/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=DEEPEST --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/array-tiling/pr2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:55:53,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:55:53,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:55:53,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:55:53,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:55:53,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:55:53,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:55:53,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:55:53,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:55:53,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:55:53,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:55:53,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:55:53,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:55:53,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:55:53,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:55:53,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:55:53,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:55:53,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:55:53,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:55:53,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:55:53,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:55:53,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:55:53,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:55:53,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:55:53,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:55:53,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:55:53,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:55:53,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:55:53,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:55:53,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:55:53,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:55:53,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:55:53,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:55:53,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:55:53,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:55:53,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:55:53,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:55:53,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:55:53,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:55:53,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:55:53,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:55:53,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 14:55:53,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:55:53,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:55:53,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:55:53,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:55:53,408 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:55:53,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:55:53,409 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:55:53,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:55:53,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:55:53,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:55:53,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:55:53,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:55:53,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:55:53,411 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:55:53,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:55:53,411 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:55:53,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:55:53,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:55:53,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:55:53,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:55:53,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:55:53,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:55:53,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:55:53,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:55:53,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:55:53,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:55:53,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:55:53,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:55:53,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:55:53,415 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:55:53,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:55:53,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:55:53,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:55:53,850 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:55:53,851 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:55:53,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pr2.c [2020-10-27 14:55:53,929 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a913ac89d/3fb87faa58de437bad1f89e66f01d75c/FLAGc415a0844 [2020-10-27 14:55:54,490 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:55:54,491 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/pr2.c [2020-10-27 14:55:54,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a913ac89d/3fb87faa58de437bad1f89e66f01d75c/FLAGc415a0844 [2020-10-27 14:55:54,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a913ac89d/3fb87faa58de437bad1f89e66f01d75c [2020-10-27 14:55:54,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:55:54,880 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:55:54,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:55:54,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:55:54,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:55:54,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:55:54" (1/1) ... [2020-10-27 14:55:54,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0c21eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:54, skipping insertion in model container [2020-10-27 14:55:54,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:55:54" (1/1) ... [2020-10-27 14:55:54,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:55:54,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:55:55,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:55:55,096 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:55:55,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:55:55,135 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:55:55,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:55 WrapperNode [2020-10-27 14:55:55,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:55:55,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:55:55,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:55:55,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:55:55,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:55" (1/1) ... [2020-10-27 14:55:55,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:55" (1/1) ... [2020-10-27 14:55:55,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:55" (1/1) ... [2020-10-27 14:55:55,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:55" (1/1) ... [2020-10-27 14:55:55,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:55" (1/1) ... [2020-10-27 14:55:55,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:55" (1/1) ... [2020-10-27 14:55:55,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:55" (1/1) ... [2020-10-27 14:55:55,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:55:55,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:55:55,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:55:55,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:55:55,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:55:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:55:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:55:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:55:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 14:55:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:55:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:55:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:55:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:55:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:55:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:55:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 14:55:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:55:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:55:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:55:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:55:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:55:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:55:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:55:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:55:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:55:55,633 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:55:55,634 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 14:55:55,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:55:55 BoogieIcfgContainer [2020-10-27 14:55:55,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:55:55,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:55:55,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:55:55,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:55:55,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:55:54" (1/3) ... [2020-10-27 14:55:55,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240ce2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:55:55, skipping insertion in model container [2020-10-27 14:55:55,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:55:55" (2/3) ... [2020-10-27 14:55:55,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240ce2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:55:55, skipping insertion in model container [2020-10-27 14:55:55,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:55:55" (3/3) ... [2020-10-27 14:55:55,679 INFO L111 eAbstractionObserver]: Analyzing ICFG pr2.c [2020-10-27 14:55:55,704 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:55:55,715 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:55:55,744 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:55:55,794 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:55:55,794 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:55:55,794 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:55:55,794 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:55:55,795 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:55:55,795 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:55:55,795 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:55:55,795 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:55:55,825 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-27 14:55:55,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 14:55:55,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:55,834 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] [2020-10-27 14:55:55,834 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:55,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:55,847 INFO L82 PathProgramCache]: Analyzing trace with hash -423145138, now seen corresponding path program 1 times [2020-10-27 14:55:55,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:55,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012918979] [2020-10-27 14:55:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:56,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:56,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:56,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:56,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:57,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:57,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:55:57,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:55:57,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1558 [2020-10-27 14:55:57,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:57,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:55:57,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 14:55:57,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:55:57,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:55:57,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:57,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:57,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:57,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:57,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:57,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:55:57,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:57,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:57,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:57,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:57,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:57,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:57,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:57,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:57,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:57,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:55:57,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:55:57,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:55:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:57,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:55:57,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012918979] [2020-10-27 14:55:57,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:55:57,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 14:55:57,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567899609] [2020-10-27 14:55:57,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:55:57,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:57,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:55:57,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:55:57,853 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 6 states. [2020-10-27 14:55:58,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:58,114 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2020-10-27 14:55:58,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:55:58,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-27 14:55:58,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:58,124 INFO L225 Difference]: With dead ends: 72 [2020-10-27 14:55:58,124 INFO L226 Difference]: Without dead ends: 37 [2020-10-27 14:55:58,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:55:58,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-27 14:55:58,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-10-27 14:55:58,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 14:55:58,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-27 14:55:58,173 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 23 [2020-10-27 14:55:58,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:58,173 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-27 14:55:58,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:55:58,174 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-27 14:55:58,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 14:55:58,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:58,175 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] [2020-10-27 14:55:58,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:55:58,176 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:58,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:58,177 INFO L82 PathProgramCache]: Analyzing trace with hash -952692850, now seen corresponding path program 1 times [2020-10-27 14:55:58,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:58,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616809771] [2020-10-27 14:55:58,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:58,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:58,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:58,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:58,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:58,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:55:58,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:55:58,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-27 14:55:58,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:58,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:55:58,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:55:58,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:55:58,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:55:58,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:58,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:58,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:58,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:58,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:58,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:55:58,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:58,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:58,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:58,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:58,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:58,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:58,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:58,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:58,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:58,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:58,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 14:55:58,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:58,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:55:58,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:58,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:55:58,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:58,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:55:58,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616809771] [2020-10-27 14:55:58,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:55:58,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 14:55:58,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547315756] [2020-10-27 14:55:58,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:55:58,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:58,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:55:58,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:55:58,903 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 9 states. [2020-10-27 14:55:59,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:55:59,332 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-27 14:55:59,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:55:59,333 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-27 14:55:59,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:55:59,337 INFO L225 Difference]: With dead ends: 65 [2020-10-27 14:55:59,337 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 14:55:59,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:55:59,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 14:55:59,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2020-10-27 14:55:59,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 14:55:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-27 14:55:59,353 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 23 [2020-10-27 14:55:59,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:55:59,353 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-27 14:55:59,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:55:59,353 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-27 14:55:59,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 14:55:59,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:55:59,355 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] [2020-10-27 14:55:59,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:55:59,355 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:55:59,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:55:59,356 INFO L82 PathProgramCache]: Analyzing trace with hash 410242629, now seen corresponding path program 1 times [2020-10-27 14:55:59,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:55:59,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642037278] [2020-10-27 14:55:59,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:55:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:59,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:59,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:59,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:59,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 14:55:59,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:55:59,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-27 14:55:59,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:59,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:55:59,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:55:59,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:55:59,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:59,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:55:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:59,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:59,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:59,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:55:59,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:59,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:55:59,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:59,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:59,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:59,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:59,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:59,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:55:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:55:59,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:55:59,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:55:59,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:55:59,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:55:59,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:55:59,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:55:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:55:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:55:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:55:59,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:55:59,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:55:59,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642037278] [2020-10-27 14:55:59,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:55:59,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:55:59,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964918399] [2020-10-27 14:55:59,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:55:59,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:55:59,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:55:59,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:55:59,846 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 10 states. [2020-10-27 14:56:00,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:00,369 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2020-10-27 14:56:00,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:56:00,370 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-10-27 14:56:00,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:00,372 INFO L225 Difference]: With dead ends: 70 [2020-10-27 14:56:00,372 INFO L226 Difference]: Without dead ends: 67 [2020-10-27 14:56:00,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:56:00,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-27 14:56:00,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 44. [2020-10-27 14:56:00,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 14:56:00,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2020-10-27 14:56:00,385 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 27 [2020-10-27 14:56:00,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:00,385 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2020-10-27 14:56:00,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:56:00,386 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-10-27 14:56:00,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 14:56:00,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:00,387 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] [2020-10-27 14:56:00,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:56:00,387 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:00,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:00,388 INFO L82 PathProgramCache]: Analyzing trace with hash 152077191, now seen corresponding path program 1 times [2020-10-27 14:56:00,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:00,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475883402] [2020-10-27 14:56:00,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:00,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:00,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:00,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 14:56:00,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:00,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 14:56:00,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:00,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:56:00,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:00,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 14:56:00,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:00,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:00,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:00,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:00,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:00,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:00,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:00,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:00,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:00,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:00,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:00,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:00,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:00,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:00,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:00,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:00,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:00,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:00,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:00,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:56:00,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475883402] [2020-10-27 14:56:00,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:00,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:56:00,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130930504] [2020-10-27 14:56:00,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:56:00,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:00,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:56:00,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:56:00,701 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 8 states. [2020-10-27 14:56:00,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:00,995 INFO L93 Difference]: Finished difference Result 87 states and 108 transitions. [2020-10-27 14:56:00,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:56:00,995 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-27 14:56:00,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:00,998 INFO L225 Difference]: With dead ends: 87 [2020-10-27 14:56:00,998 INFO L226 Difference]: Without dead ends: 70 [2020-10-27 14:56:00,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:56:00,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-27 14:56:01,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2020-10-27 14:56:01,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 14:56:01,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-10-27 14:56:01,011 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 27 [2020-10-27 14:56:01,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:01,011 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-10-27 14:56:01,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:56:01,012 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-10-27 14:56:01,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 14:56:01,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:01,013 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:56:01,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:56:01,013 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:01,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:01,014 INFO L82 PathProgramCache]: Analyzing trace with hash -607056194, now seen corresponding path program 1 times [2020-10-27 14:56:01,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:01,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941901116] [2020-10-27 14:56:01,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:01,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:01,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:01,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:01,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:01,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 14:56:01,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:56:01,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-27 14:56:01,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:56:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 14:56:01,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:01,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:01,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:01,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:01,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:01,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:01,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:56:01,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:01,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:01,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:01,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:01,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:01,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:01,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:01,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:56:01,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:01,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:01,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:56:01,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941901116] [2020-10-27 14:56:01,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:56:01,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:56:01,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025695829] [2020-10-27 14:56:01,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:56:01,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:01,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:56:01,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:01,308 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 4 states. [2020-10-27 14:56:01,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:01,412 INFO L93 Difference]: Finished difference Result 80 states and 99 transitions. [2020-10-27 14:56:01,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:56:01,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-27 14:56:01,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:01,413 INFO L225 Difference]: With dead ends: 80 [2020-10-27 14:56:01,414 INFO L226 Difference]: Without dead ends: 58 [2020-10-27 14:56:01,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:01,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-27 14:56:01,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-10-27 14:56:01,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 14:56:01,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-10-27 14:56:01,424 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 31 [2020-10-27 14:56:01,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:01,425 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-10-27 14:56:01,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:56:01,425 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-10-27 14:56:01,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 14:56:01,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:01,426 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:56:01,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:56:01,427 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:01,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:01,427 INFO L82 PathProgramCache]: Analyzing trace with hash 672177598, now seen corresponding path program 2 times [2020-10-27 14:56:01,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:01,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437354742] [2020-10-27 14:56:01,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:01,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:01,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:01,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:01,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:01,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 14:56:01,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:56:01,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-27 14:56:01,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:56:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 14:56:01,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:56:01,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:01,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:01,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:01,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:01,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:01,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:56:01,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:01,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:01,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:01,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:01,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:01,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:01,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:01,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:01,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:01,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:01,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:01,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:01,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:01,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:01,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:01,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:56:01,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:56:01,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437354742] [2020-10-27 14:56:01,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:56:01,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:56:01,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669783818] [2020-10-27 14:56:01,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:56:01,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:01,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:56:01,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:01,681 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 4 states. [2020-10-27 14:56:01,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:01,788 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2020-10-27 14:56:01,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:56:01,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-27 14:56:01,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:01,790 INFO L225 Difference]: With dead ends: 75 [2020-10-27 14:56:01,790 INFO L226 Difference]: Without dead ends: 53 [2020-10-27 14:56:01,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:01,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-27 14:56:01,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2020-10-27 14:56:01,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-27 14:56:01,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-10-27 14:56:01,800 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 31 [2020-10-27 14:56:01,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:01,800 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-10-27 14:56:01,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:56:01,801 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-10-27 14:56:01,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 14:56:01,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:01,802 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:56:01,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:56:01,802 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:01,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:01,803 INFO L82 PathProgramCache]: Analyzing trace with hash -346155451, now seen corresponding path program 1 times [2020-10-27 14:56:01,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:01,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090645641] [2020-10-27 14:56:01,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:01,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:01,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:02,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:02,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:56:02,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:56:02,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-27 14:56:02,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:56:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:56:02,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:02,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:02,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:02,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:02,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:02,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:02,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:02,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:02,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:02,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:02,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:02,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:02,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:02,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:02,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:02,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:02,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:02,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:02,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:02,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:02,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:02,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:02,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:02,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 14:56:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:02,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:02,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:02,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:02,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:02,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:02,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:02,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:02,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:02,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:02,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:02,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:56:02,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090645641] [2020-10-27 14:56:02,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:02,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:56:02,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806104484] [2020-10-27 14:56:02,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:56:02,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:02,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:56:02,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:56:02,286 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 8 states. [2020-10-27 14:56:02,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:02,635 INFO L93 Difference]: Finished difference Result 103 states and 126 transitions. [2020-10-27 14:56:02,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:56:02,641 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-27 14:56:02,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:02,643 INFO L225 Difference]: With dead ends: 103 [2020-10-27 14:56:02,643 INFO L226 Difference]: Without dead ends: 86 [2020-10-27 14:56:02,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:56:02,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-27 14:56:02,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 64. [2020-10-27 14:56:02,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 14:56:02,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2020-10-27 14:56:02,659 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 36 [2020-10-27 14:56:02,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:02,659 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2020-10-27 14:56:02,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:56:02,659 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2020-10-27 14:56:02,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 14:56:02,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:02,661 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:56:02,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:56:02,662 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:02,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:02,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1163803901, now seen corresponding path program 1 times [2020-10-27 14:56:02,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:02,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75524318] [2020-10-27 14:56:02,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:02,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:02,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:02,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:03,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:03,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:05,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:05,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:56:05,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:56:05,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3178 [2020-10-27 14:56:05,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:05,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:56:05,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:05,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:56:05,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:56:06,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:06,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:06,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:06,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:06,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:56:06,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:06,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:06,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:06,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:06,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:06,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:06,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:06,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:06,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:06,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:06,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:06,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:06,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 14:56:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:06,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:06,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:06,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:06,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 14:56:06,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:06,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:56:06,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:06,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:56:06,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:06,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:56:06,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75524318] [2020-10-27 