and 18096 transitions. Second operand 7 states. [2020-10-26 22:36:49,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:49,345 INFO L93 Difference]: Finished difference Result 30977 states and 36404 transitions. [2020-10-26 22:36:49,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:36:49,346 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 407 [2020-10-26 22:36:49,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:49,396 INFO L225 Difference]: With dead ends: 30977 [2020-10-26 22:36:49,396 INFO L226 Difference]: Without dead ends: 18284 [2020-10-26 22:36:49,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:36:49,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18284 states. [2020-10-26 22:36:49,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18284 to 18257. [2020-10-26 22:36:49,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18257 states. [2020-10-26 22:36:49,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18257 states to 18257 states and 21078 transitions. [2020-10-26 22:36:49,896 INFO L78 Accepts]: Start accepts. Automaton has 18257 states and 21078 transitions. Word has length 407 [2020-10-26 22:36:49,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:49,897 INFO L481 AbstractCegarLoop]: Abstraction has 18257 states and 21078 transitions. [2020-10-26 22:36:49,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:36:49,897 INFO L276 IsEmpty]: Start isEmpty. Operand 18257 states and 21078 transitions. [2020-10-26 22:36:49,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-10-26 22:36:49,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:49,921 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:36:49,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 22:36:49,921 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:49,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:49,922 INFO L82 PathProgramCache]: Analyzing trace with hash 987472646, now seen corresponding path program 1 times [2020-10-26 22:36:49,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:49,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583418278] [2020-10-26 22:36:49,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:50,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:50,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:51,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:53,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:53,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 485 [2020-10-26 22:36:53,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:36:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3707 [2020-10-26 22:36:53,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-26 22:36:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:36:53,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:53,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:36:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:53,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:53,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:53,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:36:53,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:53,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:36:53,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:53,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:53,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:53,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:53,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:53,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:36:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:53,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:53,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:53,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-26 22:36:53,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:53,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 22:36:53,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:36:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:36:53,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:54,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-26 22:36:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:54,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:54,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:54,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-26 22:36:54,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:54,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 22:36:54,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:54,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:36:54,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:36:54,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-26 22:36:54,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:54,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-26 22:36:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:54,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:54,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:36:54,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:36:54,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:36:54,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 22:36:54,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:36:54,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:36:54,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:36:54,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:36:54,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:36:54,571 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 331 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-26 22:36:54,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583418278] [2020-10-26 22:36:54,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:36:54,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:36:54,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156930084] [2020-10-26 22:36:54,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:36:54,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:36:54,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:36:54,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:36:54,580 INFO L87 Difference]: Start difference. First operand 18257 states and 21078 transitions. Second operand 7 states. [2020-10-26 22:36:58,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:36:58,845 INFO L93 Difference]: Finished difference Result 33841 states and 39189 transitions. [2020-10-26 22:36:58,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 22:36:58,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 469 [2020-10-26 22:36:58,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:36:58,896 INFO L225 Difference]: With dead ends: 33841 [2020-10-26 22:36:58,896 INFO L226 Difference]: Without dead ends: 18474 [2020-10-26 22:36:58,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:36:58,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18474 states. [2020-10-26 22:36:59,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18474 to 17877. [2020-10-26 22:36:59,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17877 states. [2020-10-26 22:36:59,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17877 states to 17877 states and 20596 transitions. [2020-10-26 22:36:59,299 INFO L78 Accepts]: Start accepts. Automaton has 17877 states and 20596 transitions. Word has length 469 [2020-10-26 22:36:59,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:36:59,301 INFO L481 AbstractCegarLoop]: Abstraction has 17877 states and 20596 transitions. [2020-10-26 22:36:59,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:36:59,301 INFO L276 IsEmpty]: Start isEmpty. Operand 17877 states and 20596 transitions. [2020-10-26 22:36:59,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-10-26 22:36:59,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:36:59,324 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:36:59,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 22:36:59,325 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:36:59,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:36:59,325 INFO L82 PathProgramCache]: Analyzing trace with hash -498012954, now seen corresponding path program 1 times [2020-10-26 22:36:59,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:36:59,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073424760] [2020-10-26 22:36:59,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:36:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:36:59,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:36:59,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:00,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:01,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:04,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:04,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 493 [2020-10-26 22:37:04,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:37:04,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4991 [2020-10-26 22:37:04,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:04,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 22:37:04,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-26 22:37:04,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-26 22:37:04,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:04,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:37:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:04,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:04,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:04,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:37:04,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:04,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:37:04,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:04,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:04,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:04,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:37:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:04,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:04,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:04,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:37:04,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:04,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 22:37:04,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:04,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:04,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:04,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:04,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:04,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:37:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:04,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:05,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:05,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:37:05,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:05,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-26 