/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=NARROWEST --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 -i ../../../trunk/examples/svcomp/array-tiling/nr2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 05:22:44,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 05:22:44,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 05:22:44,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 05:22:44,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 05:22:44,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 05:22:44,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 05:22:44,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 05:22:44,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 05:22:44,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 05:22:44,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 05:22:44,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 05:22:44,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 05:22:44,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 05:22:44,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 05:22:44,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 05:22:44,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 05:22:44,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 05:22:44,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 05:22:44,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 05:22:44,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 05:22:44,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 05:22:44,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 05:22:44,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 05:22:44,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 05:22:44,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 05:22:44,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 05:22:44,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 05:22:44,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 05:22:44,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 05:22:44,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 05:22:44,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 05:22:44,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 05:22:44,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 05:22:44,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 05:22:44,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 05:22:44,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 05:22:44,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 05:22:44,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 05:22:44,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 05:22:44,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 05:22:44,458 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 [2020-10-13 05:22:44,496 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 05:22:44,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 05:22:44,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 05:22:44,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 05:22:44,497 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 05:22:44,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 05:22:44,498 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 05:22:44,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 05:22:44,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 05:22:44,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 05:22:44,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 05:22:44,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 05:22:44,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 05:22:44,500 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 05:22:44,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 05:22:44,501 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 05:22:44,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 05:22:44,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 05:22:44,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 05:22:44,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 05:22:44,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 05:22:44,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:22:44,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 05:22:44,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 05:22:44,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 05:22:44,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 05:22:44,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 05:22:44,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 05:22:44,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 05:22:44,505 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 05:22:44,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 05:22:44,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 05:22:44,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 05:22:44,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 05:22:44,819 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 05:22:44,820 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/nr2.c [2020-10-13 05:22:44,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1442a438e/6896d065466c48d78db7ac49b0f62c37/FLAG3983e745b [2020-10-13 05:22:45,332 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 05:22:45,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/nr2.c [2020-10-13 05:22:45,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1442a438e/6896d065466c48d78db7ac49b0f62c37/FLAG3983e745b [2020-10-13 05:22:45,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1442a438e/6896d065466c48d78db7ac49b0f62c37 [2020-10-13 05:22:45,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 05:22:45,714 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 05:22:45,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 05:22:45,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 05:22:45,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 05:22:45,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:22:45" (1/1) ... [2020-10-13 05:22:45,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bedca4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:22:45, skipping insertion in model container [2020-10-13 05:22:45,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:22:45" (1/1) ... [2020-10-13 05:22:45,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 05:22:45,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 05:22:45,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:22:45,919 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 05:22:45,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:22:45,961 INFO L208 MainTranslator]: Completed translation [2020-10-13 05:22:45,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:22:45 WrapperNode [2020-10-13 05:22:45,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 05:22:45,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 05:22:45,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 05:22:45,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 05:22:46,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:22:45" (1/1) ... [2020-10-13 05:22:46,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:22:45" (1/1) ... [2020-10-13 05:22:46,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:22:45" (1/1) ... [2020-10-13 05:22:46,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:22:45" (1/1) ... [2020-10-13 05:22:46,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:22:45" (1/1) ... [2020-10-13 05:22:46,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:22:45" (1/1) ... [2020-10-13 05:22:46,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:22:45" (1/1) ... [2020-10-13 05:22:46,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 05:22:46,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 05:22:46,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 05:22:46,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 05:22:46,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:22:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:22:46,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 05:22:46,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 05:22:46,168 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 05:22:46,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 05:22:46,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 05:22:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 05:22:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 05:22:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 05:22:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 05:22:46,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 05:22:46,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 05:22:46,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 05:22:46,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 05:22:46,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 05:22:46,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 05:22:46,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 05:22:46,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 05:22:46,490 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 05:22:46,490 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 05:22:46,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:22:46 BoogieIcfgContainer [2020-10-13 05:22:46,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 05:22:46,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 05:22:46,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 05:22:46,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 05:22:46,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:22:45" (1/3) ... [2020-10-13 05:22:46,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a15a522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:22:46, skipping insertion in model container [2020-10-13 05:22:46,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:22:45" (2/3) ... [2020-10-13 05:22:46,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a15a522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:22:46, skipping insertion in model container [2020-10-13 05:22:46,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:22:46" (3/3) ... [2020-10-13 05:22:46,503 INFO L109 eAbstractionObserver]: Analyzing ICFG nr2.c [2020-10-13 05:22:46,513 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 05:22:46,521 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 05:22:46,534 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 05:22:46,557 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 05:22:46,558 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 05:22:46,558 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 05:22:46,558 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 05:22:46,558 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 05:22:46,558 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 05:22:46,558 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 05:22:46,558 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 05:22:46,576 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-13 05:22:46,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 05:22:46,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:22:46,583 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] [2020-10-13 05:22:46,584 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:22:46,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:22:46,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1740462776, now seen corresponding path program 1 times [2020-10-13 05:22:46,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:22:46,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215899280] [2020-10-13 05:22:46,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:22:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:46,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:46,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:46,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:47,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:47,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 05:22:47,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:22:47,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 523 [2020-10-13 05:22:47,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 05:22:47,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:47,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 05:22:47,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:22:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:47,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:47,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:47,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:22:47,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:47,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:22:47,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:47,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:47,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:47,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:47,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:22:47,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:22:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:47,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:47,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:47,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:47,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:22:47,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:22:47,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:22:47,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:47,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:47,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 05:22:47,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:47,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:22:47,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:22:47,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215899280] [2020-10-13 05:22:47,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:22:47,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 05:22:47,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985850458] [2020-10-13 05:22:47,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 05:22:47,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:22:47,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 05:22:47,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:22:47,377 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-13 05:22:47,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:22:47,484 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2020-10-13 05:22:47,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 05:22:47,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-13 05:22:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:22:47,501 INFO L225 Difference]: With dead ends: 63 [2020-10-13 05:22:47,501 INFO L226 Difference]: Without dead ends: 31 [2020-10-13 05:22:47,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:22:47,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-13 05:22:47,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-13 05:22:47,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 05:22:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 05:22:47,547 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2020-10-13 05:22:47,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:22:47,547 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 05:22:47,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 05:22:47,548 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 05:22:47,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 05:22:47,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:22:47,549 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] [2020-10-13 05:22:47,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 05:22:47,550 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:22:47,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:22:47,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1382737917, now seen corresponding path program 1 times [2020-10-13 05:22:47,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:22:47,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618182776] [2020-10-13 05:22:47,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:22:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:47,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:47,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:47,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:48,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:48,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:48,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 05:22:48,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:22:48,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 805 [2020-10-13 05:22:48,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:48,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:22:48,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 05:22:48,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:22:48,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:22:48,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:22:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:48,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:48,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:48,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:22:48,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:48,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:22:48,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:48,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:48,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:48,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:48,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:22:48,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:22:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:48,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:48,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:48,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:22:48,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:48,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:22:48,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:48,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:22:48,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618182776] [2020-10-13 05:22:48,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:22:48,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 05:22:48,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989328144] [2020-10-13 05:22:48,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:22:48,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:22:48,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:22:48,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:22:48,454 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-13 05:22:48,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:22:48,597 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-10-13 05:22:48,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:22:48,598 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-13 05:22:48,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:22:48,600 INFO L225 Difference]: With dead ends: 39 [2020-10-13 05:22:48,601 INFO L226 Difference]: Without dead ends: 37 [2020-10-13 05:22:48,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:22:48,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-13 05:22:48,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-10-13 05:22:48,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-13 05:22:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-13 05:22:48,616 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 22 [2020-10-13 05:22:48,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:22:48,617 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-13 05:22:48,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:22:48,617 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-13 05:22:48,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 05:22:48,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:22:48,619 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] [2020-10-13 05:22:48,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 05:22:48,619 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:22:48,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:22:48,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1384584959, now seen corresponding path program 1 times [2020-10-13 05:22:48,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:22:48,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393677177] [2020-10-13 05:22:48,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:22:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:48,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:48,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:48,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:48,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:48,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 05:22:48,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:22:48,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-13 05:22:48,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:22:48,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:22:48,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:22:48,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:49,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:22:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:49,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:49,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:49,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:22:49,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:49,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:22:49,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:49,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:49,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:22:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:49,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:49,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:49,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:22:49,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:49,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 05:22:49,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:22:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:22:49,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:22:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:22:49,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393677177] [2020-10-13 05:22:49,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:22:49,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 05:22:49,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326784557] [2020-10-13 05:22:49,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 05:22:49,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:22:49,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 05:22:49,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:22:49,141 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 9 states. [2020-10-13 05:22:49,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:22:49,464 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-13 05:22:49,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 05:22:49,464 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-13 05:22:49,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:22:49,469 INFO L225 Difference]: With dead ends: 65 [2020-10-13 05:22:49,470 INFO L226 Difference]: Without dead ends: 47 [2020-10-13 05:22:49,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:22:49,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-13 05:22:49,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2020-10-13 05:22:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 05:22:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-13 05:22:49,485 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 22 [2020-10-13 05:22:49,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:22:49,486 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-13 05:22:49,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 05:22:49,486 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-13 05:22:49,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 05:22:49,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:22:49,487 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] [2020-10-13 05:22:49,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 05:22:49,488 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:22:49,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:22:49,488 INFO L82 PathProgramCache]: Analyzing trace with hash -112997622, now seen corresponding path program 1 times [2020-10-13 05:22:49,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:22:49,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936019690] [2020-10-13 05:22:49,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:22:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:49,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:49,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:49,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 05:22:49,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:49,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 05:22:49,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:22:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 05:22:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 05:22:49,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:49,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:22:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:49,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:49,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:49,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:22:49,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:49,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:22:49,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:49,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:49,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:49,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:49,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:49,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:22:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:49,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:49,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:49,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:22:49,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:49,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:22:49,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:49,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:49,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:49,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:49,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:22:49,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936019690] [2020-10-13 05:22:49,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:22:49,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:22:49,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848168217] [2020-10-13 05:22:49,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:22:49,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:22:49,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:22:49,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:22:49,590 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-10-13 05:22:49,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:22:49,680 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2020-10-13 05:22:49,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 05:22:49,681 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-13 05:22:49,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:22:49,682 INFO L225 Difference]: With dead ends: 62 [2020-10-13 05:22:49,682 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 05:22:49,683 INFO L675 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 [2020-10-13 05:22:49,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 05:22:49,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-13 05:22:49,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-13 05:22:49,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-13 05:22:49,692 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 25 [2020-10-13 05:22:49,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:22:49,693 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-13 05:22:49,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:22:49,693 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-13 05:22:49,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 05:22:49,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:22:49,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:22:49,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 05:22:49,695 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:22:49,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:22:49,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1279331720, now seen corresponding path program 1 times [2020-10-13 05:22:49,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:22:49,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941625004] [2020-10-13 05:22:49,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:22:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:49,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:49,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:49,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:49,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:49,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 05:22:49,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:22:49,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-13 05:22:49,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:49,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:22:49,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 05:22:49,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:22:49,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:22:50,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:22:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:50,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:50,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:50,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:22:50,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:50,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:22:50,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:50,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:50,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:50,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:50,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:50,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:22:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:50,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:50,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:50,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:22:50,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:50,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:22:50,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:50,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:50,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:22:50,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:22:50,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941625004] [2020-10-13 05:22:50,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:22:50,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 05:22:50,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007333408] [2020-10-13 05:22:50,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:22:50,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:22:50,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:22:50,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:22:50,050 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 5 states. [2020-10-13 05:22:50,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:22:50,150 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-13 05:22:50,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:22:50,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-13 05:22:50,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:22:50,152 INFO L225 Difference]: With dead ends: 64 [2020-10-13 05:22:50,152 INFO L226 Difference]: Without dead ends: 41 [2020-10-13 05:22:50,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:22:50,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-13 05:22:50,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-13 05:22:50,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 05:22:50,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-10-13 05:22:50,160 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 28 [2020-10-13 05:22:50,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:22:50,160 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-10-13 05:22:50,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:22:50,161 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-10-13 05:22:50,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 05:22:50,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:22:50,162 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] [2020-10-13 05:22:50,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 05:22:50,162 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:22:50,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:22:50,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1253020598, now seen corresponding path program 2 times [2020-10-13 05:22:50,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:22:50,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530909001] [2020-10-13 05:22:50,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:22:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:50,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:50,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:50,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:50,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:50,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:50,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 05:22:50,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:22:50,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 602 [2020-10-13 05:22:50,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:50,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 05:22:50,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:22:50,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 05:22:50,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:51,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:22:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:51,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:51,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:51,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:22:51,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:51,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:22:51,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:51,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:51,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:51,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:51,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:22:51,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:22:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:51,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:51,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:51,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:22:51,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:51,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:22:51,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:51,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:51,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:51,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:22:51,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:22:51,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530909001] [2020-10-13 05:22:51,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:22:51,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 05:22:51,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754610353] [2020-10-13 05:22:51,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 05:22:51,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:22:51,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 05:22:51,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:22:51,068 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 12 states. [2020-10-13 05:22:52,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:22:52,127 INFO L93 Difference]: Finished difference Result 101 states and 124 transitions. [2020-10-13 05:22:52,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 05:22:52,128 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-10-13 05:22:52,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:22:52,130 INFO L225 Difference]: With dead ends: 101 [2020-10-13 05:22:52,130 INFO L226 Difference]: Without dead ends: 85 [2020-10-13 05:22:52,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2020-10-13 05:22:52,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-13 05:22:52,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 60. [2020-10-13 05:22:52,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-13 05:22:52,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2020-10-13 05:22:52,144 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 31 [2020-10-13 05:22:52,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:22:52,144 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2020-10-13 05:22:52,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 05:22:52,144 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2020-10-13 05:22:52,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 05:22:52,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:22:52,146 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:22:52,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 05:22:52,146 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:22:52,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:22:52,146 INFO L82 PathProgramCache]: Analyzing trace with hash -994855160, now seen corresponding path program 1 times [2020-10-13 05:22:52,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:22:52,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584033597] [2020-10-13 05:22:52,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:22:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:52,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:52,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:52,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:52,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:52,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 05:22:52,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:22:52,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-13 05:22:52,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:52,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:22:52,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:22:52,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 05:22:52,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:22:52,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:22:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:52,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:52,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:52,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:22:52,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:52,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:22:52,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:52,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:52,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:52,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:52,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:52,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:22:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:52,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:52,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:52,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:22:52,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:52,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:22:52,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:52,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:22:52,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584033597] [2020-10-13 05:22:52,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:22:52,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 05:22:52,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705448039] [2020-10-13 05:22:52,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 05:22:52,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:22:52,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 05:22:52,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:22:52,718 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand 9 states. [2020-10-13 05:22:53,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:22:53,042 INFO L93 Difference]: Finished difference Result 114 states and 142 transitions. [2020-10-13 05:22:53,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 05:22:53,043 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-13 05:22:53,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:22:53,045 INFO L225 Difference]: With dead ends: 114 [2020-10-13 05:22:53,045 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 05:22:53,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-13 05:22:53,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 05:22:53,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 67. [2020-10-13 05:22:53,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 05:22:53,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2020-10-13 05:22:53,058 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 31 [2020-10-13 05:22:53,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:22:53,059 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2020-10-13 05:22:53,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 05:22:53,059 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2020-10-13 05:22:53,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 05:22:53,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:22:53,060 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:22:53,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 05:22:53,061 