14:56:06,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:06,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:56:06,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898199411] [2020-10-27 14:56:06,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:56:06,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:06,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:56:06,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:56:06,179 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand 13 states. [2020-10-27 14:56:07,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:07,032 INFO L93 Difference]: Finished difference Result 115 states and 143 transitions. [2020-10-27 14:56:07,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:56:07,032 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-27 14:56:07,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:07,034 INFO L225 Difference]: With dead ends: 115 [2020-10-27 14:56:07,034 INFO L226 Difference]: Without dead ends: 98 [2020-10-27 14:56:07,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:56:07,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-27 14:56:07,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 72. [2020-10-27 14:56:07,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-27 14:56:07,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2020-10-27 14:56:07,049 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 36 [2020-10-27 14:56:07,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:07,049 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2020-10-27 14:56:07,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:56:07,050 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2020-10-27 14:56:07,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 14:56:07,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:07,051 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:07,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:56:07,052 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:07,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:07,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1851299717, now seen corresponding path program 1 times [2020-10-27 14:56:07,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:07,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565900444] [2020-10-27 14:56:07,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:07,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:07,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:07,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:56:07,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:07,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 14:56:07,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:07,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:56:07,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:07,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 14:56:07,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:56:07,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:07,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:07,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:07,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:07,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:07,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:56:07,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:07,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:07,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:07,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:07,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:56:07,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:07,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:07,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:07,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:07,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:07,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:07,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:07,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:07,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:56:07,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 14:56:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:07,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:07,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:07,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:07,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:07,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:07,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:07,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:07,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:07,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:56:07,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565900444] [2020-10-27 14:56:07,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:07,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:56:07,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510663670] [2020-10-27 14:56:07,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:56:07,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:07,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:56:07,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:56:07,468 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand 10 states. [2020-10-27 14:56:07,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:07,951 INFO L93 Difference]: Finished difference Result 122 states and 151 transitions. [2020-10-27 14:56:07,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:56:07,952 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-27 14:56:07,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:07,954 INFO L225 Difference]: With dead ends: 122 [2020-10-27 14:56:07,954 INFO L226 Difference]: Without dead ends: 119 [2020-10-27 14:56:07,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:56:07,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-27 14:56:07,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 90. [2020-10-27 14:56:07,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-27 14:56:07,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 112 transitions. [2020-10-27 14:56:07,977 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 112 transitions. Word has length 36 [2020-10-27 14:56:07,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:07,978 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 112 transitions. [2020-10-27 14:56:07,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:56:07,978 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 112 transitions. [2020-10-27 14:56:07,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 14:56:07,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:07,984 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:56:07,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:56:07,984 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:07,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:07,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1544873388, now seen corresponding path program 1 times [2020-10-27 14:56:07,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:07,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622846590] [2020-10-27 14:56:07,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:08,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:08,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:08,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:08,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:08,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:56:08,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:56:08,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-27 14:56:08,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:08,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 14:56:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 14:56:08,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:08,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:08,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:08,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:08,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:08,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:08,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:08,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:08,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:08,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:08,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:08,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:08,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:08,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:08,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:08,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:08,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:08,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:08,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:08,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:08,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:08,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:08,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 14:56:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:08,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:08,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:08,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:08,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:08,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:08,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:08,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:08,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:56:08,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:08,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:08,323 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:56:08,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622846590] [2020-10-27 14:56:08,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:56:08,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:56:08,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779782835] [2020-10-27 14:56:08,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:56:08,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:08,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:56:08,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:08,326 INFO L87 Difference]: Start difference. First operand 90 states and 112 transitions. Second operand 4 states. [2020-10-27 14:56:08,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:08,433 INFO L93 Difference]: Finished difference Result 132 states and 164 transitions. [2020-10-27 14:56:08,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:56:08,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-27 14:56:08,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:08,435 INFO L225 Difference]: With dead ends: 132 [2020-10-27 14:56:08,435 INFO L226 Difference]: Without dead ends: 101 [2020-10-27 14:56:08,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:08,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-27 14:56:08,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 90. [2020-10-27 14:56:08,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-27 14:56:08,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2020-10-27 14:56:08,462 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 40 [2020-10-27 14:56:08,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:08,463 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2020-10-27 14:56:08,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:56:08,463 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2020-10-27 14:56:08,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 14:56:08,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:08,464 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:56:08,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:56:08,464 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:08,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:08,465 INFO L82 PathProgramCache]: Analyzing trace with hash -2066458964, now seen corresponding path program 2 times [2020-10-27 14:56:08,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:08,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127795684] [2020-10-27 14:56:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:08,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:08,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:08,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:08,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:08,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:56:08,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:56:08,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-27 14:56:08,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:08,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:08,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 14:56:08,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 14:56:08,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:08,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:08,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:08,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:08,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:08,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:08,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:08,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:08,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:08,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:08,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:08,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:08,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:08,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:08,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:08,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:08,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:08,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:08,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:08,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:08,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:08,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:08,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:08,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 14:56:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:08,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:08,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:08,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:08,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:08,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:08,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:08,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:08,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:56:08,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:08,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:56:08,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127795684] [2020-10-27 14:56:08,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:56:08,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:56:08,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119614752] [2020-10-27 14:56:08,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:56:08,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:08,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:56:08,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:08,762 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand 4 states. [2020-10-27 14:56:08,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:08,868 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2020-10-27 14:56:08,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:56:08,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-27 14:56:08,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:08,870 INFO L225 Difference]: With dead ends: 120 [2020-10-27 14:56:08,870 INFO L226 Difference]: Without dead ends: 89 [2020-10-27 14:56:08,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-27 14:56:08,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2020-10-27 14:56:08,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-27 14:56:08,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2020-10-27 14:56:08,883 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 40 [2020-10-27 14:56:08,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:08,884 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2020-10-27 14:56:08,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:56:08,884 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2020-10-27 14:56:08,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 14:56:08,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:08,885 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:08,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:56:08,885 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:08,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:08,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1736756805, now seen corresponding path program 2 times [2020-10-27 14:56:08,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:08,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644570693] [2020-10-27 14:56:08,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:08,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:08,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:09,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:09,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:09,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 14:56:09,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:56:09,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-10-27 14:56:09,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:09,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:56:09,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:56:09,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:56:09,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:10,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:10,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:10,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:10,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:10,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:10,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:10,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:10,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:10,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:10,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:10,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:10,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:10,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:10,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 14:56:10,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:10,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:56:10,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:10,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:56:10,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:10,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 14:56:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:10,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:10,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:10,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:10,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:10,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:10,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:10,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:10,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:10,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:10,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:56:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:10,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:10,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:10,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:10,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:10,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:10,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:10,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:10,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:10,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:10,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 14:56:10,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644570693] [2020-10-27 14:56:10,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:10,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:56:10,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010325981] [2020-10-27 14:56:10,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:56:10,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:10,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:56:10,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:56:10,212 INFO L87 Difference]: Start difference. First operand 78 states and 91 transitions. Second operand 12 states. [2020-10-27 14:56:10,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:10,929 INFO L93 Difference]: Finished difference Result 153 states and 177 transitions. [2020-10-27 14:56:10,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:56:10,930 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-27 14:56:10,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:10,931 INFO L225 Difference]: With dead ends: 153 [2020-10-27 14:56:10,931 INFO L226 Difference]: Without dead ends: 101 [2020-10-27 14:56:10,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:56:10,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-27 14:56:10,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 86. [2020-10-27 14:56:10,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-27 14:56:10,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 99 transitions. [2020-10-27 14:56:10,952 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 99 transitions. Word has length 45 [2020-10-27 14:56:10,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:10,953 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 99 transitions. [2020-10-27 14:56:10,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:56:10,953 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 99 transitions. [2020-10-27 14:56:10,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 14:56:10,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:10,954 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:56:10,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:56:10,954 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:10,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:10,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1124886084, now seen corresponding path program 3 times [2020-10-27 14:56:10,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:10,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972239082] [2020-10-27 14:56:10,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:10,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:13,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:13,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 14:56:13,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:56:13,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2214 [2020-10-27 14:56:13,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:13,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:56:13,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:13,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 14:56:13,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:13,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:13,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:13,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:13,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:13,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:13,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:13,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:13,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:13,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:13,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:13,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:13,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:13,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:13,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:13,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:13,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:13,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:13,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:13,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:13,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 14:56:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:13,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:13,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:13,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:13,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:13,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:56:13,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:56:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:56:13,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:13,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:56:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:13,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:13,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:13,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:13,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:13,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:56:13,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:13,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:13,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:13,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:13,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:13,570 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:56:13,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972239082] [2020-10-27 14:56:13,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:13,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:56:13,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736396254] [2020-10-27 14:56:13,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:56:13,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:13,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:56:13,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:56:13,573 INFO L87 Difference]: Start difference. First operand 86 states and 99 transitions. Second operand 16 states. [2020-10-27 14:56:14,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:14,469 INFO L93 Difference]: Finished difference Result 139 states and 164 transitions. [2020-10-27 14:56:14,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:56:14,470 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 49 [2020-10-27 14:56:14,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:14,471 INFO L225 Difference]: With dead ends: 139 [2020-10-27 14:56:14,471 INFO L226 Difference]: Without dead ends: 122 [2020-10-27 14:56:14,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:56:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-27 14:56:14,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 89. [2020-10-27 14:56:14,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-27 14:56:14,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 103 transitions. [2020-10-27 14:56:14,487 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 103 transitions. Word has length 49 [2020-10-27 14:56:14,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:14,488 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 103 transitions. [2020-10-27 14:56:14,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:56:14,488 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 103 transitions. [2020-10-27 14:56:14,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 14:56:14,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:14,489 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:56:14,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:56:14,489 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:14,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:14,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1258899590, now seen corresponding path program 4 times [2020-10-27 14:56:14,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:14,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587901097] [2020-10-27 14:56:14,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:14,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:14,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:14,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:14,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:14,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:15,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:15,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 14:56:15,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:56:15,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-10-27 14:56:15,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:56:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:56:15,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:15,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:15,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:15,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:15,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:15,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:15,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:15,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:15,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:15,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:15,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:15,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:15,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:15,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:15,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:15,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:15,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:15,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:15,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:15,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 14:56:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:15,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:15,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:15,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:15,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:15,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:15,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:15,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:15,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:15,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:15,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:15,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:56:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:15,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:15,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:15,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:15,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:15,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:15,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:15,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:15,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:15,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:15,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:15,398 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 14:56:15,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587901097] [2020-10-27 14:56:15,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:15,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:56:15,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094934946] [2020-10-27 14:56:15,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:56:15,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:15,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:56:15,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:56:15,400 INFO L87 Difference]: Start difference. First operand 89 states and 103 transitions. Second operand 13 states. [2020-10-27 14:56:16,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:16,197 INFO L93 Difference]: Finished difference Result 156 states and 182 transitions. [2020-10-27 14:56:16,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:56:16,198 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-10-27 14:56:16,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:16,200 INFO L225 Difference]: With dead ends: 156 [2020-10-27 14:56:16,200 INFO L226 Difference]: Without dead ends: 153 [2020-10-27 14:56:16,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:56:16,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-27 14:56:16,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 114. [2020-10-27 14:56:16,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-27 14:56:16,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-10-27 14:56:16,228 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 49 [2020-10-27 14:56:16,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:16,229 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-10-27 14:56:16,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:56:16,229 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-10-27 14:56:16,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 14:56:16,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:16,230 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:56:16,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:56:16,231 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:16,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:16,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1096464960, now seen corresponding path program 1 times [2020-10-27 14:56:16,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:16,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468817048] [2020-10-27 14:56:16,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:16,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:16,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:16,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 14:56:16,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:16,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-27 14:56:16,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:16,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:56:16,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:16,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 14:56:16,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:16,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:16,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:16,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:16,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:16,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:16,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:16,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:16,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:16,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:16,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:16,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:16,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:16,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:16,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:16,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:16,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:16,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:16,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:16,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:16,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:16,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:16,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:16,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 14:56:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:16,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:16,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:16,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:16,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:16,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:16,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:16,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:16,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:16,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:16,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:16,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:56:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:16,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:16,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:16,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:16,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:16,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:16,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:16,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:16,654 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 14:56:16,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468817048] [2020-10-27 14:56:16,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:16,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:56:16,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102031965] [2020-10-27 14:56:16,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:56:16,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:16,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:56:16,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:56:16,657 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 11 states. [2020-10-27 14:56:17,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:17,256 INFO L93 Difference]: Finished difference Result 176 states and 205 transitions. [2020-10-27 14:56:17,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:56:17,257 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-10-27 14:56:17,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:17,259 INFO L225 Difference]: With dead ends: 176 [2020-10-27 14:56:17,259 INFO L226 Difference]: Without dead ends: 159 [2020-10-27 14:56:17,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:56:17,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-27 14:56:17,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 116. [2020-10-27 14:56:17,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 14:56:17,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions. [2020-10-27 14:56:17,288 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 49 [2020-10-27 14:56:17,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:17,288 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 135 transitions. [2020-10-27 14:56:17,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:56:17,288 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions. [2020-10-27 14:56:17,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 14:56:17,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:17,291 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:17,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:56:17,292 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:17,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:17,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1332330322, now seen corresponding path program 5 times [2020-10-27 14:56:17,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:17,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344842418] [2020-10-27 14:56:17,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:17,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:18,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:18,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 14:56:18,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:56:18,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 876 [2020-10-27 14:56:18,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:18,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:56:18,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:18,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:56:18,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:18,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:18,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:18,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:18,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:18,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:18,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:18,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:18,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:18,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:18,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:18,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:18,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:18,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:18,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:18,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:18,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:18,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:18,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:18,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:18,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:18,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:18,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:18,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 14:56:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:18,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:18,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:18,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:18,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:18,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:18,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:18,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:18,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:18,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:56:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:18,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:18,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:18,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:18,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:18,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:18,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:18,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:18,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:18,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:18,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:18,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:56:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:18,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:18,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:18,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:18,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:18,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:18,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:18,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:18,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:18,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:18,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:18,370 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 14:56:18,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344842418] [2020-10-27 14:56:18,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:18,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:56:18,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195864086] [2020-10-27 14:56:18,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:56:18,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:18,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:56:18,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:56:18,372 INFO L87 Difference]: Start difference. First operand 116 states and 135 transitions. Second operand 11 states. [2020-10-27 14:56:19,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:19,111 INFO L93 Difference]: Finished difference Result 188 states and 221 transitions. [2020-10-27 14:56:19,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:56:19,112 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-27 14:56:19,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:19,114 INFO L225 Difference]: With dead ends: 188 [2020-10-27 14:56:19,114 INFO L226 Difference]: Without dead