22:37:05,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:05,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:37:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 22:37:05,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:05,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 22:37:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:05,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:05,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:05,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-26 22:37:05,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:05,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 22:37:05,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:05,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:05,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:05,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 22:37:05,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:05,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-26 22:37:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:05,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:05,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:05,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:37:05,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:05,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 22:37:05,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:37:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:37:05,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 549 proven. 16 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2020-10-26 22:37:05,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073424760] [2020-10-26 22:37:05,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:37:05,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:37:05,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034931740] [2020-10-26 22:37:05,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:37:05,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:37:05,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:37:05,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:37:05,772 INFO L87 Difference]: Start difference. First operand 17877 states and 20596 transitions. Second operand 8 states. [2020-10-26 22:37:08,347 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-26 22:37:10,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:37:10,283 INFO L93 Difference]: Finished difference Result 37023 states and 44339 transitions. [2020-10-26 22:37:10,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:37:10,284 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 475 [2020-10-26 22:37:10,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:37:10,361 INFO L225 Difference]: With dead ends: 37023 [2020-10-26 22:37:10,361 INFO L226 Difference]: Without dead ends: 22008 [2020-10-26 22:37:10,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:37:10,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22008 states. [2020-10-26 22:37:11,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22008 to 21703. [2020-10-26 22:37:11,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21703 states. [2020-10-26 22:37:11,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21703 states to 21703 states and 25408 transitions. [2020-10-26 22:37:11,056 INFO L78 Accepts]: Start accepts. Automaton has 21703 states and 25408 transitions. Word has length 475 [2020-10-26 22:37:11,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:37:11,057 INFO L481 AbstractCegarLoop]: Abstraction has 21703 states and 25408 transitions. [2020-10-26 22:37:11,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:37:11,057 INFO L276 IsEmpty]: Start isEmpty. Operand 21703 states and 25408 transitions. [2020-10-26 22:37:11,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2020-10-26 22:37:11,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:37:11,079 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:37:11,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 22:37:11,079 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:37:11,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:37:11,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1985181241, now seen corresponding path program 1 times [2020-10-26 22:37:11,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:37:11,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719675275] [2020-10-26 22:37:11,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:37:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:11,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:11,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:12,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:13,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:16,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:16,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 508 [2020-10-26 22:37:16,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:37:16,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4930 [2020-10-26 22:37:16,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:16,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:16,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-26 22:37:16,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:37:16,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:16,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:37:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:16,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:16,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:16,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:37:16,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:16,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 22:37:16,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:16,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:16,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:37:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:16,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:16,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:16,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:37:16,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:16,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 22:37:16,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:16,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:16,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:16,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:16,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:16,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:37:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:16,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:16,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:16,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 22:37:16,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:16,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 22:37:16,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:16,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:37:16,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:16,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-26 22:37:16,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:16,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-26 22:37:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:16,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:16,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:16,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-26 22:37:16,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 22:37:16,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:37:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:16,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 22:37:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:16,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:16,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:16,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:37:16,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:16,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 22:37:16,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:16,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:16,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 22:37:16,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:16,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 411 proven. 72 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-26 22:37:17,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719675275] [2020-10-26 22:37:17,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:37:17,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:37:17,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374520138] [2020-10-26 22:37:17,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:37:17,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:37:17,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:37:17,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:37:17,141 INFO L87 Difference]: Start difference. First operand 21703 states and 25408 transitions. Second operand 8 states. [2020-10-26 22:37:22,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:37:22,612 INFO L93 Difference]: Finished difference Result 46273 states and 54616 transitions. [2020-10-26 22:37:22,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:37:22,613 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 490 [2020-10-26 22:37:22,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:37:22,666 INFO L225 Difference]: With dead ends: 46273 [2020-10-26 22:37:22,667 INFO L226 Difference]: Without dead ends: 24954 [2020-10-26 22:37:22,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:37:22,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24954 states. [2020-10-26 22:37:23,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24954 to 22053. [2020-10-26 22:37:23,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22053 states. [2020-10-26 22:37:23,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22053 states to 22053 states and 25669 transitions. [2020-10-26 22:37:23,137 INFO L78 Accepts]: Start accepts. Automaton has 22053 states and 25669 transitions. Word has length 490 [2020-10-26 22:37:23,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:37:23,137 INFO L481 AbstractCegarLoop]: Abstraction has 