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:22:53,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:22:53,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1762083020, now seen corresponding path program 2 times [2020-10-13 05:22:53,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:22:53,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019746637] [2020-10-13 05:22:53,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:22:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:53,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:53,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:53,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:53,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:53,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:53,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:53,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:53,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:53,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:53,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 05:22:53,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 05:22:53,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-13 05:22:53,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:22:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 05:22:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 05:22:53,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:53,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:22:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:53,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:53,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:53,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:22:53,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:53,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:22:53,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:53,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:53,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:53,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:53,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:53,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:22:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:53,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:53,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:53,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:22:53,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:53,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:22:53,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:53,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:53,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:22:53,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019746637] [2020-10-13 05:22:53,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:22:53,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 05:22:53,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369170525] [2020-10-13 05:22:53,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:22:53,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:22:53,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:22:53,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:22:53,806 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand 5 states. [2020-10-13 05:22:53,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:22:53,898 INFO L93 Difference]: Finished difference Result 134 states and 170 transitions. [2020-10-13 05:22:53,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:22:53,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-13 05:22:53,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:22:53,900 INFO L225 Difference]: With dead ends: 134 [2020-10-13 05:22:53,900 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 05:22:53,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:22:53,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 05:22:53,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 65. [2020-10-13 05:22:53,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 05:22:53,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2020-10-13 05:22:53,911 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 31 [2020-10-13 05:22:53,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:22:53,912 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2020-10-13 05:22:53,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:22:53,912 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2020-10-13 05:22:53,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 05:22:53,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:22:53,913 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] [2020-10-13 05:22:53,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 05:22:53,914 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:22:53,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:22:53,914 INFO L82 PathProgramCache]: Analyzing trace with hash 2020248458, now seen corresponding path program 1 times [2020-10-13 05:22:53,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:22:53,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577617192] [2020-10-13 05:22:53,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:22:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:53,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:53,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:53,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:54,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:54,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:54,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 05:22:54,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:22:54,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-13 05:22:54,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:22:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:22:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 05:22:54,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:54,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:22:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:54,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:54,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:54,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:22:54,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:54,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:22:54,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:54,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:54,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:54,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:22:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:54,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:54,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:54,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:22:54,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:54,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:22:54,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:22:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:22:54,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:54,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 05:22:54,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577617192] [2020-10-13 05:22:54,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:22:54,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 05:22:54,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743780382] [2020-10-13 05:22:54,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:22:54,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:22:54,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:22:54,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:22:54,283 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand 5 states. [2020-10-13 05:22:54,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:22:54,400 INFO L93 Difference]: Finished difference Result 96 states and 114 transitions. [2020-10-13 05:22:54,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:22:54,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-13 05:22:54,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:22:54,402 INFO L225 Difference]: With dead ends: 96 [2020-10-13 05:22:54,402 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 05:22:54,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:22:54,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 05:22:54,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-13 05:22:54,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-13 05:22:54,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-10-13 05:22:54,420 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 31 [2020-10-13 05:22:54,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:22:54,420 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-10-13 05:22:54,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:22:54,421 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-10-13 05:22:54,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 05:22:54,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:22:54,426 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] [2020-10-13 05:22:54,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 05:22:54,427 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:22:54,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:22:54,429 INFO L82 PathProgramCache]: Analyzing trace with hash 901304243, now seen corresponding path program 1 times [2020-10-13 05:22:54,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:22:54,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117742532] [2020-10-13 05:22:54,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:22:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:54,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:54,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:54,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:54,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:55,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:55,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:55,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 05:22:55,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 05:22:55,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1314 [2020-10-13 05:22:55,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:55,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:22:55,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:22:55,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 05:22:55,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:55,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:22:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:55,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:55,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:55,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:22:55,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:55,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:22:55,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:55,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:55,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:55,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:55,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:55,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:22:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:55,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:55,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:55,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:22:55,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:55,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:22:55,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:55,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:22:55,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:55,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:22:55,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:55,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 05:22:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:55,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:55,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:55,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:22:55,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:55,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:22:55,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:55,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:55,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:22:55,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:55,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:55,819 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 05:22:55,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117742532] [2020-10-13 05:22:55,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:22:55,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 05:22:55,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762168324] [2020-10-13 05:22:55,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:22:55,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:22:55,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:22:55,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:22:55,821 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 6 states. [2020-10-13 05:22:55,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:22:55,926 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2020-10-13 05:22:55,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:22:55,927 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-13 05:22:55,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:22:55,928 INFO L225 Difference]: With dead ends: 75 [2020-10-13 05:22:55,928 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 05:22:55,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:22:55,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 05:22:55,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 05:22:55,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 05:22:55,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-10-13 05:22:55,936 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 40 [2020-10-13 05:22:55,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:22:55,936 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-10-13 05:22:55,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:22:55,936 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-10-13 05:22:55,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 05:22:55,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:22:55,937 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:22:55,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 05:22:55,938 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:22:55,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:22:55,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1324006069, now seen corresponding path program 1 times [2020-10-13 05:22:55,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:22:55,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41607654] [2020-10-13 05:22:55,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:22:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:55,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:56,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:56,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:56,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:56,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:56,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:57,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:57,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 05:22:57,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 05:22:57,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1754 [2020-10-13 05:22:57,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 05:22:57,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:22:57,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 05:22:57,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:57,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:22:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:57,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:57,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:57,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:22:57,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:57,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:22:57,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:57,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:57,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:57,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:57,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:22:57,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:22:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:57,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:57,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:57,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:22:57,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:57,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:22:57,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:57,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:22:57,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:57,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:22:57,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:22:57,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 05:22:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:58,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:58,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:22:58,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:22:58,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:22:58,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:22:58,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:22:58,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:22:58,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:22:58,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:22:58,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:22:58,021 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:22:58,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41607654] [2020-10-13 05:22:58,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:22:58,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 05:22:58,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718542654] [2020-10-13 05:22:58,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 05:22:58,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:22:58,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 05:22:58,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:22:58,025 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 16 states. [2020-10-13 05:22:58,596 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2020-10-13 05:22:59,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:22:59,747 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-10-13 05:22:59,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 05:22:59,748 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 40 [2020-10-13 05:22:59,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:22:59,749 INFO L225 Difference]: With dead ends: 67 [2020-10-13 05:22:59,749 INFO L226 Difference]: Without dead ends: 65 [2020-10-13 05:22:59,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2020-10-13 05:22:59,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-13 05:22:59,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2020-10-13 05:22:59,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 05:22:59,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-10-13 05:22:59,759 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 40 [2020-10-13 05:22:59,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:22:59,759 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-10-13 05:22:59,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 05:22:59,760 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-10-13 05:22:59,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 05:22:59,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:22:59,761 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:22:59,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 05:22:59,762 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:22:59,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:22:59,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1149798824, now seen corresponding path program 2 times [2020-10-13 05:22:59,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:22:59,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513531121] [2020-10-13 05:22:59,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:22:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:22:59,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:59,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:59,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:59,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:59,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:22:59,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:00,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:00,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:00,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:00,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:00,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:01,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:04,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:04,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 05:23:04,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 05:23:04,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 05:23:04,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:04,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:23:04,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:23:04,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 05:23:04,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:04,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:23:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:04,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:04,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:04,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:23:04,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:04,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:23:04,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:04,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:04,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:04,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:04,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:04,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:23:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:04,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:04,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:04,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:04,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:04,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:23:04,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:04,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:04,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:04,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:04,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:04,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 05:23:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:04,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:04,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:04,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:04,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:04,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:23:04,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:04,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:23:04,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:04,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:23:04,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:04,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 05:23:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:04,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:04,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:04,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:04,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:04,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:23:04,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:04,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:04,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:23:04,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:04,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:23:04,941 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 05:23:04,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513531121] [2020-10-13 05:23:04,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:23:04,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 05:23:04,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87179404] [2020-10-13 05:23:04,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 05:23:04,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:23:04,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 05:23:04,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:23:04,944 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 10 states. [2020-10-13 05:23:05,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:23:05,312 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2020-10-13 05:23:05,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 05:23:05,313 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-13 05:23:05,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:23:05,314 INFO L225 Difference]: With dead ends: 99 [2020-10-13 05:23:05,314 INFO L226 Difference]: Without dead ends: 83 [2020-10-13 05:23:05,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:23:05,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-13 05:23:05,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 70. [2020-10-13 05:23:05,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-13 05:23:05,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-10-13 05:23:05,333 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 49 [2020-10-13 05:23:05,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:23:05,333 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-10-13 05:23:05,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 05:23:05,334 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-10-13 05:23:05,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 05:23:05,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:23:05,336 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:23:05,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 05:23:05,336 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:23:05,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:23:05,337 INFO L82 PathProgramCache]: Analyzing trace with hash 138681574, now seen corresponding path program 3 times [2020-10-13 05:23:05,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:23:05,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58042931] [2020-10-13 05:23:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:23:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:05,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:05,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:05,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:05,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 05:23:05,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:23:05,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-13 05:23:05,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 05:23:05,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:23:05,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 05:23:05,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:23:05,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:23:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:05,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:05,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:05,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:23:05,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:05,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:23:05,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:05,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:05,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:05,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:05,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:05,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:23:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:05,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:05,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:05,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:05,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:05,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 05:23:05,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:05,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:23:05,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:05,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:23:05,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:06,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 05:23:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:06,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:06,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:06,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:06,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:06,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:23:06,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:06,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:23:06,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:06,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:23:06,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:06,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 05:23:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:06,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:06,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:06,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:06,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:06,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:23:06,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:06,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:23:06,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:06,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:23:06,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:06,041 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 05:23:06,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58042931] [2020-10-13 05:23:06,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:23:06,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 05:23:06,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077805899] [2020-10-13 05:23:06,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 05:23:06,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:23:06,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 05:23:06,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:23:06,043 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 12 states. [2020-10-13 05:23:06,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:23:06,469 INFO L93 Difference]: Finished difference Result 109 states and 119 transitions. [2020-10-13 05:23:06,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 05:23:06,470 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-13 05:23:06,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:23:06,470 INFO L225 Difference]: With dead ends: 109 [2020-10-13 05:23:06,471 INFO L226 Difference]: Without dead ends: 73 [2020-10-13 05:23:06,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2020-10-13 05:23:06,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-13 05:23:06,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 62. [2020-10-13 05:23:06,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-13 05:23:06,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2020-10-13 05:23:06,485 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 49 [2020-10-13 05:23:06,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:23:06,485 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2020-10-13 05:23:06,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 05:23:06,486 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2020-10-13 05:23:06,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 05:23:06,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:23:06,486 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:23:06,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 05:23:06,487 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:23:06,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:23:06,487 INFO L82 PathProgramCache]: Analyzing trace with hash -221172737, now seen corresponding path program 4 times [2020-10-13 05:23:06,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:23:06,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174527688] [2020-10-13 05:23:06,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:23:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:06,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:06,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:06,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:06,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:06,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:06,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:06,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:06,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:07,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:07,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:07,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:07,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:07,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:07,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:07,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:08,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:09,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:09,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:09,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:09,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:09,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:09,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:09,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:09,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:10,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:10,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:10,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:10,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:10,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:11,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:11,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:11,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 05:23:11,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 30 [2020-10-13 05:23:11,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 05:23:11,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:11,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 05:23:11,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:23:11,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 05:23:11,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:11,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:23:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:11,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:11,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:11,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:23:11,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:11,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:23:11,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:11,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:11,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:11,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:23:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:11,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:11,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:11,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:11,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:11,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:23:11,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:11,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:11,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:11,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:11,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:11,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 05:23:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:11,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:11,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:11,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:11,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:11,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:23:11,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:11,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:23:11,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:11,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:23:11,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:11,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 05:23:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:11,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:11,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:11,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:11,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:11,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:23:11,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:11,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:11,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:23:11,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:11,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:11,870 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 05:23:11,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174527688] [2020-10-13 05:23:11,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:23:11,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 05:23:11,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317766560] [2020-10-13 05:23:11,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 05:23:11,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:23:11,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 05:23:11,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:23:11,872 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 16 states. [2020-10-13 05:23:13,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:23:13,092 INFO L93 Difference]: Finished difference Result 114 states and 130 transitions. [2020-10-13 05:23:13,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 05:23:13,094 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-10-13 05:23:13,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:23:13,096 INFO L225 Difference]: With dead ends: 114 [2020-10-13 05:23:13,096 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 05:23:13,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=168, Invalid=888, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 05:23:13,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 05:23:13,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 75. [2020-10-13 05:23:13,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 05:23:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2020-10-13 05:23:13,111 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 58 [2020-10-13 05:23:13,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:23:13,111 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2020-10-13 05:23:13,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 05:23:13,111 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2020-10-13 05:23:13,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 05:23:13,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:23:13,112 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:23:13,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 05:23:13,113 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:23:13,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:23:13,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1232289987, now seen corresponding path program 5 times [2020-10-13 05:23:13,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:23:13,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071880359] [2020-10-13 05:23:13,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:23:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:13,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:13,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:13,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:13,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:13,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:13,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:13,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:13,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:13,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:13,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:13,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:13,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:13,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:14,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:14,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:14,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:15,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:15,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:15,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:15,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:15,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:16,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:16,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:16,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:17,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:17,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 05:23:17,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-13 05:23:17,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4606 [2020-10-13 05:23:17,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:17,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 05:23:17,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:23:17,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 