ends: 171 [2020-10-27 14:56:19,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:56:19,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-27 14:56:19,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 127. [2020-10-27 14:56:19,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-27 14:56:19,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 150 transitions. [2020-10-27 14:56:19,139 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 150 transitions. Word has length 58 [2020-10-27 14:56:19,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:19,139 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 150 transitions. [2020-10-27 14:56:19,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:56:19,139 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 150 transitions. [2020-10-27 14:56:19,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 14:56:19,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:19,140 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:19,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:56:19,141 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:19,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:19,141 INFO L82 PathProgramCache]: Analyzing trace with hash -2113543126, now seen corresponding path program 2 times [2020-10-27 14:56:19,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:19,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430230818] [2020-10-27 14:56:19,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:19,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:20,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:20,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:24,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:24,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 14:56:24,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:56:24,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 14:56:24,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:24,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:56:24,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:24,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 14:56:24,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:24,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:24,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:24,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:24,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:24,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:24,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:24,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:24,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:24,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:24,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:24,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:24,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:24,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:24,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:24,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:24,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:24,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:24,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:24,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:24,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:24,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:24,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:24,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 14:56:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:24,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:24,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:24,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:24,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:24,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:24,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:24,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:24,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:56:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:24,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:24,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:24,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:24,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:24,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:24,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:24,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:24,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:56:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:24,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:24,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:24,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:24,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:24,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:24,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:24,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:24,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:24,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:24,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 14:56:24,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430230818] [2020-10-27 14:56:24,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:24,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:56:24,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611549197] [2020-10-27 14:56:24,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:56:24,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:24,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:56:24,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:56:24,415 INFO L87 Difference]: Start difference. First operand 127 states and 150 transitions. Second operand 13 states. [2020-10-27 14:56:25,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:25,360 INFO L93 Difference]: Finished difference Result 185 states and 218 transitions. [2020-10-27 14:56:25,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:56:25,361 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 58 [2020-10-27 14:56:25,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:25,363 INFO L225 Difference]: With dead ends: 185 [2020-10-27 14:56:25,363 INFO L226 Difference]: Without dead ends: 182 [2020-10-27 14:56:25,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:56:25,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-27 14:56:25,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 147. [2020-10-27 14:56:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-27 14:56:25,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2020-10-27 14:56:25,396 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 58 [2020-10-27 14:56:25,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:25,397 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2020-10-27 14:56:25,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:56:25,397 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2020-10-27 14:56:25,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 14:56:25,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:25,398 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:25,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:56:25,399 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:25,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:25,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1073433084, now seen corresponding path program 6 times [2020-10-27 14:56:25,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:25,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766857888] [2020-10-27 14:56:25,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:25,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:25,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:25,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:25,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:25,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:25,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:27,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 14:56:27,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:56:27,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1796 [2020-10-27 14:56:27,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:27,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:56:27,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:56:27,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:56:27,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:27,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:27,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:27,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:27,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:27,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:56:27,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:27,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:27,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:27,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:27,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:27,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:27,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:27,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:27,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:27,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:56:27,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:27,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:56:27,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:27,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:56:27,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:27,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 14:56:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:27,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:27,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:27,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:27,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:27,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:27,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:27,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:27,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:27,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:27,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:56:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:27,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:27,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:27,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:27,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:27,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:27,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:27,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:27,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:27,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:27,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:56:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:27,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:27,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:27,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:27,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:27,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:27,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:27,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:27,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:27,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:27,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 14:56:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:27,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:27,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:27,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:27,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:27,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:27,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:27,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:27,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:27,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 14:56:27,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766857888] [2020-10-27 14:56:27,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:27,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:56:27,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568151272] [2020-10-27 14:56:27,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:56:27,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:27,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:56:27,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:56:27,586 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand 15 states. [2020-10-27 14:56:28,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:28,434 INFO L93 Difference]: Finished difference Result 288 states and 339 transitions. [2020-10-27 14:56:28,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:56:28,434 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2020-10-27 14:56:28,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:28,436 INFO L225 Difference]: With dead ends: 288 [2020-10-27 14:56:28,436 INFO L226 Difference]: Without dead ends: 175 [2020-10-27 14:56:28,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:56:28,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-27 14:56:28,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 163. [2020-10-27 14:56:28,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-27 14:56:28,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 190 transitions. [2020-10-27 14:56:28,464 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 190 transitions. Word has length 67 [2020-10-27 14:56:28,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:28,464 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 190 transitions. [2020-10-27 14:56:28,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:56:28,465 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 190 transitions. [2020-10-27 14:56:28,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 14:56:28,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:28,466 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:28,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:56:28,466 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:28,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:28,467 INFO L82 PathProgramCache]: Analyzing trace with hash -2139221453, now seen corresponding path program 7 times [2020-10-27 14:56:28,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:28,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808349908] [2020-10-27 14:56:28,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:28,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:29,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:29,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:29,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:33,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:33,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 14:56:33,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 14:56:33,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:56:33,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:33,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:56:33,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:33,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 14:56:33,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:33,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:33,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:33,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:33,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:33,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:33,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:33,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:33,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:33,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:33,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:33,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:33,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:33,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:33,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:33,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:33,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:33,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:33,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:33,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:33,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:33,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:33,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:33,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:56:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:33,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:33,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:33,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:33,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:33,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:33,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:33,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:33,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:56:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:33,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:33,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:33,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:33,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:33,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:33,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:33,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:33,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:33,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:33,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:33,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:56:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:33,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:33,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:33,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:33,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:33,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:33,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:33,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:33,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:33,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:33,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:33,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 14:56:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:33,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:33,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:33,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:33,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:33,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:33,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:33,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:33,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:33,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:33,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 53 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 14:56:33,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808349908] [2020-10-27 14:56:33,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:33,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:56:33,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498582065] [2020-10-27 14:56:33,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:56:33,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:33,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:56:33,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:56:33,906 INFO L87 Difference]: Start difference. First operand 163 states and 190 transitions. Second operand 17 states. [2020-10-27 14:56:35,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:35,167 INFO L93 Difference]: Finished difference Result 240 states and 283 transitions. [2020-10-27 14:56:35,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:56:35,168 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 71 [2020-10-27 14:56:35,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:35,170 INFO L225 Difference]: With dead ends: 240 [2020-10-27 14:56:35,170 INFO L226 Difference]: Without dead ends: 223 [2020-10-27 14:56:35,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:56:35,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-27 14:56:35,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 177. [2020-10-27 14:56:35,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-27 14:56:35,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 209 transitions. [2020-10-27 14:56:35,200 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 209 transitions. Word has length 71 [2020-10-27 14:56:35,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:35,201 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 209 transitions. [2020-10-27 14:56:35,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:56:35,201 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 209 transitions. [2020-10-27 14:56:35,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 14:56:35,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:35,202 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:35,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:56:35,203 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:35,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:35,203 INFO L82 PathProgramCache]: Analyzing trace with hash -2025088465, now seen corresponding path program 8 times [2020-10-27 14:56:35,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:35,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433448277] [2020-10-27 14:56:35,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:35,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:35,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:35,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:35,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:35,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:35,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:35,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:35,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:35,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:35,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:36,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:36,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 14:56:36,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 14:56:36,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-10-27 14:56:36,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:36,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:56:36,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:36,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 14:56:36,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:36,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:36,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:36,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:36,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:36,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:36,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:56:36,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:36,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:36,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:36,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:36,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:36,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:36,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:36,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:36,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:36,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:36,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:36,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:36,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:36,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:36,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:36,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:36,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:56:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:36,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:36,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:36,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:36,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:36,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:36,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:36,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:36,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:56:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:36,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:36,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:36,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:36,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:36,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:36,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:36,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:36,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:36,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:56:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:36,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:36,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:36,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:36,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:36,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:36,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:36,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:36,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:36,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:36,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:36,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 14:56:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:36,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:36,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:36,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:36,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:36,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:36,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:36,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:36,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:36,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:36,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:36,564 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 8 proven. 57 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 14:56:36,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433448277] [2020-10-27 14:56:36,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:36,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:56:36,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496945825] [2020-10-27 14:56:36,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:56:36,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:36,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:56:36,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:56:36,566 INFO L87 Difference]: Start difference. First operand 177 states and 209 transitions. Second operand 16 states. [2020-10-27 14:56:38,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:38,155 INFO L93 Difference]: Finished difference Result 260 states and 307 transitions. [2020-10-27 14:56:38,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 14:56:38,156 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-10-27 14:56:38,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:38,158 INFO L225 Difference]: With dead ends: 260 [2020-10-27 14:56:38,158 INFO L226 Difference]: Without dead ends: 257 [2020-10-27 14:56:38,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=169, Invalid=1313, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:56:38,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-27 14:56:38,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 196. [2020-10-27 14:56:38,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-27 14:56:38,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 232 transitions. [2020-10-27 14:56:38,204 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 232 transitions. Word has length 71 [2020-10-27 14:56:38,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:38,204 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 232 transitions. [2020-10-27 14:56:38,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:56:38,204 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 232 transitions. [2020-10-27 14:56:38,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 14:56:38,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:38,206 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:38,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:56:38,207 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:38,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:38,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1362430983, now seen corresponding path program 2 times [2020-10-27 14:56:38,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:38,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510086353] [2020-10-27 14:56:38,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:38,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:38,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:38,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 14:56:38,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:38,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-27 14:56:38,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:38,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:56:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 14:56:38,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:38,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:38,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:38,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:38,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:38,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:38,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:56:38,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:38,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:38,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:38,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:38,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:38,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:38,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:38,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:38,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:38,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:38,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:38,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:38,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:38,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:38,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:38,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:38,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:56:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:38,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:38,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:38,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:38,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:38,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:38,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:38,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:38,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:38,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:38,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:38,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:56:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:38,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:38,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:38,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:38,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:38,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:38,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:38,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:38,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:38,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:38,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:38,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:56:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:38,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:38,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:38,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:38,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:38,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:38,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:38,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:38,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:38,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:38,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 14:56:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:38,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:38,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:38,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:38,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:38,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:38,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:38,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:38,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:38,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:38,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:38,792 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 53 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 14:56:38,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510086353] [2020-10-27 14:56:38,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:38,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:56:38,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81009656] [2020-10-27 14:56:38,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:56:38,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:38,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:56:38,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:56:38,796 INFO L87 Difference]: Start difference. First operand 196 states and 232 transitions. Second operand 14 states. [2020-10-27 14:56:40,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:40,034 INFO L93 Difference]: Finished difference Result 280 states and 330 transitions. [2020-10-27 14:56:40,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:56:40,035 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-10-27 14:56:40,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:40,038 INFO L225 Difference]: With dead ends: 280 [2020-10-27 14:56:40,038 INFO L226 Difference]: Without dead ends: 263 [2020-10-27 14:56:40,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:56:40,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-27 14:56:40,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 187. [2020-10-27 14:56:40,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-27 14:56:40,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 219 transitions. [2020-10-27 14:56:40,075 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 219 transitions. Word has length 71 [2020-10-27 14:56:40,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:40,076 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 219 transitions. [2020-10-27 14:56:40,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:56:40,076 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 219 transitions. [2020-10-27 14:56:40,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 14:56:40,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:40,077 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:40,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:56:40,078 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:40,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:40,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1131830807, now seen corresponding path program 9 times [2020-10-27 14:56:40,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:40,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302098070] [2020-10-27 14:56:40,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:40,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:40,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:40,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:40,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:40,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:40,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:40,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:40,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:40,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:40,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:41,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:41,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 14:56:41,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 14:56:41,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-10-27 14:56:41,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:41,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:56:41,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:41,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 14:56:41,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:41,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:41,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:41,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:41,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:41,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:41,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:41,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:41,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:41,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:41,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:41,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:41,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:41,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:41,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:41,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:41,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:41,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:41,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:41,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:41,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:56:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:41,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:41,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:41,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:41,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:41,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:41,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:41,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:41,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:56:41,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:56:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:41,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:41,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:41,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:41,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:41,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:41,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:41,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:41,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:56:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:41,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:41,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:41,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:41,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:41,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:41,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:41,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:41,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:41,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:41,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 14:56:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:41,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:41,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:41,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:41,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:41,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:41,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:41,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:41,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:41,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:41,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:41,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:56:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:41,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:41,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:41,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:41,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:41,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:41,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:41,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 15 proven. 