22053 states and 25669 transitions. [2020-10-26 22:37:23,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:37:23,137 INFO L276 IsEmpty]: Start isEmpty. Operand 22053 states and 25669 transitions. [2020-10-26 22:37:23,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2020-10-26 22:37:23,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:37:23,161 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:37:23,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 22:37:23,162 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:37:23,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:37:23,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1399550328, now seen corresponding path program 1 times [2020-10-26 22:37:23,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:37:23,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023035918] [2020-10-26 22:37:23,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:37:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:23,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:23,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:25,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:25,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:27,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:28,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:28,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 707 [2020-10-26 22:37:28,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:37:28,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5108 [2020-10-26 22:37:28,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:28,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:28,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 22:37:28,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 22:37:28,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:28,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:37:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:28,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:28,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:28,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:37:28,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:28,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:37:28,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:28,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:28,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:28,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:28,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:28,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:37:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:28,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:28,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:28,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:37:28,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:28,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 22:37:28,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:28,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:37:28,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:28,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 22:37:28,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:28,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-26 22:37:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:28,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:29,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:29,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:37:29,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:29,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-26 22:37:29,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:29,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:29,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:29,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:37:29,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:29,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-26 22:37:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:29,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:29,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:29,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:37:29,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:29,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 22:37:29,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:29,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:29,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 22:37:29,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:29,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:29,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-26 22:37:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:29,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:29,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:29,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:37:29,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:29,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 22:37:29,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-26 22:37:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:29,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:29,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-10-26 22:37:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:29,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:29,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:29,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:37:29,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:29,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 22:37:29,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:29,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:29,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-26 22:37:29,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:29,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:29,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 429 proven. 299 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2020-10-26 22:37:29,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023035918] [2020-10-26 22:37:29,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:37:29,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:37:29,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780530068] [2020-10-26 22:37:29,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:37:29,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:37:29,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:37:29,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:37:29,838 INFO L87 Difference]: Start difference. First operand 22053 states and 25669 transitions. Second operand 8 states. [2020-10-26 22:37:31,202 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-26 22:37:33,125 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-26 22:37:35,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:37:35,311 INFO L93 Difference]: Finished difference Result 44685 states and 52016 transitions. [2020-10-26 22:37:35,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 22:37:35,314 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 687 [2020-10-26 22:37:35,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:37:35,366 INFO L225 Difference]: With dead ends: 44685 [2020-10-26 22:37:35,367 INFO L226 Difference]: Without dead ends: 25330 [2020-10-26 22:37:35,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-26 22:37:35,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25330 states. [2020-10-26 22:37:35,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25330 to 23571. [2020-10-26 22:37:35,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23571 states. [2020-10-26 22:37:35,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23571 states to 23571 states and 27277 transitions. [2020-10-26 22:37:35,771 INFO L78 Accepts]: Start accepts. Automaton has 23571 states and 27277 transitions. Word has length 687 [2020-10-26 22:37:35,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:37:35,771 INFO L481 AbstractCegarLoop]: Abstraction has 23571 states and 27277 transitions. [2020-10-26 22:37:35,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:37:35,772 INFO L276 IsEmpty]: Start isEmpty. Operand 23571 states and 27277 transitions. [2020-10-26 22:37:35,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 712 [2020-10-26 22:37:35,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:37:35,805 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:37:35,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 22:37:35,805 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:37:35,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:37:35,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1727852218, now seen corresponding path program 1 times [2020-10-26 22:37:35,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:37:35,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96018024] [2020-10-26 22:37:35,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:37:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:36,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:36,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:36,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:39,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:40,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:40,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:40,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 731 [2020-10-26 22:37:40,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:37:40,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-26 22:37:40,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:40,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:37:40,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:37:40,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 289 [2020-10-26 22:37:40,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:41,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:37:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:41,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:41,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:41,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:37:41,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:41,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:37:41,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:37:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:37:41,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:41,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:37:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:41,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:41,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:41,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-26 