05:23:17,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:18,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:23:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:18,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:18,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:18,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:23:18,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:18,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:23:18,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:18,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:18,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:18,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:18,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:18,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:23:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:18,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:18,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:18,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:18,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:18,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:23:18,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:18,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:18,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:18,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:18,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:18,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 05:23:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:18,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:18,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:18,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:18,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:18,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:23:18,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:23:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:23:18,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:18,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 05:23:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:18,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:18,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:18,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:18,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:18,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:23:18,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:23:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:23:18,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 05:23:18,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071880359] [2020-10-13 05:23:18,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:23:18,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 05:23:18,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846442496] [2020-10-13 05:23:18,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 05:23:18,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:23:18,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 05:23:18,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2020-10-13 05:23:18,433 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 20 states. [2020-10-13 05:23:19,183 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-10-13 05:23:20,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:23:20,284 INFO L93 Difference]: Finished difference Result 137 states and 157 transitions. [2020-10-13 05:23:20,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 05:23:20,285 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 58 [2020-10-13 05:23:20,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:23:20,286 INFO L225 Difference]: With dead ends: 137 [2020-10-13 05:23:20,286 INFO L226 Difference]: Without dead ends: 121 [2020-10-13 05:23:20,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=171, Invalid=1311, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 05:23:20,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-13 05:23:20,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 102. [2020-10-13 05:23:20,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-13 05:23:20,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2020-10-13 05:23:20,308 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 58 [2020-10-13 05:23:20,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:23:20,310 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2020-10-13 05:23:20,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 05:23:20,311 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2020-10-13 05:23:20,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 05:23:20,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:23:20,312 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:23:20,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 05:23:20,313 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:23:20,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:23:20,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1196234399, now seen corresponding path program 6 times [2020-10-13 05:23:20,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:23:20,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448819115] [2020-10-13 05:23:20,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:23:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:20,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:20,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:20,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:20,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:20,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:20,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:20,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:20,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:20,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:21,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:21,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:21,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:21,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:21,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:21,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:21,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:21,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:22,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:22,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:22,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:22,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:22,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:22,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:22,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:22,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:22,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:22,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:22,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:22,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:22,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:23,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:23,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:23,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:23,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:23,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:24,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:24,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:24,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:25,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:25,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 05:23:25,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-13 05:23:25,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:23:25,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:25,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:23:25,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 05:23:25,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 05:23:25,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:25,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:23:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:25,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:25,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:25,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:23:25,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:25,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:23:25,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:25,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:25,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:25,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:25,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:25,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:23:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:25,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:25,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:25,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:25,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:25,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:23:25,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:25,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:25,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:25,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:25,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:25,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 05:23:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:25,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:25,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:25,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:25,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:25,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:23:25,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:25,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:25,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:23:25,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:25,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:25,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:23:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:25,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:25,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:25,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:25,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:25,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:23:25,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:25,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:25,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:23:25,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:25,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:25,377 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 05:23:25,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448819115] [2020-10-13 05:23:25,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:23:25,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 05:23:25,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524045698] [2020-10-13 05:23:25,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:23:25,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:23:25,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:23:25,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:23:25,379 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand 6 states. [2020-10-13 05:23:25,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:23:25,474 INFO L93 Difference]: Finished difference Result 140 states and 158 transitions. [2020-10-13 05:23:25,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:23:25,475 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-13 05:23:25,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:23:25,476 INFO L225 Difference]: With dead ends: 140 [2020-10-13 05:23:25,476 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 05:23:25,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:23:25,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 05:23:25,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-13 05:23:25,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-13 05:23:25,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2020-10-13 05:23:25,491 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 61 [2020-10-13 05:23:25,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:23:25,491 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2020-10-13 05:23:25,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:23:25,491 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2020-10-13 05:23:25,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 05:23:25,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:23:25,492 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:23:25,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 05:23:25,493 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:23:25,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:23:25,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1072635424, now seen corresponding path program 7 times [2020-10-13 05:23:25,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:23:25,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837789066] [2020-10-13 05:23:25,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:23:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:25,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:25,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:25,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:25,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:25,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:25,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:26,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:26,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:26,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:26,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:26,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:26,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:27,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:27,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:27,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:27,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:27,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:27,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:27,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:27,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:27,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:28,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:28,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:28,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:28,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:28,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:28,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:28,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:28,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:28,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:29,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:29,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:29,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:29,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:29,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:29,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:29,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:30,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:30,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:30,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 05:23:30,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-13 05:23:30,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 05:23:30,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 05:23:30,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:23:30,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 05:23:30,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:30,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:23:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:30,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:30,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:30,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:23:30,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:30,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:23:30,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:30,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:30,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:30,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:30,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:30,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:23:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:30,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:30,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:30,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:30,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:30,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:23:30,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:30,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:30,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 05:23:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:30,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:30,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:30,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:30,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:30,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:23:30,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:30,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:23:30,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:30,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:23:30,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:30,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 05:23:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:30,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:30,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:30,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:30,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:30,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:23:30,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:30,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:23:30,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:30,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:23:30,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:30,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:23:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:30,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:30,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:30,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:30,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:30,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:23:30,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:23:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:23:30,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:30,734 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 6 proven. 52 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 05:23:30,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837789066] [2020-10-13 05:23:30,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:23:30,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 05:23:30,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437261045] [2020-10-13 05:23:30,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 05:23:30,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:23:30,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 05:23:30,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:23:30,737 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand 16 states. [2020-10-13 05:23:31,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:23:31,539 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2020-10-13 05:23:31,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 05:23:31,539 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2020-10-13 05:23:31,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:23:31,541 INFO L225 Difference]: With dead ends: 109 [2020-10-13 05:23:31,541 INFO L226 Difference]: Without dead ends: 107 [2020-10-13 05:23:31,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2020-10-13 05:23:31,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-13 05:23:31,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 94. [2020-10-13 05:23:31,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-13 05:23:31,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2020-10-13 05:23:31,558 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 67 [2020-10-13 05:23:31,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:23:31,558 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2020-10-13 05:23:31,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 05:23:31,559 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2020-10-13 05:23:31,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 05:23:31,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:23:31,559 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 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] [2020-10-13 05:23:31,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 05:23:31,560 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:23:31,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:23:31,560 INFO L82 PathProgramCache]: Analyzing trace with hash 399494854, now seen corresponding path program 8 times [2020-10-13 05:23:31,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:23:31,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895850336] [2020-10-13 05:23:31,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:23:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:31,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:31,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:31,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:31,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:31,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:31,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:31,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:31,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:31,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:31,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:33,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:33,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:33,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:33,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:33,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:33,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:33,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:33,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:33,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:33,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:33,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:33,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:33,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:34,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:34,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:34,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:34,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:34,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:34,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:34,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:34,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:34,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:34,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:35,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:35,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:35,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:35,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:35,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:35,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:35,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:36,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:36,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 05:23:36,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 40 [2020-10-13 05:23:36,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 05:23:36,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 05:23:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:23:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 05:23:36,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:36,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:23:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:36,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:36,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:36,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:23:36,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:23:36,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:36,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:23:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:36,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:36,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:36,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:36,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:36,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:23:36,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:36,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:36,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 05:23:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:36,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:36,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:36,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:36,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:36,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:23:36,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:36,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:23:36,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:36,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:23:36,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:36,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:23:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:36,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:36,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:36,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:36,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:36,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:23:36,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:23:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:23:36,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:36,850 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 6 proven. 78 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 05:23:36,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895850336] [2020-10-13 05:23:36,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:23:36,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 05:23:36,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38136694] [2020-10-13 05:23:36,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 05:23:36,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:23:36,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 05:23:36,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-13 05:23:36,852 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand 15 states. [2020-10-13 05:23:37,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:23:37,719 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2020-10-13 05:23:37,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 05:23:37,720 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2020-10-13 05:23:37,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:23:37,721 INFO L225 Difference]: With dead ends: 118 [2020-10-13 05:23:37,721 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 05:23:37,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2020-10-13 05:23:37,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 05:23:37,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2020-10-13 05:23:37,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-13 05:23:37,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2020-10-13 05:23:37,743 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 67 [2020-10-13 05:23:37,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:23:37,744 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2020-10-13 05:23:37,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 05:23:37,744 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2020-10-13 05:23:37,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 05:23:37,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:23:37,746 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:23:37,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 05:23:37,746 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:23:37,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:23:37,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1183461731, now seen corresponding path program 9 times [2020-10-13 05:23:37,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:23:37,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364261048] [2020-10-13 05:23:37,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:23:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:37,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:37,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:37,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:37,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:37,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:37,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:38,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:39,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:39,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:39,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:39,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:39,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:39,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:39,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:39,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:39,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:39,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:39,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:40,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:40,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:40,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:40,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:40,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:40,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:40,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:40,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:40,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:40,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:41,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:41,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:41,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:41,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:41,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:42,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:42,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:42,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:42,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:42,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:42,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:42,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:42,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:42,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:42,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:42,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:42,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:42,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:42,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:42,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 05:23:42,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 46 [2020-10-13 05:23:42,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 05:23:42,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:42,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 05:23:42,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:23:42,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 05:23:42,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:43,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:23:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:43,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:43,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:43,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:23:43,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:43,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:23:43,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:43,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:43,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:43,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:43,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:43,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:23:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:43,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:43,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:43,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:43,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:43,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:23:43,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:43,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:43,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:43,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:43,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:43,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 05:23:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:43,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:43,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:43,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:43,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:43,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:23:43,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:23:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:43,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:23:43,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:43,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 05:23:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:43,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:43,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:43,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:43,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:43,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:23:43,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:43,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:23:43,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:43,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:23:43,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:43,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:23:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:43,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:43,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:43,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:43,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:43,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:23:43,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:43,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:23:43,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:43,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:23:43,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:43,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:23:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:43,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:43,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:43,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:43,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:43,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:23:43,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:43,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:23:43,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:43,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:23:43,614 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 38 proven. 