75 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-27 14:56:41,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302098070] [2020-10-27 14:56:41,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:41,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:56:41,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095303418] [2020-10-27 14:56:41,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:56:41,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:41,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:56:41,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:56:41,381 INFO L87 Difference]: Start difference. First operand 187 states and 219 transitions. Second operand 14 states. [2020-10-27 14:56:42,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:42,882 INFO L93 Difference]: Finished difference Result 265 states and 312 transitions. [2020-10-27 14:56:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:56:42,886 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2020-10-27 14:56:42,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:42,888 INFO L225 Difference]: With dead ends: 265 [2020-10-27 14:56:42,888 INFO L226 Difference]: Without dead ends: 248 [2020-10-27 14:56:42,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=160, Invalid=1172, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:56:42,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-27 14:56:42,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 198. [2020-10-27 14:56:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-27 14:56:42,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 234 transitions. [2020-10-27 14:56:42,921 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 234 transitions. Word has length 80 [2020-10-27 14:56:42,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:42,922 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 234 transitions. [2020-10-27 14:56:42,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:56:42,922 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 234 transitions. [2020-10-27 14:56:42,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 14:56:42,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:42,924 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:42,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:56:42,924 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:42,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:42,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1319936593, now seen corresponding path program 3 times [2020-10-27 14:56:42,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:42,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560778450] [2020-10-27 14:56:42,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:42,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:42,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:43,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:43,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:43,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:43,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:43,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:43,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:43,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:47,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:47,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 14:56:47,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:56:47,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:56:47,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:47,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:56:47,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:47,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 14:56:47,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:48,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:48,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:48,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:48,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:48,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:56:48,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:48,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:48,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:48,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:48,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:48,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:56:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:48,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:48,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:48,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:56:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:48,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:48,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:48,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:48,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:56:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:48,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:48,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:48,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:48,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:48,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 14:56:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:48,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:48,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:48,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:56:48,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:56:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:48,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:48,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:48,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:48,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:48,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:56:48,338 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 80 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-27 14:56:48,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560778450] [2020-10-27 14:56:48,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:48,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:56:48,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175356857] [2020-10-27 14:56:48,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:56:48,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:48,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:56:48,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:56:48,347 INFO L87 Difference]: Start difference. First operand 198 states and 234 transitions. Second operand 16 states. [2020-10-27 14:56:50,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:50,130 INFO L93 Difference]: Finished difference Result 262 states and 309 transitions. [2020-10-27 14:56:50,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:56:50,130 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 80 [2020-10-27 14:56:50,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:50,133 INFO L225 Difference]: With dead ends: 262 [2020-10-27 14:56:50,133 INFO L226 Difference]: Without dead ends: 259 [2020-10-27 14:56:50,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=179, Invalid=1543, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:56:50,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-27 14:56:50,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 213. [2020-10-27 14:56:50,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-27 14:56:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 252 transitions. [2020-10-27 14:56:50,172 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 252 transitions. Word has length 80 [2020-10-27 14:56:50,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:50,172 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 252 transitions. [2020-10-27 14:56:50,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:56:50,172 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 252 transitions. [2020-10-27 14:56:50,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 14:56:50,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:50,174 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:50,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:56:50,175 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:50,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:50,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1829450419, now seen corresponding path program 10 times [2020-10-27 14:56:50,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:50,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791240542] [2020-10-27 14:56:50,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:50,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:52,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:52,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 14:56:52,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 14:56:52,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2520 [2020-10-27 14:56:52,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:56:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:56:52,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 14:56:52,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:53,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:53,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:53,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:53,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:53,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:53,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:53,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:53,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:53,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:53,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:53,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:53,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:53,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:53,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:53,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 14:56:53,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:53,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:56:53,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:53,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:56:53,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:53,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:56:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:53,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:53,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:53,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:53,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:53,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:56:53,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:53,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:53,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:53,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:53,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:53,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:56:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:53,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:53,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:53,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:53,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:53,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:53,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:53,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:53,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:53,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:53,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:56:53,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:56:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:53,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:53,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:53,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:53,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:53,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:56:53,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:53,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:53,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 14:56:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:53,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:53,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:53,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:53,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:53,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:56:53,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:53,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:53,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:53,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:53,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:53,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:56:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:53,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:53,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:53,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:53,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:53,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:53,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:53,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:53,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:53,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:53,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:53,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:56:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:53,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:53,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:53,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:53,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:53,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:53,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:53,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:53,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:53,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:53,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 105 proven. 15 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-27 14:56:53,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791240542] [2020-10-27 14:56:53,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:53,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:56:53,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296428596] [2020-10-27 14:56:53,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:56:53,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:53,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:56:53,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:56:53,366 INFO L87 Difference]: Start difference. First operand 213 states and 252 transitions. Second operand 18 states. [2020-10-27 14:56:54,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:54,619 INFO L93 Difference]: Finished difference Result 404 states and 479 transitions. [2020-10-27 14:56:54,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:56:54,619 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 89 [2020-10-27 14:56:54,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:54,621 INFO L225 Difference]: With dead ends: 404 [2020-10-27 14:56:54,621 INFO L226 Difference]: Without dead ends: 241 [2020-10-27 14:56:54,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=217, Invalid=973, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:56:54,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-27 14:56:54,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 229. [2020-10-27 14:56:54,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-27 14:56:54,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 268 transitions. [2020-10-27 14:56:54,658 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 268 transitions. Word has length 89 [2020-10-27 14:56:54,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:54,658 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 268 transitions. [2020-10-27 14:56:54,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:56:54,658 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 268 transitions. [2020-10-27 14:56:54,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 14:56:54,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:54,660 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:54,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:56:54,660 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:54,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:54,661 INFO L82 PathProgramCache]: Analyzing trace with hash 812640170, now seen corresponding path program 11 times [2020-10-27 14:56:54,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:54,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296464655] [2020-10-27 14:56:54,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:54,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:54,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:54,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:54,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:54,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:54,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:54,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:54,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:54,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:54,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:55,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:55,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:55,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:55,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:55,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:55,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:55,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:55,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:56,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:56,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:56,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:56,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:58,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:59,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:59,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 14:56:59,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-27 14:56:59,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:56:59,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:59,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:56:59,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:59,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 14:56:59,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:00,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:57:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:00,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:00,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:00,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:57:00,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:00,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:00,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:00,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:00,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:00,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:00,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:00,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:57:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:00,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:00,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:00,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:00,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:00,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:00,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:00,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:00,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:00,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:00,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:00,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:57:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:00,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:00,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:00,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:00,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:00,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:00,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:00,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:00,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:00,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:57:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:00,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:00,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:00,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:00,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:00,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:00,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:00,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:00,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:00,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:00,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:00,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:57:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:00,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:00,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:00,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:00,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:00,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:00,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:00,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:00,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:00,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:00,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:00,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:57:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:00,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:00,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:00,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:00,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:00,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:00,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:00,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:00,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:00,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:00,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:00,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:57:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:00,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:00,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:00,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:00,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:00,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:00,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:00,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:00,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:00,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:00,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:00,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:57:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:00,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:00,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:00,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:00,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:00,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:00,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:00,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:00,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:00,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:00,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 12 proven. 121 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-27 14:57:00,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296464655] [2020-10-27 14:57:00,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:57:00,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:57:00,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215148954] [2020-10-27 14:57:00,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:57:00,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:57:00,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:57:00,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:57:00,100 INFO L87 Difference]: Start difference. First operand 229 states and 268 transitions. Second operand 19 states. [2020-10-27 14:57:02,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:57:02,629 INFO L93 Difference]: Finished difference Result 342 states and 405 transitions. [2020-10-27 14:57:02,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-27 14:57:02,629 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 93 [2020-10-27 14:57:02,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:57:02,632 INFO L225 Difference]: With dead ends: 342 [2020-10-27 14:57:02,632 INFO L226 Difference]: Without dead ends: 339 [2020-10-27 14:57:02,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=274, Invalid=2588, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 14:57:02,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-10-27 14:57:02,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 286. [2020-10-27 14:57:02,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-27 14:57:02,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 340 transitions. [2020-10-27 14:57:02,686 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 340 transitions. Word has length 93 [2020-10-27 14:57:02,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:57:02,687 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 340 transitions. [2020-10-27 14:57:02,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:57:02,687 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 340 transitions. [2020-10-27 14:57:02,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 14:57:02,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:57:02,689 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:57:02,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:57:02,689 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:57:02,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:57:02,689 INFO L82 PathProgramCache]: Analyzing trace with hash -2090106702, now seen corresponding path program 3 times [2020-10-27 14:57:02,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:57:02,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387636283] [2020-10-27 14:57:02,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:57:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:02,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:03,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:03,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 14:57:03,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:03,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-27 14:57:03,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:03,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:57:03,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:57:03,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 14:57:03,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:03,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:57:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:03,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:03,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:03,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:57:03,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:03,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:03,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:03,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:03,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:03,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:03,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:03,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:57:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:03,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:03,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:03,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:03,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:03,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:57:03,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:03,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:03,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:57:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:03,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:03,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:03,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:03,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:03,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:03,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:03,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:03,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:03,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:03,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:03,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:57:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:03,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:03,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:03,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:03,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:03,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:03,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:03,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:03,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:57:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:03,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:03,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:03,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:03,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:03,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:03,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:03,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:03,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:03,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:03,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:03,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:57:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:03,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:03,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:03,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:03,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:03,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:03,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:03,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:03,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:03,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:03,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:03,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:57:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:03,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:03,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:03,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:03,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:03,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:03,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:03,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:03,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:03,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:03,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:03,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:57:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:03,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:03,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:03,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:03,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:03,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:03,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:03,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:03,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:03,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:03,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 18 proven. 115 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-27 14:57:03,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387636283] [2020-10-27 14:57:03,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:57:03,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:57:03,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670910955] [2020-10-27 14:57:03,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:57:03,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:57:03,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:57:03,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:57:03,421 INFO L87 Difference]: Start difference. First operand 286 states and 340 transitions. Second operand 17 states. [2020-10-27 14:57:05,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:57:05,583 INFO L93 Difference]: Finished difference Result 362 states and 428 transitions. [2020-10-27 14:57:05,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-27 14:57:05,584 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 93 [2020-10-27 14:57:05,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:57:05,587 INFO L225 Difference]: With dead ends: 362 [2020-10-27 14:57:05,587 INFO L226 Difference]: Without dead ends: 345 [2020-10-27 14:57:05,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=255, Invalid=2097, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 14:57:05,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-27 14:57:05,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 291. [2020-10-27 14:57:05,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-10-27 14:57:05,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 346 transitions. [2020-10-27 14:57:05,644 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 346 transitions. Word has length 93 [2020-10-27 14:57:05,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:57:05,644 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 346 transitions. [2020-10-27 14:57:05,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:57:05,644 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 346 transitions. [2020-10-27 14:57:05,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 14:57:05,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:57:05,646 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:57:05,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:57:05,646 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:57:05,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:57:05,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1679311232, now seen corresponding path program 12 times [2020-10-27 14:57:05,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:57:05,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96870412] [2020-10-27 14:57:05,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:57:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:05,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:05,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:05,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:05,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:05,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:05,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:05,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:05,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:05,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:05,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:05,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:05,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:06,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:06,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:06,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:06,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:06,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 14:57:07,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 14:57:07,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1903 [2020-10-27 14:57:07,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:57:07,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:57:07,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 14:57:07,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:57:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:57:07,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:07,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:07,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:07,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:57:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:07,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:07,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:57:07,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:07,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:07,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:07,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:57:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:07,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:07,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:07,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:07,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:07,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:07,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:57:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:07,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:07,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:07,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:07,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:57:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:07,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:07,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:07,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:07,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:57:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:07,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:07,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:07,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:07,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:07,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:07,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:57:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:07,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:07,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:07,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:07,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:57:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:07,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:07,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:07,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:07,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:07,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:07,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:57:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:07,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:07,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:07,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:07,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:07,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:07,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:07,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:07,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:07,939 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 21 proven. 147 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-27 14:57:07,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96870412] [2020-10-27 14:57:07,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:57:07,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:57:07,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857486276] [2020-10-27 14:57:07,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:57:07,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:57:07,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:57:07,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:57:07,941 INFO L87 Difference]: Start difference. First operand 291 states and 346 transitions. Second operand 17 states. [2020-10-27 14:57:10,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:57:10,350 INFO L93 Difference]: Finished difference Result 379 states and 450 transitions. [2020-10-27 14:57:10,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-27 14:57:10,351 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 102 [2020-10-27 14:57:10,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:57:10,354 INFO L225 Difference]: With dead ends: 379 [2020-10-27 14:57:10,354 INFO L226 Difference]: Without dead ends: 362 [2020-10-27 14:57:10,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=263, Invalid=2389, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 14:57:10,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-27 14:57:10,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 302. [2020-10-27 14:57:10,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-10-27 14:57:10,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 361 transitions. [2020-10-27 14:57:10,409 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 361 transitions. Word has length 102 [2020-10-27 14:57:10,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:57:10,410 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 361 transitions. [2020-10-27 14:57:10,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:57:10,410 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 361 transitions. [2020-10-27 14:57:10,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 14:57:10,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:57:10,424 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:57:10,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:57:10,424 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:57:10,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:57:10,425 INFO L82 PathProgramCache]: Analyzing trace with hash -344871560, now seen corresponding path program 4 times [2020-10-27 14:57:10,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:57:10,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640120301] [2020-10-27 14:57:10,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:57:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:10,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:10,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:10,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:10,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:10,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:10,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:10,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:11,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:11,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:11,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:12,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:15,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:15,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 14:57:15,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 14:57:15,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:57:15,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:57:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:57:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 14:57:15,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:15,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:57:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:15,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:15,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:15,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:57:15,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:15,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:15,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:15,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:15,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:57:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:15,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:15,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:15,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:15,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:15,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:15,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:15,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:15,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:15,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:15,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:15,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:57:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:15,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:15,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:15,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:15,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:15,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:15,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:15,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:15,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:57:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:15,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:15,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:15,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:15,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:15,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:15,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:15,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:15,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:15,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:15,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:15,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:57:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:15,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:15,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:15,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:15,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:15,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:15,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:15,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:15,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:15,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:15,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:15,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:57:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:15,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:15,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:15,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:15,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:15,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:15,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:15,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:15,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:15,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:15,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:15,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:57:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:15,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:15,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:15,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:15,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:15,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:15,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:15,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:15,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:15,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:15,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:57:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:15,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:15,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:15,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:15,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:15,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:15,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:15,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:15,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:15,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:15,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:15,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:57:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:15,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:15,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:15,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:15,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:15,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:15,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:15,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:15,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:15,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 14 proven. 