22:37:41,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:41,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-26 22:37:41,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:41,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:41,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:41,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 22:37:41,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:41,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-26 22:37:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:41,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:41,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:41,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:37:41,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:41,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 22:37:41,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:41,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:41,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:41,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:37:41,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:41,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-26 22:37:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:41,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:41,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:41,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:37:41,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:41,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 22:37:41,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 22:37:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:41,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:41,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-26 22:37:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:41,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:42,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:42,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:37:42,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:42,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 22:37:42,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:42,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:42,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-26 22:37:42,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:42,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:42,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-10-26 22:37:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:42,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:42,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:42,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:37:42,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:42,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 22:37:42,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:42,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:42,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-26 22:37:42,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:42,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 323 proven. 739 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2020-10-26 22:37:43,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96018024] [2020-10-26 22:37:43,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:37:43,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:37:43,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495884015] [2020-10-26 22:37:43,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:37:43,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:37:43,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:37:43,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:37:43,063 INFO L87 Difference]: Start difference. First operand 23571 states and 27277 transitions. Second operand 8 states. [2020-10-26 22:37:47,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:37:47,528 INFO L93 Difference]: Finished difference Result 45262 states and 52502 transitions. [2020-10-26 22:37:47,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 22:37:47,530 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 711 [2020-10-26 22:37:47,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:37:47,577 INFO L225 Difference]: With dead ends: 45262 [2020-10-26 22:37:47,577 INFO L226 Difference]: Without dead ends: 24389 [2020-10-26 22:37:47,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-26 22:37:47,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24389 states. [2020-10-26 22:37:47,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24389 to 23947. [2020-10-26 22:37:47,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23947 states. [2020-10-26 22:37:47,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23947 states to 23947 states and 27627 transitions. [2020-10-26 22:37:47,922 INFO L78 Accepts]: Start accepts. Automaton has 23947 states and 27627 transitions. Word has length 711 [2020-10-26 22:37:47,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:37:47,923 INFO L481 AbstractCegarLoop]: Abstraction has 23947 states and 27627 transitions. [2020-10-26 22:37:47,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:37:47,923 INFO L276 IsEmpty]: Start isEmpty. Operand 23947 states and 27627 transitions. [2020-10-26 22:37:47,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2020-10-26 22:37:47,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:37:47,955 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, 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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:37:47,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 22:37:47,955 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:37:47,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:37:47,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1872188103, now seen corresponding path program 1 times [2020-10-26 22:37:47,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:37:47,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74508708] [2020-10-26 22:37:47,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:37:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:48,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:48,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:49,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:50,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:53,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:53,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 756 [2020-10-26 22:37:53,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:37:53,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-26 22:37:53,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:53,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:53,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-26 22:37:53,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-26 22:37:53,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:53,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:37:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:53,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:53,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:53,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:37:53,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:53,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:37:53,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:53,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:53,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:53,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:53,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:53,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:37:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:53,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:53,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:53,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:37:53,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:53,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 22:37:53,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:53,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:53,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:53,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:53,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:53,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:37:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:53,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:53,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:53,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:37:53,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:53,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 22:37:53,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:53,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:53,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:53,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:53,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:53,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:37:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:53,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:53,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:53,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-26 22:37:53,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:53,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 22:37:53,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:53,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:37:53,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:37:53,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:37:53,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:53,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-26 22:37:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:53,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:53,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:53,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:37:53,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:53,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 22:37:53,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:53,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:37:53,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:37:53,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:37:53,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:53,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-26 22:37:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:53,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:53,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:53,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:37:53,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:53,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 22:37:53,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:53,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:53,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-26 22:37:53,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:53,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:53,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-26 22:37:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:53,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:53,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:37:53,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:37:53,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:37:53,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 22:37:53,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:37:53,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:37:53,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-26 22:37:53,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:37:53,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:37:54,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 655 proven. 