51 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 05:23:43,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364261048] [2020-10-13 05:23:43,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:23:43,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 05:23:43,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028137909] [2020-10-13 05:23:43,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 05:23:43,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:23:43,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 05:23:43,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2020-10-13 05:23:43,619 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 22 states. [2020-10-13 05:23:44,391 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-13 05:23:44,634 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-10-13 05:23:45,612 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-10-13 05:23:46,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:23:46,146 INFO L93 Difference]: Finished difference Result 125 states and 137 transitions. [2020-10-13 05:23:46,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 05:23:46,147 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 76 [2020-10-13 05:23:46,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:23:46,149 INFO L225 Difference]: With dead ends: 125 [2020-10-13 05:23:46,149 INFO L226 Difference]: Without dead ends: 109 [2020-10-13 05:23:46,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=182, Invalid=1458, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 05:23:46,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-13 05:23:46,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2020-10-13 05:23:46,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-13 05:23:46,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2020-10-13 05:23:46,166 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 76 [2020-10-13 05:23:46,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:23:46,166 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2020-10-13 05:23:46,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 05:23:46,166 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2020-10-13 05:23:46,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 05:23:46,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:23:46,167 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:23:46,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 05:23:46,168 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:23:46,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:23:46,168 INFO L82 PathProgramCache]: Analyzing trace with hash 2100388315, now seen corresponding path program 10 times [2020-10-13 05:23:46,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:23:46,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215918678] [2020-10-13 05:23:46,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:23:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:46,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:46,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:46,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:46,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 05:23:46,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:23:46,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-13 05:23:46,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:46,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 05:23:46,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:23:46,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 05:23:46,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:46,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:23:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:46,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:46,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:46,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:23:46,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:46,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:23:46,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:46,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:46,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:46,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:46,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:23:46,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:23:46,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:46,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:46,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:46,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:46,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:46,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:23:46,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:46,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:23:46,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:46,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:23:46,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:23:46,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 05:23:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:46,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:46,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:46,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:46,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:46,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:23:46,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:46,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:23:46,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:46,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:23:46,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 05:23:46,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 05:23:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:46,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:46,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:46,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:46,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:46,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:23:46,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:46,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:23:46,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:46,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:23:46,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:23:46,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:23:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:46,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:46,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:46,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:46,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:46,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:23:46,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:46,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:23:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:23:46,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:23:46,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:23:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:46,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:46,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:46,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:46,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:46,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:23:46,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:23:46,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:46,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:23:46,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:23:46,929 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-13 05:23:46,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215918678] [2020-10-13 05:23:46,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:23:46,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 05:23:46,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849264948] [2020-10-13 05:23:46,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 05:23:46,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:23:46,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 05:23:46,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-13 05:23:46,932 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand 15 states. [2020-10-13 05:23:47,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:23:47,624 INFO L93 Difference]: Finished difference Result 136 states and 143 transitions. [2020-10-13 05:23:47,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 05:23:47,624 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 76 [2020-10-13 05:23:47,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:23:47,626 INFO L225 Difference]: With dead ends: 136 [2020-10-13 05:23:47,626 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 05:23:47,626 INFO L675 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 [2020-10-13 05:23:47,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 05:23:47,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 75. [2020-10-13 05:23:47,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 05:23:47,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-10-13 05:23:47,647 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 76 [2020-10-13 05:23:47,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:23:47,648 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-10-13 05:23:47,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 05:23:47,648 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-10-13 05:23:47,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 05:23:47,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:23:47,649 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:23:47,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 05:23:47,649 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:23:47,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:23:47,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1560643401, now seen corresponding path program 11 times [2020-10-13 05:23:47,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:23:47,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429769498] [2020-10-13 05:23:47,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:23:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:47,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:47,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:47,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:47,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:47,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:47,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:47,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:47,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:48,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:48,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:48,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:48,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:48,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:48,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:48,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:49,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:49,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:49,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:49,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:49,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:49,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:49,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:49,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:49,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:50,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:50,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:50,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:50,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:50,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:50,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:50,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:50,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:51,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:51,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:51,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:51,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:52,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:52,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:52,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:52,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:52,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 05:23:52,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 39 [2020-10-13 05:23:52,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 05:23:52,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:52,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 05:23:52,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:23:52,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 05:23:52,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:53,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:23:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:53,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:53,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:53,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:23:53,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:53,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:23:53,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:53,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:53,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:53,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:53,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:53,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:23:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:53,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:53,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:53,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:53,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:53,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:23:53,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:53,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:23:53,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:53,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:23:53,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:53,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 05:23:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:53,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:53,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:53,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:53,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:53,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:23:53,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:23:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:23:53,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:53,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:23:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:53,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:53,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:53,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:53,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:53,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:23:53,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:23:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:23:53,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:53,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:23:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:53,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:53,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:23:53,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:23:53,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:23:53,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:23:53,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:23:53,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:23:53,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:23:53,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:23:53,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:23:53,854 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 6 proven. 98 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-13 05:23:53,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429769498] [2020-10-13 05:23:53,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:23:53,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 05:23:53,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888561423] [2020-10-13 05:23:53,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 05:23:53,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:23:53,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 05:23:53,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2020-10-13 05:23:53,857 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 26 states. [2020-10-13 05:23:54,899 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2020-10-13 05:23:55,245 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2020-10-13 05:23:56,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:23:56,492 INFO L93 Difference]: Finished difference Result 122 states and 134 transitions. [2020-10-13 05:23:56,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-13 05:23:56,503 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 76 [2020-10-13 05:23:56,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:23:56,505 INFO L225 Difference]: With dead ends: 122 [2020-10-13 05:23:56,505 INFO L226 Difference]: Without dead ends: 120 [2020-10-13 05:23:56,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2020-10-13 05:23:56,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-13 05:23:56,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 107. [2020-10-13 05:23:56,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 05:23:56,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2020-10-13 05:23:56,525 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 76 [2020-10-13 05:23:56,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:23:56,526 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2020-10-13 05:23:56,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 05:23:56,526 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2020-10-13 05:23:56,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-13 05:23:56,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:23:56,527 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:23:56,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 05:23:56,527 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:23:56,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:23:56,527 INFO L82 PathProgramCache]: Analyzing trace with hash 2078371302, now seen corresponding path program 12 times [2020-10-13 05:23:56,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:23:56,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848109668] [2020-10-13 05:23:56,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:23:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:23:56,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:56,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:56,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:56,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:56,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:56,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:56,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:57,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:57,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:57,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:57,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:57,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:57,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:57,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:57,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:58,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:58,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:58,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:58,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:58,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:58,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:58,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:58,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:58,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:58,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:58,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:58,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:58,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:58,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:59,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:59,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:59,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:59,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:59,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:59,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:23:59,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:00,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:00,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:00,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:00,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:00,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:00,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:00,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:00,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:00,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:00,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:00,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:01,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:01,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:01,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:01,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:01,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:01,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:01,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 05:24:01,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 53 [2020-10-13 05:24:01,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 05:24:01,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:01,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 05:24:01,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:01,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 05:24:01,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:02,418 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2020-10-13 05:24:02,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:02,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:02,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:02,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:02,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:02,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:02,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:02,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:02,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:02,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:02,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:02,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:02,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:02,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:02,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:02,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:02,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:02,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 05:24:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:02,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:02,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:02,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:02,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:02,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:02,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:02,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:02,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:24:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:02,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:02,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:02,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:02,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:02,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:02,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:02,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:02,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:02,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:02,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:02,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:24:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:02,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:02,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:02,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:02,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:02,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:02,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:02,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:02,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:02,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:02,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:02,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:24:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:02,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:02,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:02,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:02,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:02,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:24:02,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:24:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:02,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 36 proven. 88 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-13 05:24:02,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848109668] [2020-10-13 05:24:02,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:02,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 05:24:02,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545714470] [2020-10-13 05:24:02,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 05:24:02,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:02,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 05:24:02,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2020-10-13 05:24:02,809 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand 24 states. [2020-10-13 05:24:03,814 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2020-10-13 05:24:03,971 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2020-10-13 05:24:04,161 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-13 05:24:04,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:04,940 INFO L93 Difference]: Finished difference Result 134 states and 146 transitions. [2020-10-13 05:24:04,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 05:24:04,942 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 85 [2020-10-13 05:24:04,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:04,944 INFO L225 Difference]: With dead ends: 134 [2020-10-13 05:24:04,944 INFO L226 Difference]: Without dead ends: 118 [2020-10-13 05:24:04,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=162, Invalid=1320, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 05:24:04,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-13 05:24:04,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 107. [2020-10-13 05:24:04,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 05:24:04,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 114 transitions. [2020-10-13 05:24:04,966 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 114 transitions. Word has length 85 [2020-10-13 05:24:04,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:04,967 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 114 transitions. [2020-10-13 05:24:04,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 05:24:04,967 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 114 transitions. [2020-10-13 05:24:04,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-13 05:24:04,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:04,968 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:04,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 05:24:04,969 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:04,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:04,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1067254052, now seen corresponding path program 13 times [2020-10-13 05:24:04,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:04,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622759785] [2020-10-13 05:24:04,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:05,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:05,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:05,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:05,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:05,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:05,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:05,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:05,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:05,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:05,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:05,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:05,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:05,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:05,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:05,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:06,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:06,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:06,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:06,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:06,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:07,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:07,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:07,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:07,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:07,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:07,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:08,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:08,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:09,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:10,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:10,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 05:24:10,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-13 05:24:10,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 05:24:10,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:10,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 05:24:10,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:10,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 05:24:10,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:10,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:10,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:10,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:10,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:10,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:10,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:10,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:10,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:10,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:10,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:10,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:10,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:10,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:10,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:10,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:10,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:10,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:10,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 05:24:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:10,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:10,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:10,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:10,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:10,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:10,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:10,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:10,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:10,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:10,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:10,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:24:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:10,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:10,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:10,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:10,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:10,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:10,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:10,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:10,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:10,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:10,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:10,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:24:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:10,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:10,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:10,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:10,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:10,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:10,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:10,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:10,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:24:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:10,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:10,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:10,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:10,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:10,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:10,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:10,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 12 proven. 103 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-13 05:24:10,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622759785] [2020-10-13 05:24:10,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:10,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 05:24:10,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320801480] [2020-10-13 05:24:10,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 05:24:10,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:10,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 05:24:10,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:24:10,347 INFO L87 Difference]: Start difference. First operand 107 states and 114 transitions. Second operand 17 states. [2020-10-13 05:24:11,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:11,856 INFO L93 Difference]: Finished difference Result 144 states and 158 transitions. [2020-10-13 05:24:11,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 05:24:11,856 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 85 [2020-10-13 05:24:11,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:11,858 INFO L225 Difference]: With dead ends: 144 [2020-10-13 05:24:11,859 INFO L226 Difference]: Without dead ends: 128 [2020-10-13 05:24:11,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=188, Invalid=1294, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 05:24:11,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-13 05:24:11,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 118. [2020-10-13 05:24:11,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-13 05:24:11,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 129 transitions. [2020-10-13 05:24:11,880 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 129 transitions. Word has length 85 [2020-10-13 05:24:11,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:11,880 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 129 transitions. [2020-10-13 05:24:11,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 05:24:11,880 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 129 transitions. [2020-10-13 05:24:11,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-13 05:24:11,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:11,881 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:11,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 05:24:11,882 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:11,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:11,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1701189632, now seen corresponding path program 14 times [2020-10-13 05:24:11,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:11,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251007322] [2020-10-13 05:24:11,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:11,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:11,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:12,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:12,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:12,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:12,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:12,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:12,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:12,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:12,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:12,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:12,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:12,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:12,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:12,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:12,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:13,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:13,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:13,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:13,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:13,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:13,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:13,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:13,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:13,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:13,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:15,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:15,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:16,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:16,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:16,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 05:24:16,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-13 05:24:16,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 05:24:16,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:16,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 05:24:16,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:16,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 05:24:16,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:17,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:17,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:17,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:17,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:17,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:17,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:17,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:17,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:17,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:17,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:17,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:17,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:17,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:17,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:17,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:17,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:17,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:17,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:17,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:17,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:24:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:17,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:17,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:17,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:17,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:17,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:17,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:17,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:17,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:17,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:17,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:17,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:24:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:17,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:17,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:17,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:17,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:17,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:17,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:17,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:17,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:17,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:17,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:17,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:24:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:17,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:17,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:17,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:17,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:17,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:17,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:17,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:17,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:17,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:17,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 142 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-13 05:24:17,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251007322] [2020-10-13 05:24:17,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:17,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 05:24:17,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246491714] [2020-10-13 05:24:17,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 05:24:17,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:17,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 05:24:17,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-13 05:24:17,353 INFO L87 Difference]: Start difference. First operand 118 states and 129 transitions. Second operand 19 states. [2020-10-13 05:24:18,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:18,906 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2020-10-13 05:24:18,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 05:24:18,907 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 85 [2020-10-13 05:24:18,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:18,909 INFO L225 Difference]: With dead ends: 125 [2020-10-13 05:24:18,909 INFO L226 Difference]: Without dead ends: 123 [2020-10-13 05:24:18,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=196, Invalid=1136, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 05:24:18,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-13 05:24:18,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2020-10-13 05:24:18,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-13 05:24:18,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 127 transitions. [2020-10-13 05:24:18,928 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 127 transitions. Word has length 85 [2020-10-13 05:24:18,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:18,928 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 127 transitions. [2020-10-13 05:24:18,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 05:24:18,928 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 127 transitions. [2020-10-13 05:24:18,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 05:24:18,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:18,929 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:18,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 05:24:18,929 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:18,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:18,930 INFO L82 PathProgramCache]: Analyzing trace with hash -52621287, now seen corresponding path program 15 times [2020-10-13 05:24:18,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:18,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235450021] [2020-10-13 05:24:18,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:18,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:19,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:19,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:19,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:19,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:19,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:19,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:19,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:23,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:23,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 05:24:23,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 05:24:23,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 05:24:23,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:23,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 05:24:23,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:23,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 05:24:23,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:24,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:24,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:24,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:24,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:24,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:24,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:24,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:24,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:24,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:24,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:24,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:24,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:24,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:24,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:24,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:24,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:24,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:24,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:24,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:24,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:24,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:24,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:24,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 05:24:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:24,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:24,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:24,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:24,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:24,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:24,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:24,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:24,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:24,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:24,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:24,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:24:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:24,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:24,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:24,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:24,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:24,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 05:24:24,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:24,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:24,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:24,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:24,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:24,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:24:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:24,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:24,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:24,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:24,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:24,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:24,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:24,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:24,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:24,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:24,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:24,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:24:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:24,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:24,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:24,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:24,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:24,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:24,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:24,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:24,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:24:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:24,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:24,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:24,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:24,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:24,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:24,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:24,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:24,433 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 10 proven. 