154 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-27 14:57:15,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640120301] [2020-10-27 14:57:15,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:57:15,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:57:15,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999265099] [2020-10-27 14:57:15,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:57:15,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:57:15,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:57:15,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:57:15,869 INFO L87 Difference]: Start difference. First operand 302 states and 361 transitions. Second operand 19 states. [2020-10-27 14:57:18,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:57:18,674 INFO L93 Difference]: Finished difference Result 376 states and 447 transitions. [2020-10-27 14:57:18,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-27 14:57:18,675 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 102 [2020-10-27 14:57:18,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:57:18,679 INFO L225 Difference]: With dead ends: 376 [2020-10-27 14:57:18,679 INFO L226 Difference]: Without dead ends: 373 [2020-10-27 14:57:18,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=282, Invalid=2910, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 14:57:18,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-27 14:57:18,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 317. [2020-10-27 14:57:18,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-27 14:57:18,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 379 transitions. [2020-10-27 14:57:18,741 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 379 transitions. Word has length 102 [2020-10-27 14:57:18,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:57:18,742 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 379 transitions. [2020-10-27 14:57:18,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:57:18,742 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 379 transitions. [2020-10-27 14:57:18,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 14:57:18,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:57:18,744 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:57:18,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:57:18,744 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:57:18,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:57:18,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1069205398, now seen corresponding path program 13 times [2020-10-27 14:57:18,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:57:18,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195563065] [2020-10-27 14:57:18,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:57:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:18,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:18,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:18,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:18,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:18,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:18,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:18,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:18,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:18,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:18,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:18,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:18,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:18,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:19,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:19,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:19,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:19,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:19,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:20,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:20,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 14:57:20,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 14:57:20,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2124 [2020-10-27 14:57:20,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:57:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:57:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-27 14:57:20,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:21,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:57:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:21,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:21,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:21,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:57:21,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:21,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:21,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:21,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:21,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:21,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:21,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:21,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:57:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:21,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:21,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:21,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:21,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:21,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:57:21,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:57:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:57:21,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:21,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:57:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:21,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:21,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:21,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:21,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:21,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:21,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:21,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:21,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:21,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:21,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:21,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:57:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:21,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:21,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:21,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:21,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:21,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:21,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:21,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:21,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:21,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:21,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:21,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:57:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:21,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:21,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:21,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:21,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:21,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:21,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:21,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:21,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:21,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:21,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:21,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:57:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:21,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:21,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:21,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:21,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:21,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:21,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:21,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:21,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:21,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:57:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:21,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:21,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:21,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:21,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:21,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:21,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:21,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:21,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:21,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:21,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:21,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:57:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:21,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:21,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:21,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:21,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:21,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:21,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:21,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:21,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:21,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:21,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:21,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:57:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:21,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:21,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:21,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:21,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:21,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:21,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:21,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:21,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:57:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:21,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:21,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:21,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:21,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:21,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:21,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:21,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:21,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:21,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:21,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:21,841 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 180 proven. 28 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-27 14:57:21,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195563065] [2020-10-27 14:57:21,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:57:21,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:57:21,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871027468] [2020-10-27 14:57:21,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:57:21,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:57:21,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:57:21,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:57:21,843 INFO L87 Difference]: Start difference. First operand 317 states and 379 transitions. Second operand 21 states. [2020-10-27 14:57:23,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:57:23,429 INFO L93 Difference]: Finished difference Result 596 states and 717 transitions. [2020-10-27 14:57:23,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:57:23,430 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 111 [2020-10-27 14:57:23,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:57:23,433 INFO L225 Difference]: With dead ends: 596 [2020-10-27 14:57:23,433 INFO L226 Difference]: Without dead ends: 345 [2020-10-27 14:57:23,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=239, Invalid=951, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:57:23,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-27 14:57:23,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 333. [2020-10-27 14:57:23,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-27 14:57:23,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 395 transitions. [2020-10-27 14:57:23,498 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 395 transitions. Word has length 111 [2020-10-27 14:57:23,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:57:23,499 INFO L481 AbstractCegarLoop]: Abstraction has 333 states and 395 transitions. [2020-10-27 14:57:23,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:57:23,499 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 395 transitions. [2020-10-27 14:57:23,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 14:57:23,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:57:23,501 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:57:23,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:57:23,501 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:57:23,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:57:23,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1773811167, now seen corresponding path program 14 times [2020-10-27 14:57:23,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:57:23,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897646781] [2020-10-27 14:57:23,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:57:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:23,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:23,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:24,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:24,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:24,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:24,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:24,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:25,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:25,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:25,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:26,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:28,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:28,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 14:57:28,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 33 [2020-10-27 14:57:28,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:57:28,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:57:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:57:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 14:57:28,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:29,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:57:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:29,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:29,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:29,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:57:29,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:29,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:29,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:29,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:29,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:29,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:29,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:29,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:57:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:29,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:29,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:29,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:29,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:29,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:29,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:29,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:29,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:29,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:29,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:29,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:57:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:29,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:29,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:29,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:29,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:29,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:29,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:29,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:29,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:57:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:29,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:29,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:29,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:29,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:29,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:29,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:29,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:29,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:57:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:29,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:29,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:29,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:29,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:29,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:29,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:29,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:29,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:29,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:29,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:29,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:57:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:29,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:29,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:29,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:29,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:29,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:29,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:29,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:29,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:29,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:29,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:29,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:57:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:29,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:29,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:29,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:29,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:29,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:29,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:29,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:29,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:57:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:29,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:29,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:29,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:29,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:29,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:29,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:29,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:29,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:29,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:29,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:29,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 14:57:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:29,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:29,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:29,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:29,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:29,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:29,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:29,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:29,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:29,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:29,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:29,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 14:57:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:29,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:29,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:29,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:29,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:29,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:29,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:29,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:29,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:29,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:29,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 24 proven. 201 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-27 14:57:29,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897646781] [2020-10-27 14:57:29,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:57:29,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:57:29,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017101600] [2020-10-27 14:57:29,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:57:29,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:57:29,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:57:29,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:57:29,240 INFO L87 Difference]: Start difference. First operand 333 states and 395 transitions. Second operand 23 states. [2020-10-27 14:57:31,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:57:31,905 INFO L93 Difference]: Finished difference Result 411 states and 488 transitions. [2020-10-27 14:57:31,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:57:31,906 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 115 [2020-10-27 14:57:31,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:57:31,908 INFO L225 Difference]: With dead ends: 411 [2020-10-27 14:57:31,908 INFO L226 Difference]: Without dead ends: 394 [2020-10-27 14:57:31,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=183, Invalid=1797, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 14:57:31,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-27 14:57:31,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 339. [2020-10-27 14:57:31,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-10-27 14:57:31,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 404 transitions. [2020-10-27 14:57:31,975 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 404 transitions. Word has length 115 [2020-10-27 14:57:31,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:57:31,976 INFO L481 AbstractCegarLoop]: Abstraction has 339 states and 404 transitions. [2020-10-27 14:57:31,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:57:31,976 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 404 transitions. [2020-10-27 14:57:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 14:57:31,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:57:31,978 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:57:31,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:57:31,978 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:57:31,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:57:31,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1907824673, now seen corresponding path program 15 times [2020-10-27 14:57:31,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:57:31,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807029126] [2020-10-27 14:57:31,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:57:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:32,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:32,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:32,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:32,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:32,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:32,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:37,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:37,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 14:57:37,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:57:37,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:57:37,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:37,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:57:37,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:57:37,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 14:57:37,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:37,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:57:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:37,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:37,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:37,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:57:37,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:37,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:37,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:37,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:37,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:37,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:37,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:37,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:57:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:37,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:37,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:37,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:37,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:37,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:37,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:37,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:37,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:37,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:37,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:37,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:57:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:37,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:37,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:37,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:37,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:37,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:37,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:37,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:37,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:37,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:37,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:37,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:57:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:37,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:37,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:37,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:37,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:37,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:37,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:37,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:37,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:37,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:37,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:37,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:57:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:37,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:37,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:37,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:37,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:37,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:37,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:57:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:57:37,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:37,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:57:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:37,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:37,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:37,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:37,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:37,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:37,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:37,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:37,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:37,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:37,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:37,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:57:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:37,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:37,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:37,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:37,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:37,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:37,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:37,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:37,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:37,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:37,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:37,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:57:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:37,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:37,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:37,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:37,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:37,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:37,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:37,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:37,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:37,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:37,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:37,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 14:57:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:37,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:37,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:37,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:37,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:37,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:37,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:57:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:57:37,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:37,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:37,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 14:57:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:37,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:37,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:37,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:37,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:37,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:57:37,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:37,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:37,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:57:37,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:37,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:37,374 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 110 proven. 104 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-27 14:57:37,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807029126] [2020-10-27 14:57:37,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:57:37,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:57:37,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426805201] [2020-10-27 14:57:37,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:57:37,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:57:37,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:57:37,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:57:37,376 INFO L87 Difference]: Start difference. First operand 339 states and 404 transitions. Second operand 16 states. [2020-10-27 14:57:38,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:57:38,651 INFO L93 Difference]: Finished difference Result 468 states and 568 transitions. [2020-10-27 14:57:38,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:57:38,652 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 115 [2020-10-27 14:57:38,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:57:38,655 INFO L225 Difference]: With dead ends: 468 [2020-10-27 14:57:38,655 INFO L226 Difference]: Without dead ends: 402 [2020-10-27 14:57:38,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=157, Invalid=1033, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:57:38,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-10-27 14:57:38,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 344. [2020-10-27 14:57:38,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-10-27 14:57:38,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 409 transitions. [2020-10-27 14:57:38,737 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 409 transitions. Word has length 115 [2020-10-27 14:57:38,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:57:38,737 INFO L481 AbstractCegarLoop]: Abstraction has 344 states and 409 transitions. [2020-10-27 14:57:38,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:57:38,737 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 409 transitions. [2020-10-27 14:57:38,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 14:57:38,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:57:38,739 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:57:38,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:57:38,740 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:57:38,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:57:38,740 INFO L82 PathProgramCache]: Analyzing trace with hash -866967077, now seen corresponding path program 16 times [2020-10-27 14:57:38,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:57:38,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936738752] [2020-10-27 14:57:38,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:57:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:38,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:38,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:38,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:39,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:39,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:39,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:40,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:40,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:40,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:40,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:41,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:41,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:41,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:43,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:43,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 14:57:43,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 14:57:43,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:57:43,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:43,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:57:43,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:57:43,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 14:57:43,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:44,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:57:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:44,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:44,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:44,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:57:44,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:44,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:44,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:44,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:44,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:57:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:44,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:44,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:44,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:44,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:44,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:44,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:44,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:44,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:44,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:44,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:44,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:57:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:44,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:44,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:44,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:44,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:44,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:44,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:44,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:44,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:44,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:44,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:44,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:57:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:44,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:44,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:44,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:44,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:44,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:44,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:44,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:44,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:44,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:44,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:44,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:57:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:44,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:44,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:44,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:44,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:44,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:44,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:44,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:44,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:44,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:44,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:44,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:57:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:44,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:44,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:44,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:44,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:44,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:44,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:44,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:44,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:44,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:44,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:57:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:44,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:44,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:44,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:44,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:44,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:57:44,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:57:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:44,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:44,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:57:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:44,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:44,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:44,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:44,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:44,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:57:44,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:44,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:44,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:57:44,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:44,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:44,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 14:57:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:44,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:44,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:44,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:44,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:44,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:57:44,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:57:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:44,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:44,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 14:57:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:44,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:44,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:44,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:44,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:44,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:57:44,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:44,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:44,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:57:44,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:44,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:44,246 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 108 proven. 