168 refuted. 0 times theorem prover too weak. 986 trivial. 0 not checked. [2020-10-26 22:37:54,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74508708] [2020-10-26 22:37:54,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:37:54,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:37:54,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259199539] [2020-10-26 22:37:54,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:37:54,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:37:54,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:37:54,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:37:54,168 INFO L87 Difference]: Start difference. First operand 23947 states and 27627 transitions. Second operand 7 states. [2020-10-26 22:37:58,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:37:58,533 INFO L93 Difference]: Finished difference Result 52142 states and 60505 transitions. [2020-10-26 22:37:58,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:37:58,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 734 [2020-10-26 22:37:58,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:37:58,616 INFO L225 Difference]: With dead ends: 52142 [2020-10-26 22:37:58,617 INFO L226 Difference]: Without dead ends: 28579 [2020-10-26 22:37:58,645 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 22:37:58,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28579 states. [2020-10-26 22:37:59,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28579 to 27763. [2020-10-26 22:37:59,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27763 states. [2020-10-26 22:37:59,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27763 states to 27763 states and 31987 transitions. [2020-10-26 22:37:59,060 INFO L78 Accepts]: Start accepts. Automaton has 27763 states and 31987 transitions. Word has length 734 [2020-10-26 22:37:59,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:37:59,061 INFO L481 AbstractCegarLoop]: Abstraction has 27763 states and 31987 transitions. [2020-10-26 22:37:59,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:37:59,061 INFO L276 IsEmpty]: Start isEmpty. Operand 27763 states and 31987 transitions. [2020-10-26 22:37:59,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2020-10-26 22:37:59,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:37:59,089 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, 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, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:37:59,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 22:37:59,090 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:37:59,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:37:59,090 INFO L82 PathProgramCache]: Analyzing trace with hash 206695446, now seen corresponding path program 1 times [2020-10-26 22:37:59,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:37:59,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848463229] [2020-10-26 22:37:59,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:37:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:37:59,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:59,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:37:59,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:04,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:04,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 777 [2020-10-26 22:38:04,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:38:04,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 22:38:04,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:04,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-26 22:38:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-26 22:38:04,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:04,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:38:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:04,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:04,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:04,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:38:04,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:04,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:38:04,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:38:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:38:04,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:04,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:38:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:04,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:04,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:04,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:38:04,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:04,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 22:38:04,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:04,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:38:04,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:04,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:38:04,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:04,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:38:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:04,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:04,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:04,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:38:04,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:04,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 22:38:04,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:38:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:38:04,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:04,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:38:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:04,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:04,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:04,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-26 22:38:04,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:04,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 22:38:04,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:04,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:38:04,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:38:04,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:38:04,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:04,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-26 22:38:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:04,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:04,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:04,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-26 22:38:04,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:04,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-26 22:38:04,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:04,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:38:04,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:38:04,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-26 22:38:04,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:04,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-10-26 22:38:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:05,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:05,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:05,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-26 22:38:05,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:05,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 22:38:05,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:05,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:38:05,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-26 22:38:05,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:38:05,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:05,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 603 [2020-10-26 22:38:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:38:05,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:38:05,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:38:05,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-26 22:38:05,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:38:05,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 22:38:05,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:38:05,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:38:05,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-26 22:38:05,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:38:05,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:38:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1826 backedges. 701 proven. 222 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2020-10-26 22:38:05,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848463229] [2020-10-26 22:38:05,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:38:05,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:38:05,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17948374] [2020-10-26 22:38:05,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:38:05,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:38:05,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:38:05,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:38:05,655 INFO L87 Difference]: Start difference. First operand 27763 states and 31987 transitions. Second operand 7 states.