132 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-13 05:24:24,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235450021] [2020-10-13 05:24:24,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:24,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 05:24:24,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55271903] [2020-10-13 05:24:24,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 05:24:24,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:24,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 05:24:24,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-13 05:24:24,436 INFO L87 Difference]: Start difference. First operand 117 states and 127 transitions. Second operand 19 states. [2020-10-13 05:24:25,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:25,818 INFO L93 Difference]: Finished difference Result 148 states and 165 transitions. [2020-10-13 05:24:25,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 05:24:25,819 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 94 [2020-10-13 05:24:25,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:25,820 INFO L225 Difference]: With dead ends: 148 [2020-10-13 05:24:25,820 INFO L226 Difference]: Without dead ends: 146 [2020-10-13 05:24:25,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=1276, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 05:24:25,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-13 05:24:25,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 132. [2020-10-13 05:24:25,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-13 05:24:25,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 145 transitions. [2020-10-13 05:24:25,843 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 145 transitions. Word has length 94 [2020-10-13 05:24:25,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:25,844 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 145 transitions. [2020-10-13 05:24:25,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 05:24:25,844 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 145 transitions. [2020-10-13 05:24:25,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 05:24:25,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:25,846 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:25,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 05:24:25,846 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:25,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:25,846 INFO L82 PathProgramCache]: Analyzing trace with hash -166329148, now seen corresponding path program 16 times [2020-10-13 05:24:25,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:25,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576378564] [2020-10-13 05:24:25,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:25,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:25,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:25,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:25,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:26,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:26,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:26,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:26,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:26,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:26,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:26,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:26,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:26,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:26,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:26,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:26,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:26,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:27,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:29,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:29,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:29,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:29,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:30,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:30,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:30,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:30,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:30,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 05:24:30,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-13 05:24:30,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 05:24:30,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:30,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 05:24:30,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 05:24:30,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:31,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:31,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:31,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:31,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:31,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:31,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:31,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:31,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:31,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:31,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:31,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:31,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:31,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:31,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:31,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:24:31,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:31,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:31,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 05:24:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:31,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:31,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:31,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:31,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:31,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:31,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:31,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:31,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:31,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:31,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:31,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:24:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:31,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:31,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:31,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:31,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:31,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:31,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:31,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:31,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:31,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:31,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:31,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:24:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:31,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:31,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:31,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:31,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:31,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:31,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:31,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:31,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:31,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:31,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:31,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:24:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:31,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:31,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:31,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:31,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:31,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:31,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:31,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:31,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:24:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:31,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:31,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:31,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:31,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:31,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:31,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:31,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:31,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:31,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:31,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:31,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:24:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:31,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:31,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:31,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:31,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:31,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:31,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:24:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:31,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:31,203 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 44 proven. 125 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 05:24:31,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576378564] [2020-10-13 05:24:31,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:31,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 05:24:31,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085427937] [2020-10-13 05:24:31,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 05:24:31,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:31,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 05:24:31,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:24:31,206 INFO L87 Difference]: Start difference. First operand 132 states and 145 transitions. Second operand 16 states. [2020-10-13 05:24:32,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:32,218 INFO L93 Difference]: Finished difference Result 158 states and 175 transitions. [2020-10-13 05:24:32,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 05:24:32,220 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 103 [2020-10-13 05:24:32,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:32,222 INFO L225 Difference]: With dead ends: 158 [2020-10-13 05:24:32,222 INFO L226 Difference]: Without dead ends: 142 [2020-10-13 05:24:32,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2020-10-13 05:24:32,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-13 05:24:32,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 132. [2020-10-13 05:24:32,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-13 05:24:32,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 144 transitions. [2020-10-13 05:24:32,246 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 144 transitions. Word has length 103 [2020-10-13 05:24:32,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:32,246 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 144 transitions. [2020-10-13 05:24:32,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 05:24:32,247 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 144 transitions. [2020-10-13 05:24:32,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 05:24:32,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:32,248 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:32,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 05:24:32,249 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:32,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:32,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1177446398, now seen corresponding path program 17 times [2020-10-13 05:24:32,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:32,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743116693] [2020-10-13 05:24:32,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:32,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:32,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:32,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:32,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 05:24:32,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:24:32,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-13 05:24:32,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:32,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 05:24:32,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:24:32,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 05:24:32,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:33,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:33,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:33,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:33,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:33,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:33,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:33,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:33,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:33,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:33,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:33,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:33,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:33,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:33,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:33,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:33,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:33,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:24:33,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:24:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:24:33,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:33,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 05:24:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:33,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:33,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:33,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:33,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:33,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:33,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:33,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:33,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:24:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:33,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:33,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:33,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:33,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:33,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:33,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:33,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:33,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:33,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:33,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:33,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:24:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:33,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:33,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:33,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:33,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:33,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:33,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:33,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:33,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:33,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:33,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:33,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:24:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:33,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:33,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:33,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:33,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:33,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:33,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:33,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:33,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:33,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:33,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:24:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:33,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:33,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:33,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:33,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:33,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:33,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:33,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:33,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:33,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:33,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:33,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:24:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:33,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:33,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:33,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:33,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:33,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:33,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:33,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:33,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:33,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:33,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:33,111 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 105 proven. 60 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-13 05:24:33,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743116693] [2020-10-13 05:24:33,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:33,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 05:24:33,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924876739] [2020-10-13 05:24:33,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 05:24:33,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:33,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 05:24:33,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-10-13 05:24:33,112 INFO L87 Difference]: Start difference. First operand 132 states and 144 transitions. Second operand 18 states. [2020-10-13 05:24:33,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:33,942 INFO L93 Difference]: Finished difference Result 171 states and 181 transitions. [2020-10-13 05:24:33,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 05:24:33,943 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 103 [2020-10-13 05:24:33,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:33,944 INFO L225 Difference]: With dead ends: 171 [2020-10-13 05:24:33,944 INFO L226 Difference]: Without dead ends: 107 [2020-10-13 05:24:33,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=182, Invalid=748, Unknown=0, NotChecked=0, Total=930 [2020-10-13 05:24:33,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-13 05:24:33,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2020-10-13 05:24:33,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 05:24:33,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions. [2020-10-13 05:24:33,962 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 103 [2020-10-13 05:24:33,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:33,962 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 105 transitions. [2020-10-13 05:24:33,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 05:24:33,962 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions. [2020-10-13 05:24:33,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 05:24:33,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:33,964 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:33,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 05:24:33,964 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:33,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:33,965 INFO L82 PathProgramCache]: Analyzing trace with hash -26108768, now seen corresponding path program 18 times [2020-10-13 05:24:33,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:33,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796349691] [2020-10-13 05:24:33,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:33,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:34,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:34,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:34,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:34,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:34,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:34,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:34,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:34,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:34,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:34,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:34,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:34,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:34,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:34,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:34,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:34,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:34,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:36,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:36,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:36,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:37,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:38,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:38,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:38,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:38,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:38,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:38,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:38,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 05:24:38,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-13 05:24:38,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 05:24:38,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:38,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 05:24:38,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:38,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 05:24:38,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:39,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:39,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:39,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:39,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:39,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:39,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:39,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:39,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:39,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:39,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:39,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:39,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:39,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:39,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:24:39,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:39,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:39,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:24:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:39,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:39,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:39,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:39,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:39,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:39,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:39,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:39,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:39,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:39,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:39,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:24:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:39,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:39,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:39,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:39,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:39,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:39,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:39,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:39,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:39,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:39,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:39,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:24:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:39,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:39,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:39,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:39,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:39,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:39,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:39,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:39,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:39,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:39,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:39,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:24:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:39,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:39,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:39,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:39,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:39,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:24:39,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:39,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:39,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:24:39,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:39,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:39,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:24:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:39,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:39,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:39,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:39,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:39,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:39,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:39,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:39,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:24:39,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:39,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:39,671 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 53 proven. 143 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-13 05:24:39,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796349691] [2020-10-13 05:24:39,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:39,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 05:24:39,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684504734] [2020-10-13 05:24:39,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 05:24:39,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:39,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 05:24:39,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2020-10-13 05:24:39,673 INFO L87 Difference]: Start difference. First operand 99 states and 105 transitions. Second operand 24 states. [2020-10-13 05:24:40,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:40,894 INFO L93 Difference]: Finished difference Result 119 states and 126 transitions. [2020-10-13 05:24:40,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 05:24:40,894 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 103 [2020-10-13 05:24:40,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:40,895 INFO L225 Difference]: With dead ends: 119 [2020-10-13 05:24:40,895 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 05:24:40,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=186, Invalid=1296, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 05:24:40,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 05:24:40,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-13 05:24:40,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-13 05:24:40,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2020-10-13 05:24:40,909 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 103 [2020-10-13 05:24:40,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:40,909 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2020-10-13 05:24:40,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 05:24:40,909 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2020-10-13 05:24:40,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 05:24:40,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:40,910 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:40,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 05:24:40,911 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:40,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:40,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1831547102, now seen corresponding path program 19 times [2020-10-13 05:24:40,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:40,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502291989] [2020-10-13 05:24:40,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:40,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:40,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:41,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:41,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:41,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:41,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:41,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:41,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:41,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:41,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:41,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:41,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:41,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:41,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:41,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:42,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:42,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:42,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:43,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:43,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:43,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:44,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:44,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:45,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:45,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 05:24:45,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-13 05:24:45,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 05:24:45,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:45,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 05:24:45,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:45,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 05:24:45,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:46,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:46,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:46,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:46,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:46,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:46,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:46,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:46,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:46,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:46,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:46,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:46,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:46,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:46,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:46,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:46,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:46,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:46,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:46,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:46,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:46,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:46,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:46,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:24:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:46,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:46,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:46,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:46,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:46,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:46,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:46,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:46,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:46,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:46,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:46,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:24:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:46,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:46,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:46,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:46,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:46,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:46,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:46,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:46,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:46,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:24:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:46,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:46,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:46,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:46,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:46,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:46,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:46,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:46,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:46,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:46,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:46,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:24:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:46,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:46,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:46,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:46,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:46,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:24:46,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:46,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:46,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:46,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:46,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:24:46,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:24:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:46,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:46,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:46,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:46,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:46,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:46,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:46,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:46,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:46,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:46,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 10 proven. 192 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-13 05:24:46,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502291989] [2020-10-13 05:24:46,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:46,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 05:24:46,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499256996] [2020-10-13 05:24:46,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 05:24:46,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:46,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 05:24:46,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2020-10-13 05:24:46,598 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand 23 states. [2020-10-13 05:24:48,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:48,458 INFO L93 Difference]: Finished difference Result 155 states and 170 transitions. [2020-10-13 05:24:48,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 05:24:48,460 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 103 [2020-10-13 05:24:48,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:48,461 INFO L225 Difference]: With dead ends: 155 [2020-10-13 05:24:48,461 INFO L226 Difference]: Without dead ends: 153 [2020-10-13 05:24:48,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=257, Invalid=1999, Unknown=0, NotChecked=0, Total=2256 [2020-10-13 05:24:48,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-13 05:24:48,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 140. [2020-10-13 05:24:48,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-13 05:24:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 151 transitions. [2020-10-13 05:24:48,481 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 151 transitions. Word has length 103 [2020-10-13 05:24:48,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:48,481 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 151 transitions. [2020-10-13 05:24:48,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 05:24:48,481 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 151 transitions. [2020-10-13 05:24:48,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 05:24:48,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:48,483 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:48,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 05:24:48,483 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:48,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:48,483 INFO L82 PathProgramCache]: Analyzing trace with hash -2013650981, now seen corresponding path program 20 times [2020-10-13 05:24:48,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:48,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820480518] [2020-10-13 05:24:48,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:48,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:48,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:48,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:48,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:48,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:48,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:48,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:48,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:48,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:48,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:48,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:49,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:49,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:49,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:49,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:49,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:49,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:49,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:49,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:49,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:53,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:53,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:53,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:53,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:53,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 05:24:53,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-13 05:24:53,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 05:24:53,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:53,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 05:24:53,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:24:53,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 05:24:53,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:54,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:24:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:54,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:54,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:54,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:24:54,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:54,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:54,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:54,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:24:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:54,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:54,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:54,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:54,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:54,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:54,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:54,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:54,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:54,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:54,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:54,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:24:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:54,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:54,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:54,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:54,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:54,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:54,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:54,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:54,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:54,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:54,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:54,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:24:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:54,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:54,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:54,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:54,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:54,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:54,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:54,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:54,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:54,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:54,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:54,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:24:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:54,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:54,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:54,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:54,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:54,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:24:54,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:54,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:54,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:24:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:54,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:54,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:54,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:54,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:54,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:54,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:54,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:54,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:54,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:54,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:54,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:24:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:54,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:54,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:54,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:54,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:54,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:24:54,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:54,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:24:54,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:24:54,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:24:54,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:54,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 05:24:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:54,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:54,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:24:54,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:24:54,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:24:54,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:24:54,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:24:54,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:24:54,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:24:54,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:24:54,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:24:54,154 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 44 proven. 