75 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-27 14:57:44,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936738752] [2020-10-27 14:57:44,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:57:44,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:57:44,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456016213] [2020-10-27 14:57:44,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:57:44,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:57:44,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:57:44,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:57:44,249 INFO L87 Difference]: Start difference. First operand 344 states and 409 transitions. Second operand 17 states. [2020-10-27 14:57:45,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:57:45,448 INFO L93 Difference]: Finished difference Result 436 states and 521 transitions. [2020-10-27 14:57:45,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:57:45,450 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 115 [2020-10-27 14:57:45,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:57:45,453 INFO L225 Difference]: With dead ends: 436 [2020-10-27 14:57:45,453 INFO L226 Difference]: Without dead ends: 363 [2020-10-27 14:57:45,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:57:45,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-27 14:57:45,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 342. [2020-10-27 14:57:45,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-27 14:57:45,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 403 transitions. [2020-10-27 14:57:45,531 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 403 transitions. Word has length 115 [2020-10-27 14:57:45,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:57:45,531 INFO L481 AbstractCegarLoop]: Abstraction has 342 states and 403 transitions. [2020-10-27 14:57:45,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:57:45,532 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 403 transitions. [2020-10-27 14:57:45,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 14:57:45,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:57:45,534 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:57:45,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:57:45,534 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:57:45,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:57:45,534 INFO L82 PathProgramCache]: Analyzing trace with hash -618820583, now seen corresponding path program 17 times [2020-10-27 14:57:45,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:57:45,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589670371] [2020-10-27 14:57:45,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:57:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:45,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:45,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:45,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:45,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:45,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:45,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:45,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:45,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:45,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:45,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:45,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:45,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:45,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:46,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:46,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:46,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:46,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:46,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:46,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:46,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:46,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:46,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:46,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:46,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:46,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:46,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:47,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:47,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 14:57:47,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-27 14:57:47,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1868 [2020-10-27 14:57:47,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:47,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:57:47,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:57:47,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 14:57:47,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:47,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:57:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:47,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:47,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:47,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:57:47,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:47,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:47,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:47,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:47,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:47,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:47,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:47,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:57:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:47,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:47,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:47,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:47,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:47,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:47,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:47,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:47,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:47,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:47,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:47,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:57:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:47,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:47,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:47,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:47,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:47,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:47,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:47,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:47,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:47,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:47,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:47,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:57:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:47,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:47,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:47,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:47,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:47,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:47,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:47,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:47,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:57:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:47,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:47,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:47,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:47,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:47,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 14:57:47,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:47,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:47,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:47,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:47,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:47,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:57:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:47,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:47,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:47,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:47,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:47,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:47,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:47,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:47,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:47,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:47,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:47,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:57:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:47,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:47,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:47,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:47,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:47,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:47,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:47,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:47,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:47,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:47,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:57:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:47,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:47,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:47,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:47,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:47,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:47,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:47,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:47,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 14:57:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:47,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:47,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:47,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:47,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:47,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:47,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:47,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:47,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:47,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:47,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:47,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 14:57:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:47,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:47,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:47,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:47,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:47,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:47,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:47,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:47,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:47,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:47,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 16 proven. 209 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-27 14:57:47,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589670371] [2020-10-27 14:57:47,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:57:47,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:57:47,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578043066] [2020-10-27 14:57:47,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:57:47,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:57:47,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:57:47,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:57:47,961 INFO L87 Difference]: Start difference. First operand 342 states and 403 transitions. Second operand 22 states. [2020-10-27 14:57:51,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:57:51,708 INFO L93 Difference]: Finished difference Result 435 states and 513 transitions. [2020-10-27 14:57:51,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-27 14:57:51,708 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 115 [2020-10-27 14:57:51,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:57:51,711 INFO L225 Difference]: With dead ends: 435 [2020-10-27 14:57:51,711 INFO L226 Difference]: Without dead ends: 432 [2020-10-27 14:57:51,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1213 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=387, Invalid=4443, Unknown=0, NotChecked=0, Total=4830 [2020-10-27 14:57:51,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-27 14:57:51,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 361. [2020-10-27 14:57:51,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-10-27 14:57:51,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 426 transitions. [2020-10-27 14:57:51,788 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 426 transitions. Word has length 115 [2020-10-27 14:57:51,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:57:51,789 INFO L481 AbstractCegarLoop]: Abstraction has 361 states and 426 transitions. [2020-10-27 14:57:51,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:57:51,789 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 426 transitions. [2020-10-27 14:57:51,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 14:57:51,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:57:51,791 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:57:51,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:57:51,791 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:57:51,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:57:51,792 INFO L82 PathProgramCache]: Analyzing trace with hash 287748203, now seen corresponding path program 4 times [2020-10-27 14:57:51,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:57:51,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815950681] [2020-10-27 14:57:51,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:57:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:51,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:52,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:52,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 14:57:52,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:52,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-10-27 14:57:52,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:57:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:57:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 14:57:52,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:52,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:57:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:52,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:52,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:52,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:57:52,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:52,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:52,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:52,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:52,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:52,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:57:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:52,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:52,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:52,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:52,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:52,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:57:52,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:52,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:52,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:57:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:52,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:52,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:52,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:52,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:52,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:52,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:52,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:52,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:52,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:52,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:52,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:57:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:52,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:52,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:52,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:52,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:52,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:52,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:52,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:52,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:52,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:52,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:52,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:57:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:52,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:52,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:52,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:52,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:52,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:52,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:52,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:52,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:52,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:52,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:52,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:57:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:52,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:52,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:52,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:52,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:52,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:52,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:52,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:52,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:57:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:52,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:52,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:52,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:52,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:52,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:52,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:52,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:52,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:52,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:52,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:52,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:57:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:52,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:52,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:52,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:52,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:52,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:52,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:52,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:52,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:52,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:52,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:52,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 14:57:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:52,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:52,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:52,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:52,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:52,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:52,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:52,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:52,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:52,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:52,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:52,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 14:57:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:52,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:52,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:52,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:52,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:52,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:52,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:52,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:52,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:52,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:52,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:52,697 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 24 proven. 201 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-27 14:57:52,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815950681] [2020-10-27 14:57:52,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:57:52,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:57:52,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796651205] [2020-10-27 14:57:52,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:57:52,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:57:52,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:57:52,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:57:52,699 INFO L87 Difference]: Start difference. First operand 361 states and 426 transitions. Second operand 20 states. [2020-10-27 14:57:56,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:57:56,092 INFO L93 Difference]: Finished difference Result 452 states and 532 transitions. [2020-10-27 14:57:56,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-27 14:57:56,093 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 115 [2020-10-27 14:57:56,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:57:56,096 INFO L225 Difference]: With dead ends: 452 [2020-10-27 14:57:56,096 INFO L226 Difference]: Without dead ends: 435 [2020-10-27 14:57:56,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=373, Invalid=4049, Unknown=0, NotChecked=0, Total=4422 [2020-10-27 14:57:56,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-27 14:57:56,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 360. [2020-10-27 14:57:56,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-10-27 14:57:56,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 423 transitions. [2020-10-27 14:57:56,169 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 423 transitions. Word has length 115 [2020-10-27 14:57:56,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:57:56,170 INFO L481 AbstractCegarLoop]: Abstraction has 360 states and 423 transitions. [2020-10-27 14:57:56,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:57:56,170 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 423 transitions. [2020-10-27 14:57:56,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 14:57:56,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:57:56,172 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:57:56,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:57:56,172 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:57:56,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:57:56,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1504948713, now seen corresponding path program 18 times [2020-10-27 14:57:56,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:57:56,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125865813] [2020-10-27 14:57:56,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:57:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:56,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:56,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:57,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:57,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 14:57:57,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-27 14:57:57,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1560 [2020-10-27 14:57:57,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:57,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:57:57,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:57:57,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 14:57:57,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:58,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:57:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:58,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:58,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:58,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:57:58,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:58,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:57:58,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:58,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:58,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:58,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:58,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:57:58,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:57:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:58,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:58,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:58,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:58,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:58,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:58,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:58,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:58,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:58,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:58,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:58,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:57:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:58,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:58,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:58,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:58,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:58,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:58,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:58,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:58,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:58,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:58,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:58,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:57:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:58,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:58,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:58,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:58,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:58,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:58,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:58,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:58,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:57:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:58,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:58,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:58,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:58,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:58,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:58,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:58,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:58,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:58,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:58,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:58,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:57:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:58,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:58,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:58,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:58,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:58,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:58,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:58,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:58,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:58,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:58,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:58,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:57:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:58,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:58,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:58,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:58,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:58,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:58,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:58,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:58,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:58,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:58,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:58,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:57:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:58,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:58,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:58,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:58,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:58,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:58,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:58,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:58,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:58,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:58,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:58,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 14:57:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:58,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:58,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:58,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:58,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:58,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:58,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:58,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:58,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:58,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:58,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:58,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 14:57:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:58,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:58,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:58,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:58,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:58,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:58,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:58,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:58,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:58,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:58,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-27 14:57:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:58,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:58,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:58,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:58,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:58,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:58,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:58,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:58,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:58,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:58,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 27 proven. 243 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-27 14:57:58,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125865813] [2020-10-27 14:57:58,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:57:58,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:57:58,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069278719] [2020-10-27 14:57:58,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:57:58,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:57:58,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:57:58,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:57:58,412 INFO L87 Difference]: Start difference. First operand 360 states and 423 transitions. Second operand 20 states. [2020-10-27 14:58:02,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:58:02,221 INFO L93 Difference]: Finished difference Result 507 states and 600 transitions. [2020-10-27 14:58:02,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-27 14:58:02,223 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 124 [2020-10-27 14:58:02,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:58:02,226 INFO L225 Difference]: With dead ends: 507 [2020-10-27 14:58:02,226 INFO L226 Difference]: Without dead ends: 489 [2020-10-27 14:58:02,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1136 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=380, Invalid=4176, Unknown=0, NotChecked=0, Total=4556 [2020-10-27 14:58:02,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-10-27 14:58:02,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 376. [2020-10-27 14:58:02,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-10-27 14:58:02,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 444 transitions. [2020-10-27 14:58:02,317 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 444 transitions. Word has length 124 [2020-10-27 14:58:02,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:58:02,318 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 444 transitions. [2020-10-27 14:58:02,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:58:02,318 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 444 transitions. [2020-10-27 14:58:02,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 14:58:02,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:58:02,321 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:58:02,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 14:58:02,321 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:58:02,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:58:02,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1733342623, now seen corresponding path program 5 times [2020-10-27 14:58:02,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:58:02,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456730131] [2020-10-27 14:58:02,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:58:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:02,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:02,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:02,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:02,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:03,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:03,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:03,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:03,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:04,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:04,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:04,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:07,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:07,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 14:58:07,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 14:58:07,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:58:07,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:07,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:58:07,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:58:07,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-27 14:58:07,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:07,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:58:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:07,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:07,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:07,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:58:07,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:07,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:58:07,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:07,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:07,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:07,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:07,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:07,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:58:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:07,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:07,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:07,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:07,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:07,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:58:07,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:07,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:07,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:07,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:07,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:07,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:58:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:07,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:07,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:07,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:07,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:07,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:07,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:07,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:07,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:07,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:07,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:07,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:58:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:07,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:07,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:07,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:07,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:07,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:07,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:07,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:07,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:58:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:07,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:07,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:07,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:07,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:07,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:07,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:07,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:07,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:07,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:07,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:07,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:58:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:07,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:07,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:07,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:07,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:07,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:07,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:07,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:07,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:07,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:58:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:07,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:07,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:07,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:07,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:07,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:07,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:07,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:07,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:58:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:07,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:07,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:07,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:07,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:07,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:07,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:07,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:07,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:07,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:07,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:07,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 14:58:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:07,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:07,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:07,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:07,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:07,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:07,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:07,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:07,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:07,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:07,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:07,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 14:58:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:07,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:07,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:07,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:07,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:07,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:07,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:07,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:07,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:07,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:07,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:07,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-27 14:58:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:07,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:07,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:07,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:07,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:07,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:07,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:07,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:07,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:07,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:07,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:07,918 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 18 proven. 