188 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 05:24:54,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820480518] [2020-10-13 05:24:54,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:24:54,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 05:24:54,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416258614] [2020-10-13 05:24:54,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 05:24:54,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:24:54,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 05:24:54,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2020-10-13 05:24:54,156 INFO L87 Difference]: Start difference. First operand 140 states and 151 transitions. Second operand 22 states. [2020-10-13 05:24:56,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:24:56,229 INFO L93 Difference]: Finished difference Result 164 states and 179 transitions. [2020-10-13 05:24:56,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 05:24:56,229 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 112 [2020-10-13 05:24:56,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:24:56,231 INFO L225 Difference]: With dead ends: 164 [2020-10-13 05:24:56,231 INFO L226 Difference]: Without dead ends: 148 [2020-10-13 05:24:56,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=257, Invalid=1723, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 05:24:56,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-13 05:24:56,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 145. [2020-10-13 05:24:56,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-13 05:24:56,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 156 transitions. [2020-10-13 05:24:56,251 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 156 transitions. Word has length 112 [2020-10-13 05:24:56,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:24:56,251 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 156 transitions. [2020-10-13 05:24:56,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 05:24:56,251 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 156 transitions. [2020-10-13 05:24:56,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 05:24:56,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:24:56,252 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:24:56,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 05:24:56,253 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:24:56,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:24:56,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1270199065, now seen corresponding path program 21 times [2020-10-13 05:24:56,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:24:56,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349017804] [2020-10-13 05:24:56,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:24:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:24:56,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:56,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:58,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:58,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:58,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:58,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:58,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:24:58,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:01,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:01,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 05:25:01,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-13 05:25:01,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 05:25:01,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 05:25:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:25:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 05:25:01,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:01,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:01,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:01,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:01,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:01,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:01,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:01,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:01,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:01,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:01,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:01,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:01,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:01,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:01,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:01,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:01,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:01,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:25:01,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:01,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:01,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:01,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:01,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:01,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:25:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:01,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:01,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:01,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:01,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:01,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:01,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:01,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:01,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:01,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:01,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:01,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:25:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:01,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:01,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:01,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:01,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:01,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:01,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:01,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:01,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:01,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:01,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:01,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:25:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:01,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:01,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:01,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:01,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:01,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:01,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:01,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:01,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:01,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:01,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:01,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:25:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:01,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:01,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:01,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:01,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:01,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:01,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:01,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:01,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:01,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:01,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:01,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:25:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:01,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:01,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:01,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:01,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:01,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:01,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:01,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:01,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:01,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:01,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:01,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 05:25:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:01,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:01,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:01,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:01,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:01,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:01,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:01,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:01,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:01,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:01,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:01,818 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 18 proven. 215 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-13 05:25:01,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349017804] [2020-10-13 05:25:01,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:01,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 05:25:01,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717527120] [2020-10-13 05:25:01,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 05:25:01,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:01,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 05:25:01,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2020-10-13 05:25:01,820 INFO L87 Difference]: Start difference. First operand 145 states and 156 transitions. Second operand 23 states. [2020-10-13 05:25:03,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:03,841 INFO L93 Difference]: Finished difference Result 181 states and 198 transitions. [2020-10-13 05:25:03,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 05:25:03,841 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 112 [2020-10-13 05:25:03,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:03,843 INFO L225 Difference]: With dead ends: 181 [2020-10-13 05:25:03,843 INFO L226 Difference]: Without dead ends: 165 [2020-10-13 05:25:03,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=179, Invalid=1983, Unknown=0, NotChecked=0, Total=2162 [2020-10-13 05:25:03,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-13 05:25:03,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 149. [2020-10-13 05:25:03,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 05:25:03,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 160 transitions. [2020-10-13 05:25:03,864 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 160 transitions. Word has length 112 [2020-10-13 05:25:03,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:03,864 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 160 transitions. [2020-10-13 05:25:03,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 05:25:03,864 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 160 transitions. [2020-10-13 05:25:03,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 05:25:03,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:03,866 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:03,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 05:25:03,866 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:03,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:03,866 INFO L82 PathProgramCache]: Analyzing trace with hash 616098361, now seen corresponding path program 22 times [2020-10-13 05:25:03,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:03,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543225614] [2020-10-13 05:25:03,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:03,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:03,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:04,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:04,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:04,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:04,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:04,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:04,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:04,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:04,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:05,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:05,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:05,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:05,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:05,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:05,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:05,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:05,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:05,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:05,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:06,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:06,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:06,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:07,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:07,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:07,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:07,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:07,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:07,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:07,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:07,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:07,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:07,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:08,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:08,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:08,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:08,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:08,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:08,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:08,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:08,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 05:25:08,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 39 [2020-10-13 05:25:08,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 05:25:08,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:08,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 05:25:08,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:25:08,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 05:25:08,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:09,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:09,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:09,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:09,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:09,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:09,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:09,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:09,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:09,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:09,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:09,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:09,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:09,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:09,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:09,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:09,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:09,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:25:09,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:09,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:09,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:09,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:09,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:09,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:25:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:09,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:09,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:09,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:09,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:09,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:09,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:09,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:09,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:09,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:09,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:09,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:25:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:09,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:09,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:09,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:09,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:09,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:09,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:09,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:09,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:09,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:09,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:09,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:25:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:09,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:09,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:09,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:09,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:09,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:09,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:09,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:09,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:25:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:09,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:09,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:09,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:09,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:09,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:09,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:09,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:09,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:09,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:09,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:09,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 05:25:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:09,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:09,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:09,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:09,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:09,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:09,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:09,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:09,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:09,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:09,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:09,712 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 16 proven. 267 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-13 05:25:09,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543225614] [2020-10-13 05:25:09,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:09,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 05:25:09,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878646135] [2020-10-13 05:25:09,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 05:25:09,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:09,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 05:25:09,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2020-10-13 05:25:09,715 INFO L87 Difference]: Start difference. First operand 149 states and 160 transitions. Second operand 27 states. [2020-10-13 05:25:12,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:12,366 INFO L93 Difference]: Finished difference Result 159 states and 170 transitions. [2020-10-13 05:25:12,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-13 05:25:12,367 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 112 [2020-10-13 05:25:12,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:12,368 INFO L225 Difference]: With dead ends: 159 [2020-10-13 05:25:12,368 INFO L226 Difference]: Without dead ends: 157 [2020-10-13 05:25:12,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=351, Invalid=3189, Unknown=0, NotChecked=0, Total=3540 [2020-10-13 05:25:12,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-13 05:25:12,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 154. [2020-10-13 05:25:12,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-13 05:25:12,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 165 transitions. [2020-10-13 05:25:12,397 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 165 transitions. Word has length 112 [2020-10-13 05:25:12,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:12,397 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 165 transitions. [2020-10-13 05:25:12,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 05:25:12,398 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 165 transitions. [2020-10-13 05:25:12,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 05:25:12,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:12,399 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:12,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 05:25:12,399 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:12,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:12,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1656438332, now seen corresponding path program 23 times [2020-10-13 05:25:12,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:12,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832381767] [2020-10-13 05:25:12,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:12,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:12,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:12,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:12,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:12,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:12,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:12,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:12,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:12,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:12,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:12,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:12,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:12,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:12,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:13,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:13,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:13,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:13,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:13,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:13,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:13,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:13,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:14,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:14,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:17,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:17,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 05:25:17,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-13 05:25:17,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 05:25:17,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:17,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 05:25:17,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:25:17,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 05:25:17,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:17,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:17,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:17,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:17,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:17,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:17,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:17,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:17,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:17,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:17,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:17,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:17,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:17,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:17,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:17,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:17,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:17,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:25:17,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:17,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:17,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:17,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:17,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:18,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:25:18,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:18,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:18,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:18,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:18,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:18,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:18,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:18,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:18,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:18,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:18,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:18,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:25:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:18,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:18,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:18,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:18,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:18,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:18,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:18,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:18,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:18,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:25:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:18,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:18,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:18,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:18,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:18,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:18,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:18,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:18,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:18,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:18,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:18,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:25:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:18,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:18,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:18,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:18,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:18,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:18,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:18,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:18,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:18,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:18,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:18,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:25:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:18,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:18,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:18,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:18,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:18,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:18,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:18,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:18,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:18,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:18,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:18,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 05:25:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:18,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:18,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:18,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:18,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:18,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:18,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:18,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 05:25:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:18,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:18,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:18,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:18,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:18,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:18,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:18,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 14 proven. 257 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-13 05:25:18,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832381767] [2020-10-13 05:25:18,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:18,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 05:25:18,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385838091] [2020-10-13 05:25:18,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 05:25:18,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:18,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 05:25:18,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2020-10-13 05:25:18,058 INFO L87 Difference]: Start difference. First operand 154 states and 165 transitions. Second operand 26 states. [2020-10-13 05:25:20,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:20,387 INFO L93 Difference]: Finished difference Result 179 states and 196 transitions. [2020-10-13 05:25:20,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-13 05:25:20,388 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 121 [2020-10-13 05:25:20,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:20,389 INFO L225 Difference]: With dead ends: 179 [2020-10-13 05:25:20,389 INFO L226 Difference]: Without dead ends: 177 [2020-10-13 05:25:20,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=195, Invalid=2667, Unknown=0, NotChecked=0, Total=2862 [2020-10-13 05:25:20,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-13 05:25:20,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 159. [2020-10-13 05:25:20,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-13 05:25:20,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 172 transitions. [2020-10-13 05:25:20,413 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 172 transitions. Word has length 121 [2020-10-13 05:25:20,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:20,414 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 172 transitions. [2020-10-13 05:25:20,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 05:25:20,414 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 172 transitions. [2020-10-13 05:25:20,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 05:25:20,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:20,416 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:20,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 05:25:20,416 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:20,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:20,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1272521186, now seen corresponding path program 24 times [2020-10-13 05:25:20,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:20,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859463715] [2020-10-13 05:25:20,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:20,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:20,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:20,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:20,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:20,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:20,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:20,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:20,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:20,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:20,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:20,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:21,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:22,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:25,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:25,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 05:25:25,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 05:25:25,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 05:25:25,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:25,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 05:25:25,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:25:25,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 05:25:25,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:26,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:26,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:26,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:26,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:26,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:26,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:26,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:26,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:26,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:26,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:26,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:26,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:26,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:26,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:26,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:26,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:26,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:26,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:26,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:26,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:25:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:26,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:26,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:26,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:26,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:26,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:26,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:26,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:26,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:26,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:26,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:26,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:25:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:26,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:26,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:26,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:26,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:26,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:26,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:26,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:26,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:26,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:26,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:26,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:25:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:26,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:26,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:26,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:26,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:26,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:26,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:26,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:26,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:25:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:26,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:26,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:26,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:26,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:26,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:26,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:26,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:26,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:26,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:26,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:26,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 05:25:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:26,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:26,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:26,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:26,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:26,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:26,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:26,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:26,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:26,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:26,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:26,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 05:25:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:26,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:26,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:26,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:26,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:26,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:26,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:26,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 18 proven. 291 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 05:25:26,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859463715] [2020-10-13 05:25:26,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:26,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 05:25:26,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147356857] [2020-10-13 05:25:26,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 05:25:26,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:26,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 05:25:26,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-10-13 05:25:26,127 INFO L87 Difference]: Start difference. First operand 159 states and 172 transitions. Second operand 22 states. [2020-10-13 05:25:28,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:28,777 INFO L93 Difference]: Finished difference Result 184 states and 201 transitions. [2020-10-13 05:25:28,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 05:25:28,779 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 121 [2020-10-13 05:25:28,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:28,780 INFO L225 Difference]: With dead ends: 184 [2020-10-13 05:25:28,780 INFO L226 Difference]: Without dead ends: 168 [2020-10-13 05:25:28,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=221, Invalid=1941, Unknown=0, NotChecked=0, Total=2162 [2020-10-13 05:25:28,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-13 05:25:28,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2020-10-13 05:25:28,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-13 05:25:28,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 178 transitions. [2020-10-13 05:25:28,812 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 178 transitions. Word has length 121 [2020-10-13 05:25:28,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:28,813 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 178 transitions. [2020-10-13 05:25:28,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 05:25:28,813 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 178 transitions. [2020-10-13 05:25:28,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 05:25:28,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:28,814 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:28,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 05:25:28,815 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:28,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:28,815 INFO L82 PathProgramCache]: Analyzing trace with hash -841743495, now seen corresponding path program 25 times [2020-10-13 05:25:28,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:28,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687278358] [2020-10-13 05:25:28,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:28,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:28,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:29,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:29,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:29,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:29,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:29,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:29,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:29,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:29,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:29,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:31,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:33,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:33,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 05:25:33,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 05:25:33,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 05:25:33,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:33,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 05:25:33,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:25:33,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 05:25:33,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:34,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:34,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:34,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:34,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:34,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:34,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:34,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:34,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:34,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:34,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:34,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:34,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:25:34,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:34,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:34,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:34,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:34,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:25:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:34,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:34,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:34,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:34,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:34,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:34,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:34,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:34,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:34,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:34,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:25:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:34,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:34,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:34,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:34,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:34,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:34,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:34,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:34,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:34,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:34,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:25:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:34,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:34,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:34,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:34,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:34,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:34,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:34,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:34,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:34,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:34,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:25:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:34,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:34,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:34,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:34,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:34,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:34,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:34,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:34,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:34,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:34,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:25:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:34,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:34,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:34,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:34,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:34,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:34,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:34,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 05:25:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:34,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:34,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:34,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:34,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:34,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:34,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:34,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:34,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:34,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:34,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 05:25:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:34,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:34,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:34,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:34,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:34,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:34,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:34,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:34,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:34,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:34,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 05:25:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:34,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:34,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:34,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:34,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:34,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:25:34,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:34,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:34,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:25:34,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:34,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:34,330 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 60 proven. 246 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-13 05:25:34,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687278358] [2020-10-13 05:25:34,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:34,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 05:25:34,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225596573] [2020-10-13 05:25:34,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 05:25:34,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:34,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 05:25:34,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-13 05:25:34,332 INFO L87 Difference]: Start difference. First operand 164 states and 178 transitions. Second operand 22 states. [2020-10-13 05:25:35,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:35,943 INFO L93 Difference]: Finished difference Result 190 states and 208 transitions. [2020-10-13 05:25:35,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 05:25:35,944 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 130 [2020-10-13 05:25:35,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:35,945 INFO L225 Difference]: With dead ends: 190 [2020-10-13 05:25:35,946 INFO L226 Difference]: Without dead ends: 174 [2020-10-13 05:25:35,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=128, Invalid=1278, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 05:25:35,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-13 05:25:35,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 164. [2020-10-13 05:25:35,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-13 05:25:35,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 177 transitions. [2020-10-13 05:25:35,975 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 177 transitions. Word has length 130 [2020-10-13 05:25:35,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:35,977 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 177 transitions. [2020-10-13 05:25:35,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 05:25:35,977 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 177 transitions. [2020-10-13 05:25:35,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 05:25:35,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:35,979 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:35,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 05:25:35,980 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:35,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:35,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1852860745, now seen corresponding path program 26 times [2020-10-13 05:25:35,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:35,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806706000] [2020-10-13 05:25:35,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:36,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:36,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:36,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:36,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 05:25:36,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:25:36,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 740 [2020-10-13 05:25:36,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 05:25:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:25:36,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-13 05:25:36,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:37,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:37,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:37,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:37,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:37,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:37,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:37,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:37,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:37,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:37,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:37,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:37,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:37,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:37,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:37,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:37,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:37,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:25:37,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:37,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:25:37,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:37,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:25:37,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:37,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:25:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:37,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:37,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:37,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:37,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:37,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:37,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:37,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:37,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:25:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:37,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:37,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:37,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:37,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:37,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:37,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:37,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:37,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:37,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:37,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:37,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:25:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:37,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:37,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:37,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:37,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:37,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:37,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:37,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:37,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:37,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:37,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:25:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:37,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:37,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:37,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:37,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:37,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:37,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:37,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:37,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:25:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:37,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:37,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:37,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:37,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:37,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:37,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:37,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:37,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:37,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:37,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:37,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 05:25:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:37,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:37,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:37,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:37,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:37,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:37,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:37,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:37,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 05:25:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:37,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:37,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:37,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:37,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:37,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:37,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:37,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:37,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:37,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:37,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:37,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 05:25:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:37,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:37,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:37,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:37,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:37,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:37,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:37,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:37,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:37,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:37,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 180 proven. 118 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-13 05:25:37,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806706000] [2020-10-13 05:25:37,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:37,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 05:25:37,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437848404] [2020-10-13 05:25:37,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 05:25:37,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:37,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 05:25:37,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-10-13 05:25:37,505 INFO L87 Difference]: Start difference. First operand 164 states and 177 transitions. Second operand 21 states. [2020-10-13 05:25:38,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:38,821 INFO L93 Difference]: Finished difference Result 207 states and 217 transitions. [2020-10-13 05:25:38,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 05:25:38,822 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 130 [2020-10-13 05:25:38,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:38,824 INFO L225 Difference]: With dead ends: 207 [2020-10-13 05:25:38,824 INFO L226 Difference]: Without dead ends: 129 [2020-10-13 05:25:38,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=295, Invalid=1345, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 05:25:38,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-13 05:25:38,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 121. [2020-10-13 05:25:38,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-13 05:25:38,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2020-10-13 05:25:38,865 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 130 [2020-10-13 05:25:38,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:38,866 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2020-10-13 05:25:38,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 05:25:38,866 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2020-10-13 05:25:38,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 05:25:38,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:38,867 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:38,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 05:25:38,868 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:38,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:38,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1892082971, now seen corresponding path program 27 times [2020-10-13 05:25:38,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:38,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15058501] [2020-10-13 05:25:38,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:38,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:39,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:39,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:39,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:39,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:39,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:39,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:39,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:39,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:39,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:39,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:40,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:40,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:40,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:40,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:40,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:40,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:40,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:40,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:40,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:40,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:41,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:41,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:41,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:41,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:43,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:43,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 05:25:43,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-13 05:25:43,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 05:25:43,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:43,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 05:25:43,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:25:43,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 05:25:43,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:44,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:44,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:44,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:44,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:44,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:44,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:44,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:44,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:44,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:44,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:44,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:44,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:44,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:44,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:44,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:44,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:44,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:44,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:44,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:44,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:44,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:44,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:44,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:25:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:44,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:44,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:44,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:44,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:44,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:44,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:44,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:44,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:44,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:44,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:44,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:25:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:44,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:44,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:44,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:44,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:44,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:44,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:44,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:44,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:25:44,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:44,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:44,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:44,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:44,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:44,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:44,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:44,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:44,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:25:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:44,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:44,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:44,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:44,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:44,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:44,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:44,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:44,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:44,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:44,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:44,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 05:25:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:44,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:44,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:44,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:44,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:44,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:44,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:44,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:44,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:44,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:44,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:44,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 05:25:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:44,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:44,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:44,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:44,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:44,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:44,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:44,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:44,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:44,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 05:25:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:44,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:44,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:44,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:44,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:44,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:44,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:44,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:44,722 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 14 proven. 333 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-13 05:25:44,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15058501] [2020-10-13 05:25:44,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:44,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 05:25:44,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408816498] [2020-10-13 05:25:44,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 05:25:44,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:44,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 05:25:44,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=646, Unknown=0, NotChecked=0, Total=702 [2020-10-13 05:25:44,724 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand 27 states. [2020-10-13 05:25:47,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:47,741 INFO L93 Difference]: Finished difference Result 137 states and 145 transitions. [2020-10-13 05:25:47,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-13 05:25:47,742 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 130 [2020-10-13 05:25:47,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:47,743 INFO L225 Difference]: With dead ends: 137 [2020-10-13 05:25:47,744 INFO L226 Difference]: Without dead ends: 135 [2020-10-13 05:25:47,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=303, Invalid=3003, Unknown=0, NotChecked=0, Total=3306 [2020-10-13 05:25:47,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-13 05:25:47,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2020-10-13 05:25:47,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-13 05:25:47,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 138 transitions. [2020-10-13 05:25:47,769 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 138 transitions. Word has length 130 [2020-10-13 05:25:47,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:47,770 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 138 transitions. [2020-10-13 05:25:47,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 05:25:47,770 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 138 transitions. [2020-10-13 05:25:47,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-13 05:25:47,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:47,771 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:47,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 05:25:47,771 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:47,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:47,772 INFO L82 PathProgramCache]: Analyzing trace with hash -604065278, now seen corresponding path program 28 times [2020-10-13 05:25:47,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:47,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692377127] [2020-10-13 05:25:47,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:47,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:47,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:48,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:48,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:48,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:48,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:48,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:48,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:48,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:48,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:48,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:48,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:48,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:48,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:48,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:48,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:48,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:48,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:48,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:48,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:49,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:52,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:52,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 05:25:52,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-13 05:25:52,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 05:25:52,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:52,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 05:25:52,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:25:52,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 05:25:52,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:53,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:25:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:53,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:53,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:53,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:25:53,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:53,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:53,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:53,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:53,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:25:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:53,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:53,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:53,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:53,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:53,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:53,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:53,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:25:53,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:53,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:25:53,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:53,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:25:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:53,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:53,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:53,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:53,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:53,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:53,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:53,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:53,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:53,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:53,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:53,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:25:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:53,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:53,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:53,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:53,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:53,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:53,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:53,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:53,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:53,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:53,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:25:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:53,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:53,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:53,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:53,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:53,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:53,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:53,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:53,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:53,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:53,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:53,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:25:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:53,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:53,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:53,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:53,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:53,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:53,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:53,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:53,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 05:25:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:53,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:53,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:53,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:53,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:53,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:25:53,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:53,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:53,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 05:25:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:53,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:53,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:53,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:53,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:53,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:53,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:53,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:53,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:53,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:53,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:53,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 05:25:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:53,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:53,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:53,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:53,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:53,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:53,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:53,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:53,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:53,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:53,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:53,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 05:25:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:53,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:53,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:25:53,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:25:53,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:25:53,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:25:53,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:25:53,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:25:53,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:25:53,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:25:53,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:25:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 24 proven. 