252 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-27 14:58:07,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456730131] [2020-10-27 14:58:07,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:58:07,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:58:07,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632213069] [2020-10-27 14:58:07,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:58:07,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:58:07,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:58:07,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:58:07,920 INFO L87 Difference]: Start difference. First operand 376 states and 444 transitions. Second operand 22 states. [2020-10-27 14:58:12,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:58:12,176 INFO L93 Difference]: Finished difference Result 509 states and 603 transitions. [2020-10-27 14:58:12,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-27 14:58:12,177 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 124 [2020-10-27 14:58:12,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:58:12,181 INFO L225 Difference]: With dead ends: 509 [2020-10-27 14:58:12,181 INFO L226 Difference]: Without dead ends: 505 [2020-10-27 14:58:12,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=388, Invalid=4868, Unknown=0, NotChecked=0, Total=5256 [2020-10-27 14:58:12,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2020-10-27 14:58:12,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 391. [2020-10-27 14:58:12,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-27 14:58:12,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 462 transitions. [2020-10-27 14:58:12,271 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 462 transitions. Word has length 124 [2020-10-27 14:58:12,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:58:12,271 INFO L481 AbstractCegarLoop]: Abstraction has 391 states and 462 transitions. [2020-10-27 14:58:12,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:58:12,272 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 462 transitions. [2020-10-27 14:58:12,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 14:58:12,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:58:12,274 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:58:12,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 14:58:12,274 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:58:12,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:58:12,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1062865697, now seen corresponding path program 19 times [2020-10-27 14:58:12,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:58:12,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876786291] [2020-10-27 14:58:12,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:58:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:12,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:12,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:13,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:15,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:15,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 14:58:15,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-27 14:58:15,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3513 [2020-10-27 14:58:15,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:15,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:58:15,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:58:15,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-27 14:58:15,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:17,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:58:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:17,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:17,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:17,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:58:17,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:17,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:58:17,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:17,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:17,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:17,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:17,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:17,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:58:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:17,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:17,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:17,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:17,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:17,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:58:17,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:17,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:58:17,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:17,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:58:17,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:17,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:58:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:17,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:17,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:17,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:17,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:17,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:17,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:17,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:17,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:17,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:17,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:17,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:58:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:17,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:17,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:17,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:17,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:17,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:58:17,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:17,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:17,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:58:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:17,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:17,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:17,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:17,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:17,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:58:17,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:17,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:17,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:58:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:17,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:17,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:17,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:17,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:17,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:17,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:17,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:17,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:17,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:17,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:17,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:58:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:17,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:17,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:17,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:17,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:17,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:58:17,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:17,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:17,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:17,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:17,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:17,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:58:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:17,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:17,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:17,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:17,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:17,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:17,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:17,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:17,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 14:58:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:17,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:17,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:17,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:17,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:17,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:17,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:17,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:17,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:17,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:17,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:17,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 14:58:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:17,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:17,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:17,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:17,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:17,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:58:17,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:17,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:17,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-27 14:58:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:17,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:17,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:17,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:17,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:17,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:58:17,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:17,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:17,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:17,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:17,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:17,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 14:58:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:17,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:17,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:17,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:17,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:17,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:17,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:17,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:17,397 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 275 proven. 45 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-27 14:58:17,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876786291] [2020-10-27 14:58:17,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:58:17,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:58:17,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438871922] [2020-10-27 14:58:17,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:58:17,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:58:17,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:58:17,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:58:17,400 INFO L87 Difference]: Start difference. First operand 391 states and 462 transitions. Second operand 24 states. [2020-10-27 14:58:19,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:58:19,719 INFO L93 Difference]: Finished difference Result 732 states and 872 transitions. [2020-10-27 14:58:19,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 14:58:19,720 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 133 [2020-10-27 14:58:19,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:58:19,723 INFO L225 Difference]: With dead ends: 732 [2020-10-27 14:58:19,723 INFO L226 Difference]: Without dead ends: 419 [2020-10-27 14:58:19,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=299, Invalid=1261, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:58:19,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-10-27 14:58:19,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 407. [2020-10-27 14:58:19,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-27 14:58:19,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 478 transitions. [2020-10-27 14:58:19,813 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 478 transitions. Word has length 133 [2020-10-27 14:58:19,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:58:19,813 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 478 transitions. [2020-10-27 14:58:19,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:58:19,814 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 478 transitions. [2020-10-27 14:58:19,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-27 14:58:19,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:58:19,816 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:58:19,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 14:58:19,816 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:58:19,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:58:19,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1231263336, now seen corresponding path program 20 times [2020-10-27 14:58:19,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:58:19,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213037232] [2020-10-27 14:58:19,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:58:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:19,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:19,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:19,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:19,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:19,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:19,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:19,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:19,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:19,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:19,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:19,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:20,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:21,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:21,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:21,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:22,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:22,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:22,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:23,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:23,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:24,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:24,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 14:58:24,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 45 [2020-10-27 14:58:24,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 14:58:24,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:58:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:58:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 14:58:24,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:25,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:58:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:25,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:25,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:25,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:58:25,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:25,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:25,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:25,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:25,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:25,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:25,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:25,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:58:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:25,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:25,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:25,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:25,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:25,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:25,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:25,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:25,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:25,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:25,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:25,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:58:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:25,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:25,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:25,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:25,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:25,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:25,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:25,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:25,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:25,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:25,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:25,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:58:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:25,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:25,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:25,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:25,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:25,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:25,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:25,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:25,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:58:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:25,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:25,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:25,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:25,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:25,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:25,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:25,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:25,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:25,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:25,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:25,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:58:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:25,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:25,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:25,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:25,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:25,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:25,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:25,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:25,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:25,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:25,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:25,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 14:58:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:25,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:25,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:25,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:25,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:25,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:25,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:25,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:25,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:25,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:25,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:25,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:58:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:25,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:25,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:25,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:25,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:25,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:25,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:25,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:25,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:25,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:25,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:25,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 14:58:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:25,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:25,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:25,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:25,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:25,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:58:25,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:58:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:58:25,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:25,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-27 14:58:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:25,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:25,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:25,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:25,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:25,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:25,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:25,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:25,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-27 14:58:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:25,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:25,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:25,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:25,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:25,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:25,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:25,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:25,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:25,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:25,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:25,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 14:58:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:25,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:25,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:25,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:25,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:25,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:25,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:25,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:25,960 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 48 proven. 320 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-27 14:58:25,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213037232] [2020-10-27 14:58:25,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:58:25,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:58:25,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842143629] [2020-10-27 14:58:25,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:58:25,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:58:25,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:58:25,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=698, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:58:25,967 INFO L87 Difference]: Start difference. First operand 407 states and 478 transitions. Second operand 28 states. [2020-10-27 14:58:30,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:58:30,180 INFO L93 Difference]: Finished difference Result 496 states and 591 transitions. [2020-10-27 14:58:30,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 14:58:30,181 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 137 [2020-10-27 14:58:30,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:58:30,184 INFO L225 Difference]: With dead ends: 496 [2020-10-27 14:58:30,184 INFO L226 Difference]: Without dead ends: 478 [2020-10-27 14:58:30,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=230, Invalid=2962, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 14:58:30,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-10-27 14:58:30,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 429. [2020-10-27 14:58:30,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-10-27 14:58:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 508 transitions. [2020-10-27 14:58:30,288 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 508 transitions. Word has length 137 [2020-10-27 14:58:30,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:58:30,288 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 508 transitions. [2020-10-27 14:58:30,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:58:30,289 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 508 transitions. [2020-10-27 14:58:30,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-27 14:58:30,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:58:30,291 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:58:30,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 14:58:30,291 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:58:30,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:58:30,292 INFO L82 PathProgramCache]: Analyzing trace with hash -998990448, now seen corresponding path program 21 times [2020-10-27 14:58:30,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:58:30,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306338479] [2020-10-27 14:58:30,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:58:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:30,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:30,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:30,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:30,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:30,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:30,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:32,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:32,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:35,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:35,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 14:58:35,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:58:35,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:58:35,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:35,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:58:35,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:58:35,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 14:58:35,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:35,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:58:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:35,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:35,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:35,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:58:35,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:35,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:58:35,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:35,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:35,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:35,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:35,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:35,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:58:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:35,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:35,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:35,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:35,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:35,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:35,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:35,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:35,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:35,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:35,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:35,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:58:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:35,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:35,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:35,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:35,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:35,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:35,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:35,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:35,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:35,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:35,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:35,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:58:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:35,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:35,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:35,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:35,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:35,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:35,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:35,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:35,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:58:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:35,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:35,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:35,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:35,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:35,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:35,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:35,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:35,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:58:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:35,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:35,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:35,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:35,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:35,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:35,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:35,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:35,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:35,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:35,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:35,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 14:58:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:35,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:35,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:35,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:35,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:35,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:58:35,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:58:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:58:35,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:36,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:58:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:36,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:36,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:36,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:36,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:36,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:36,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:36,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:36,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:36,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:36,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:36,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 14:58:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:36,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:36,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:36,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:36,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:36,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:36,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:36,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:36,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-27 14:58:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:36,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:36,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:36,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:36,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:36,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:36,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:36,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:36,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:36,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:36,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-27 14:58:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:36,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:36,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:36,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:36,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:36,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:58:36,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:36,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:36,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:58:36,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:36,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:36,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 14:58:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:36,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:36,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:36,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:36,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:36,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:58:36,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:36,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:36,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:58:36,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:36,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:36,147 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 124 proven. 235 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-10-27 14:58:36,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306338479] [2020-10-27 14:58:36,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:58:36,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:58:36,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455247054] [2020-10-27 14:58:36,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:58:36,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:58:36,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:58:36,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=547, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:58:36,149 INFO L87 Difference]: Start difference. First operand 429 states and 508 transitions. Second operand 25 states. [2020-10-27 14:58:38,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:58:38,869 INFO L93 Difference]: Finished difference Result 491 states and 582 transitions. [2020-10-27 14:58:38,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 14:58:38,870 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 137 [2020-10-27 14:58:38,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:58:38,873 INFO L225 Difference]: With dead ends: 491 [2020-10-27 14:58:38,873 INFO L226 Difference]: Without dead ends: 427 [2020-10-27 14:58:38,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=142, Invalid=1580, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:58:38,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-10-27 14:58:38,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 412. [2020-10-27 14:58:38,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-27 14:58:38,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 480 transitions. [2020-10-27 14:58:38,965 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 480 transitions. Word has length 137 [2020-10-27 14:58:38,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:58:38,966 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 480 transitions. [2020-10-27 14:58:38,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:58:38,966 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 480 transitions. [2020-10-27 14:58:38,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-27 14:58:38,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:58:38,968 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:58:38,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-27 14:58:38,968 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:58:38,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:58:38,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1133003954, now seen corresponding path program 22 times [2020-10-27 14:58:38,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:58:38,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367375173] [2020-10-27 14:58:38,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:58:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:39,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:39,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:40,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:41,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:41,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 14:58:41,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 37 [2020-10-27 14:58:41,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2443 [2020-10-27 14:58:41,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:41,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:58:41,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:58:41,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-27 14:58:41,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:58:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:58:42,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:42,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:42,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:42,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:42,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:58:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:42,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:58:42,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:42,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:42,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:42,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:58:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:42,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:42,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:42,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:42,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:42,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:58:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:42,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:42,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:42,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:42,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:42,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:58:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:42,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:42,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:42,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:42,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:42,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:58:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:42,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:42,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:42,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 14:58:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:42,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:42,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:42,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:42,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:42,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:58:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:42,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:42,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:42,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:42,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:42,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 14:58:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:42,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:42,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:42,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:42,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:42,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-27 14:58:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:42,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:42,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:42,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:42,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:42,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-27 14:58:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:42,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:42,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:42,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 14:58:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:42,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:42,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:42,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:42,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:42,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,116 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 20 proven. 321 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-27 14:58:42,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367375173] [2020-10-27 14:58:42,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:58:42,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:58:42,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644166829] [2020-10-27 14:58:42,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:58:42,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:58:42,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:58:42,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=549, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:58:42,118 INFO L87 Difference]: Start difference. First operand 412 states and 480 transitions. Second operand 25 states. [2020-10-27 14:58:47,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:58:47,625 INFO L93 Difference]: Finished difference Result 501 states and 585 transitions. [2020-10-27 14:58:47,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-10-27 14:58:47,626 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 137 [2020-10-27 14:58:47,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:58:47,629 INFO L225 Difference]: With dead ends: 501 [2020-10-27 14:58:47,629 INFO L226 Difference]: Without dead ends: 498 [2020-10-27 14:58:47,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1870 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=499, Invalid=6641, Unknown=0, NotChecked=0, Total=7140 [2020-10-27 14:58:47,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-10-27 14:58:47,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 431. [2020-10-27 14:58:47,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-10-27 14:58:47,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 503 transitions. [2020-10-27 14:58:47,726 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 503 transitions. Word has length 137 [2020-10-27 14:58:47,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:58:47,727 INFO L481 AbstractCegarLoop]: Abstraction has 431 states and 503 transitions. [2020-10-27 14:58:47,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:58:47,727 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 503 transitions. [2020-10-27 14:58:47,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-27 14:58:47,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:58:47,729 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:58:47,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-27 14:58:47,729 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:58:47,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:58:47,730 INFO L82 PathProgramCache]: Analyzing trace with hash 986108708, now seen corresponding path program 5 times [2020-10-27 14:58:47,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:58:47,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943645444] [2020-10-27 14:58:47,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:58:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:47,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:48,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:48,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 14:58:48,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:48,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 805 [2020-10-27 14:58:48,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:48,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:58:48,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:58:48,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 14:58:48,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:49,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:58:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:49,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:49,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:49,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:58:49,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:49,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:49,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:49,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:49,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:49,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:49,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:49,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:58:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:49,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:49,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:49,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:49,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:49,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:58:49,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:49,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:49,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:49,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:49,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:49,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:58:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:49,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:49,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:49,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:49,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:49,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:49,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:49,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:49,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:49,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:49,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:49,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:58:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:49,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:49,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:49,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:49,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:49,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:49,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:49,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:49,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:49,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:49,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:49,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:58:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:49,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:49,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:49,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:49,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:49,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:49,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:49,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:49,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:49,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:49,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:49,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:58:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:49,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:49,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:49,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:49,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:49,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:49,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:49,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:49,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 14:58:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:49,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:49,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:49,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:49,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:49,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:49,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:49,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:49,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:49,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:49,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:49,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:58:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:49,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:49,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:49,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:49,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:49,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:49,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:49,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:49,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:49,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:49,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:49,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 14:58:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:49,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:49,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:49,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:49,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:49,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:49,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:49,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:49,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:49,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:49,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:49,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-27 14:58:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:49,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:49,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:49,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:49,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:49,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:49,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:49,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:49,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:49,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:49,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:49,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-27 14:58:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:49,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:49,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:49,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:49,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:49,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:49,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:49,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:49,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:49,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:49,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:49,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 14:58:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:49,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:49,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:49,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:49,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:49,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:49,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:49,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:49,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:49,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:49,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 30 proven. 311 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-27 14:58:49,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943645444] [2020-10-27 14:58:49,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:58:49,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:58:49,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15493180] [2020-10-27 14:58:49,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:58:49,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:58:49,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:58:49,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:58:49,222 INFO L87 Difference]: Start difference. First operand 431 states and 503 transitions. Second operand 23 states. [2020-10-27 14:58:54,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:58:54,098 INFO L93 Difference]: Finished difference Result 518 states and 604 transitions. [2020-10-27 14:58:54,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-27 14:58:54,099 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 137 [2020-10-27 14:58:54,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:58:54,103 INFO L225 Difference]: With dead ends: 518 [2020-10-27 14:58:54,103 INFO L226 Difference]: Without dead ends: 501 [2020-10-27 14:58:54,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1764 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=483, Invalid=6159, Unknown=0, NotChecked=0, Total=6642 [2020-10-27 14:58:54,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-10-27 14:58:54,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 436. [2020-10-27 14:58:54,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-10-27 14:58:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 509 transitions. [2020-10-27 14:58:54,199 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 509 transitions. Word has length 137 [2020-10-27 14:58:54,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:58:54,199 INFO L481 AbstractCegarLoop]: Abstraction has 436 states and 509 transitions. [2020-10-27 14:58:54,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:58:54,200 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 509 transitions. [2020-10-27 14:58:54,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 14:58:54,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:58:54,202 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:58:54,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-27 14:58:54,202 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:58:54,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:58:54,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1703118930, now seen corresponding path program 23 times [2020-10-27 14:58:54,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:58:54,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774417015] [2020-10-27 14:58:54,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:58:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:54,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:55,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:55,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:55,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:55,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:55,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:55,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:55,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:56,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:57,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:57,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 14:58:57,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 37 [2020-10-27 14:58:57,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3561 [2020-10-27 14:58:57,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:57,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:58:57,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:58:57,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-27 14:58:57,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:58,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:58:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:58,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:58,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:58,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:58:58,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:58,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:58,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:58,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:58,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:58,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:58,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:58,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:58:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:58,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:58,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:58,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:58,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:58,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:58:58,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:58,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:58,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:58:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:58,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:58,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:58,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:58,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:58,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:58,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:58,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:58,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:58,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:58,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:58,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:58:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:58,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:58,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:58,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:58,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:58,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:58,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:58,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:58,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:58:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:58,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:58,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:58,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:58,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:58,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:58,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:58,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:58,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:58,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:58,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:58,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:58:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:58,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:58,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:58,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:58,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:58,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:58,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:58,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:58,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:58,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:58,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:58,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 14:58:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:58,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:58,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:58,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:58,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:58,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:58,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:58,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:58,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:58,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:58,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:58,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:58:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:58,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:58,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:58,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:58,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:58,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:58,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:58,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:58,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 14:58:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:58,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:58,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:58,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:58,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:58,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:58,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:58,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:58,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:58,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:58,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:58,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-27 14:58:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:58,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:58,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:58,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:58,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:58,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:58,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:58,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:58,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:58,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:58,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:58,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-27 14:58:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:58,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:58,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:58,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:58,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:58,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:58,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:58,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:58,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:58,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:58,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:58,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 14:58:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:58,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:58,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:58,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:58,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:58,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:58,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:58,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:58,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:58,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:58,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:58,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-27 14:58:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:58,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:58,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:58,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:58,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:58,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:58,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:58,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 33 proven. 363 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-27 14:58:58,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774417015] [2020-10-27 14:58:58,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:58:58,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:58:58,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660935894] [2020-10-27 14:58:58,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:58:58,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:58:58,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:58:58,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:58:58,482 INFO L87 Difference]: Start difference. First operand 436 states and 509 transitions. Second operand 23 states. [2020-10-27 14:59:03,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:03,899 INFO L93 Difference]: Finished difference Result 600 states and 706 transitions. [2020-10-27 14:59:03,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-27 14:59:03,900 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 146 [2020-10-27 14:59:03,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:03,904 INFO L225 Difference]: With dead ends: 600 [2020-10-27 14:59:03,904 INFO L226 Difference]: Without dead ends: 582 [2020-10-27 14:59:03,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1777 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=490, Invalid=6316, Unknown=0, NotChecked=0, Total=6806 [2020-10-27 14:59:03,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-10-27 14:59:04,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 452. [2020-10-27 14:59:04,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-10-27 14:59:04,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 530 transitions. [2020-10-27 14:59:04,027 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 530 transitions. Word has length 146 [2020-10-27 14:59:04,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:04,028 INFO L481 AbstractCegarLoop]: Abstraction has 452 states and 530 transitions. [2020-10-27 14:59:04,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:59:04,028 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 530 transitions. [2020-10-27 14:59:04,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 14:59:04,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:04,031 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:59:04,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-27 14:59:04,031 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:04,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:04,031 INFO L82 PathProgramCache]: Analyzing trace with hash -2073728314, now seen corresponding path program 6 times [2020-10-27 14:59:04,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:04,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784162098] [2020-10-27 14:59:04,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:04,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:04,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:04,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:04,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:04,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:04,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:07,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:07,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:07,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:07,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:07,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:07,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:09,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:09,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 14:59:09,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 14:59:09,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:59:09,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:09,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:59:09,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:59:09,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-27 14:59:09,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:09,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:09,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:09,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:09,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:09,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:09,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:59:09,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:09,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:09,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:59:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:09,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:09,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:09,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:09,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:09,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:09,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:09,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:09,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:09,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:09,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:09,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:59:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:09,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:09,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:09,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:09,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:09,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:09,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:09,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:09,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:59:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:09,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:09,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:09,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:09,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:09,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:09,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:09,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:09,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:59:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:09,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:09,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:09,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:09,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:09,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:09,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:09,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:09,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:59:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:09,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:09,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:09,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:09,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:09,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:09,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:09,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:09,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:09,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:09,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:09,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 14:59:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:09,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:09,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:09,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:09,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:09,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:09,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:09,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:09,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:09,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:09,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:09,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:59:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:09,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:09,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:09,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:09,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:09,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:09,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:09,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:09,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:09,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:09,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:09,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 14:59:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:09,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:09,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:09,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:09,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:09,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:09,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:09,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:09,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:09,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:09,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:09,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-27 14:59:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:09,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:09,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:09,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:09,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:09,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:59:09,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:09,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:09,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:09,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:09,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:09,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-27 14:59:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:09,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:09,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:09,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:09,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:09,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:09,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:09,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:09,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:09,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:09,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:09,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 14:59:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:09,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:09,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:09,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:09,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:09,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:09,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:09,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:09,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:09,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:09,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:09,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-27 14:59:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:09,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:09,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:09,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:09,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:09,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:09,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:09,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:09,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:09,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:09,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:09,826 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 22 proven. 374 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-27 14:59:09,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784162098] [2020-10-27 14:59:09,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:59:09,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:59:09,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727321158] [2020-10-27 14:59:09,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:59:09,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:09,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:59:09,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:59:09,828 INFO L87 Difference]: Start difference. First operand 452 states and 530 transitions. Second operand 25 states. [2020-10-27 14:59:15,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:15,955 INFO L93 Difference]: Finished difference Result 602 states and 709 transitions. [2020-10-27 14:59:15,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-10-27 14:59:15,956 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 146 [2020-10-27 14:59:15,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:15,959 INFO L225 Difference]: With dead ends: 602 [2020-10-27 14:59:15,959 INFO L226 Difference]: Without dead ends: 598 [2020-10-27 14:59:15,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1966 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=501, Invalid=7331, Unknown=0, NotChecked=0, Total=7832 [2020-10-27 14:59:15,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-10-27 14:59:16,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 467. [2020-10-27 14:59:16,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-27 14:59:16,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 548 transitions. [2020-10-27 14:59:16,080 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 548 transitions. Word has length 146 [2020-10-27 14:59:16,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:16,080 INFO L481 AbstractCegarLoop]: Abstraction has 467 states and 548 transitions. [2020-10-27 14:59:16,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:59:16,081 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 548 transitions. [2020-10-27 14:59:16,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-27 14:59:16,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:16,083 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:59:16,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-27 14:59:16,084 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:16,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:16,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1558553896, now seen corresponding path program 24 times [2020-10-27 14:59:16,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:16,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045103609] [2020-10-27 14:59:16,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:16,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:16,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:17,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:17,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:17,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:17,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:17,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:17,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:17,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:17,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:17,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:17,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:17,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:17,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:17,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:18,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:21,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:21,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-27 14:59:21,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-27 14:59:21,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:59:21,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:21,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:59:21,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:59:21,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-27 14:59:21,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:21,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:21,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:21,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:21,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:21,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:21,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:59:21,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:21,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:21,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:59:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:21,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:21,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:21,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:21,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:21,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:59:21,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:59:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:59:21,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:21,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:59:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:21,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:21,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:21,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:21,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:21,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:59:21,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:21,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:21,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:21,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:21,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:21,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:59:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:21,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:21,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:21,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:21,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:21,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:21,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:21,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:21,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:21,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:21,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:59:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:21,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:21,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:21,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:21,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:21,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:21,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:21,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:21,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:59:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:21,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:21,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:21,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:21,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:21,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:21,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:21,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:21,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:21,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 14:59:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:21,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:21,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:21,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:21,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:21,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:21,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:21,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:21,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:21,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:21,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:21,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:59:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:21,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:21,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:21,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:21,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:21,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:21,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:21,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:21,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:21,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:21,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:21,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 14:59:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:21,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:21,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:21,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:21,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:21,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:21,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:21,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:21,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:21,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:21,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:21,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-27 14:59:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:21,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:21,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:21,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:21,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:21,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:21,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:21,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:21,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:21,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:21,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:21,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-27 14:59:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:21,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:21,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:21,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:21,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:21,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:21,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:21,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:21,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:21,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:21,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:21,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 14:59:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:21,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:21,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:21,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:21,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:21,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:21,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:21,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:21,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:21,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:21,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:21,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-27 14:59:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:21,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:21,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:21,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:21,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:21,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:21,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:21,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:21,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:21,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:21,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:21,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-27 14:59:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:21,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:21,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:21,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:21,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:21,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:21,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:21,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:21,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:21,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:21,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 390 proven. 66 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-27 14:59:21,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045103609] [2020-10-27 14:59:21,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:59:21,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:59:21,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329907012] [2020-10-27 14:59:21,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:59:21,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:21,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:59:21,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:59:21,862 INFO L87 Difference]: Start difference. First operand 467 states and 548 transitions. Second operand 27 states.