356 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-13 05:25:53,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692377127] [2020-10-13 05:25:53,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:25:53,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 05:25:53,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494926010] [2020-10-13 05:25:53,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 05:25:53,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:25:53,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 05:25:53,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-13 05:25:53,304 INFO L87 Difference]: Start difference. First operand 131 states and 138 transitions. Second operand 21 states. [2020-10-13 05:25:55,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:25:55,387 INFO L93 Difference]: Finished difference Result 172 states and 184 transitions. [2020-10-13 05:25:55,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 05:25:55,388 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 139 [2020-10-13 05:25:55,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:25:55,389 INFO L225 Difference]: With dead ends: 172 [2020-10-13 05:25:55,389 INFO L226 Difference]: Without dead ends: 156 [2020-10-13 05:25:55,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=149, Invalid=1491, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 05:25:55,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-13 05:25:55,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 136. [2020-10-13 05:25:55,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-13 05:25:55,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 144 transitions. [2020-10-13 05:25:55,415 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 144 transitions. Word has length 139 [2020-10-13 05:25:55,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:25:55,416 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 144 transitions. [2020-10-13 05:25:55,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 05:25:55,416 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 144 transitions. [2020-10-13 05:25:55,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 05:25:55,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:25:55,417 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:25:55,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 05:25:55,417 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:25:55,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:25:55,418 INFO L82 PathProgramCache]: Analyzing trace with hash 319912187, now seen corresponding path program 29 times [2020-10-13 05:25:55,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:25:55,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495779546] [2020-10-13 05:25:55,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:25:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:25:55,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:55,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:55,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:55,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:55,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:55,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:55,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:55,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:55,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:55,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:55,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:55,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:55,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:55,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:56,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:56,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:56,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:56,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:56,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:56,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:56,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:25:57,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:00,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:00,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 05:26:00,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-13 05:26:00,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 05:26:00,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 05:26:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:26:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 05:26:00,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:01,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:01,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:01,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:01,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:01,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:26:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:01,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:26:01,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:01,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:26:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:01,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:01,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:01,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:26:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:01,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:01,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:01,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:01,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:01,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:26:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:01,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:01,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:01,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:01,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:01,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:26:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:01,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:01,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:01,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:01,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:01,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 05:26:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:01,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:01,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:01,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 05:26:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:01,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:01,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:01,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:01,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:01,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 05:26:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:01,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:01,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:01,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:01,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:01,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 05:26:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:01,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:26:01,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:01,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:26:01,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:01,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 05:26:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:01,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:01,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:01,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:01,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:01,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:26:01,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:01,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:01,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:26:01,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:01,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 101 proven. 326 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-10-13 05:26:01,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495779546] [2020-10-13 05:26:01,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:01,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 05:26:01,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034070540] [2020-10-13 05:26:01,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 05:26:01,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:01,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 05:26:01,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2020-10-13 05:26:01,418 INFO L87 Difference]: Start difference. First operand 136 states and 144 transitions. Second operand 27 states. [2020-10-13 05:26:04,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:04,344 INFO L93 Difference]: Finished difference Result 156 states and 165 transitions. [2020-10-13 05:26:04,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 05:26:04,345 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 148 [2020-10-13 05:26:04,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:04,346 INFO L225 Difference]: With dead ends: 156 [2020-10-13 05:26:04,347 INFO L226 Difference]: Without dead ends: 135 [2020-10-13 05:26:04,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2020-10-13 05:26:04,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-13 05:26:04,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-10-13 05:26:04,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-13 05:26:04,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 141 transitions. [2020-10-13 05:26:04,373 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 141 transitions. Word has length 148 [2020-10-13 05:26:04,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:04,374 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 141 transitions. [2020-10-13 05:26:04,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 05:26:04,374 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 141 transitions. [2020-10-13 05:26:04,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 05:26:04,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:04,375 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:04,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 05:26:04,375 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:04,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:04,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1485526147, now seen corresponding path program 30 times [2020-10-13 05:26:04,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:04,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705172963] [2020-10-13 05:26:04,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:04,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:04,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:04,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:04,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:04,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:04,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:04,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:04,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:04,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:04,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:04,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:04,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:04,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:05,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:05,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:05,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:05,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:05,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:05,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:05,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:05,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:05,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:05,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:05,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:05,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:05,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:05,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:06,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:09,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:09,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 05:26:09,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-13 05:26:09,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 05:26:09,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 05:26:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:26:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-13 05:26:09,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:10,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:10,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:10,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:10,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:10,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:10,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:10,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:10,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:10,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:10,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:10,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:26:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:10,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:10,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:10,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:10,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:10,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:10,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:10,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:10,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:10,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:10,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:10,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:26:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:10,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:10,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:10,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:10,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:10,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:26:10,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:10,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:10,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:10,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:10,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:10,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:26:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:10,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:10,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:10,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:10,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:10,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:10,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:10,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:10,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:10,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:10,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:10,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:26:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:10,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:10,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:10,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:10,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:10,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:10,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:10,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:10,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:26:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:10,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:10,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:10,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:10,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:10,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:10,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:10,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:10,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 05:26:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:10,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:10,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:10,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:10,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:10,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:10,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:10,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:10,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:10,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:10,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:10,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 05:26:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:10,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:10,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:10,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:10,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:10,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:10,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:10,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:10,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 05:26:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:10,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:10,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:10,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:10,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:10,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:10,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:10,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:10,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 05:26:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:10,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:10,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:10,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:10,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:10,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:10,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:10,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:10,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:10,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:10,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:10,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 05:26:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:10,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:10,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:10,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:10,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:10,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:10,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:10,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:10,230 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 18 proven. 412 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-13 05:26:10,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705172963] [2020-10-13 05:26:10,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:10,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 05:26:10,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757914944] [2020-10-13 05:26:10,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 05:26:10,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:10,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 05:26:10,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=702, Unknown=0, NotChecked=0, Total=756 [2020-10-13 05:26:10,233 INFO L87 Difference]: Start difference. First operand 135 states and 141 transitions. Second operand 28 states. [2020-10-13 05:26:13,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:13,246 INFO L93 Difference]: Finished difference Result 212 states and 233 transitions. [2020-10-13 05:26:13,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-13 05:26:13,247 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 148 [2020-10-13 05:26:13,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:13,248 INFO L225 Difference]: With dead ends: 212 [2020-10-13 05:26:13,248 INFO L226 Difference]: Without dead ends: 210 [2020-10-13 05:26:13,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=218, Invalid=3088, Unknown=0, NotChecked=0, Total=3306 [2020-10-13 05:26:13,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-13 05:26:13,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 197. [2020-10-13 05:26:13,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-13 05:26:13,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 214 transitions. [2020-10-13 05:26:13,290 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 214 transitions. Word has length 148 [2020-10-13 05:26:13,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:13,290 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 214 transitions. [2020-10-13 05:26:13,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 05:26:13,291 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 214 transitions. [2020-10-13 05:26:13,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 05:26:13,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:13,292 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:13,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 05:26:13,292 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:13,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:13,293 INFO L82 PathProgramCache]: Analyzing trace with hash 697104864, now seen corresponding path program 31 times [2020-10-13 05:26:13,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:13,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287702369] [2020-10-13 05:26:13,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:13,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:13,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:14,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:14,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:14,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:14,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:14,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:14,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:14,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:14,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:14,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:14,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:14,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:14,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:15,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:15,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:15,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:15,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:15,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:15,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:15,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:15,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:16,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:18,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:18,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:18,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-13 05:26:18,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-13 05:26:18,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 05:26:18,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:18,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 05:26:18,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:26:18,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 05:26:18,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:19,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:19,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:19,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:19,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:19,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:19,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:19,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:19,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:19,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:26:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:19,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:19,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:19,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:19,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:19,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:26:19,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:19,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:19,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:19,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:19,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:19,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:26:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:19,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:19,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:19,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:19,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:19,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:19,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:19,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:19,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:19,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:19,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:19,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:26:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:19,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:19,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:19,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:19,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:19,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:19,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:19,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:19,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:26:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:19,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:19,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:19,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:19,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:19,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:19,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:19,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:19,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:26:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:19,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:19,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:19,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:19,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:19,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:19,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:19,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:19,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 05:26:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:19,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:19,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:19,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:19,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:19,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:19,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:19,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:19,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 05:26:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:19,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:19,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:19,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:19,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:19,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:19,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:19,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:19,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:19,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:19,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 05:26:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:19,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:19,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:19,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:19,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:19,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:19,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:19,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:19,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:19,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:19,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:19,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 05:26:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:19,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:19,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:19,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:19,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:19,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:19,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:19,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:19,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 05:26:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:19,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:19,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:19,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:19,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:19,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:19,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:19,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:19,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:19,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:19,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:19,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-13 05:26:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:19,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:19,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:19,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:19,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:19,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:26:19,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:26:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:19,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:19,148 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 76 proven. 402 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2020-10-13 05:26:19,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287702369] [2020-10-13 05:26:19,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:19,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 05:26:19,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264737024] [2020-10-13 05:26:19,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 05:26:19,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:19,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 05:26:19,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2020-10-13 05:26:19,150 INFO L87 Difference]: Start difference. First operand 197 states and 214 transitions. Second operand 26 states. [2020-10-13 05:26:23,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:23,017 INFO L93 Difference]: Finished difference Result 223 states and 244 transitions. [2020-10-13 05:26:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-13 05:26:23,018 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 157 [2020-10-13 05:26:23,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:23,020 INFO L225 Difference]: With dead ends: 223 [2020-10-13 05:26:23,020 INFO L226 Difference]: Without dead ends: 207 [2020-10-13 05:26:23,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=237, Invalid=2843, Unknown=0, NotChecked=0, Total=3080 [2020-10-13 05:26:23,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-13 05:26:23,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 197. [2020-10-13 05:26:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-13 05:26:23,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 213 transitions. [2020-10-13 05:26:23,063 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 213 transitions. Word has length 157 [2020-10-13 05:26:23,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:23,063 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 213 transitions. [2020-10-13 05:26:23,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 05:26:23,064 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 213 transitions. [2020-10-13 05:26:23,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 05:26:23,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:23,065 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:23,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 05:26:23,065 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:23,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:23,066 INFO L82 PathProgramCache]: Analyzing trace with hash -314012386, now seen corresponding path program 32 times [2020-10-13 05:26:23,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:23,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416240690] [2020-10-13 05:26:23,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:23,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:23,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:24,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:24,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-13 05:26:24,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:26:24,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1635 [2020-10-13 05:26:24,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:24,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 05:26:24,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 05:26:24,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-13 05:26:24,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:25,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:26:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:25,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:25,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:25,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:26:25,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:25,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:25,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:25,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:26:25,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:25,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:26:25,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:25,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 05:26:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:25,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:25,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:25,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:25,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:25,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:26:25,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:26:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:26:25,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:25,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:26:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:25,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:25,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:25,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:25,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:25,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:25,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:25,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:25,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:26:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:25,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:25,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:25,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:25,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:25,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:25,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:25,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:25,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:25,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:25,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:25,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:26:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:25,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:25,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:25,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:25,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:25,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:25,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:25,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:25,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:25,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:25,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:25,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:26:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:25,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:25,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:25,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:25,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:25,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:25,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:25,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:25,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:25,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:25,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:25,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 05:26:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:25,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:25,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:25,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:25,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:25,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:25,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:25,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:25,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:25,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:25,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:25,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 05:26:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:25,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:25,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:25,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:25,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:25,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:25,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:25,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:25,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:25,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:25,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:25,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 05:26:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:25,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:25,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:25,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:25,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:25,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:25,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:25,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:25,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:25,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:25,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:25,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 05:26:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:25,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:25,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:25,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:25,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:25,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:25,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:25,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:25,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:25,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:25,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:25,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 05:26:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:25,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:25,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:25,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:25,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:25,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:25,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:25,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:25,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-13 05:26:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:25,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:25,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:25,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:26:25,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:26:25,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:26:25,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:25,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:26:25,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:26:25,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:26:25,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:26:25,577 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 275 proven. 195 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-10-13 05:26:25,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416240690] [2020-10-13 05:26:25,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:26:25,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 05:26:25,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159080733] [2020-10-13 05:26:25,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 05:26:25,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:26:25,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 05:26:25,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-10-13 05:26:25,578 INFO L87 Difference]: Start difference. First operand 197 states and 213 transitions. Second operand 24 states. [2020-10-13 05:26:27,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:26:27,274 INFO L93 Difference]: Finished difference Result 244 states and 256 transitions. [2020-10-13 05:26:27,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 05:26:27,275 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 157 [2020-10-13 05:26:27,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:26:27,277 INFO L225 Difference]: With dead ends: 244 [2020-10-13 05:26:27,277 INFO L226 Difference]: Without dead ends: 152 [2020-10-13 05:26:27,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=317, Invalid=1323, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 05:26:27,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-13 05:26:27,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 144. [2020-10-13 05:26:27,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-13 05:26:27,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 150 transitions. [2020-10-13 05:26:27,296 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 150 transitions. Word has length 157 [2020-10-13 05:26:27,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:26:27,297 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 150 transitions. [2020-10-13 05:26:27,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 05:26:27,297 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 150 transitions. [2020-10-13 05:26:27,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 05:26:27,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:26:27,298 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 10, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:26:27,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 05:26:27,299 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:26:27,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:26:27,299 INFO L82 PathProgramCache]: Analyzing trace with hash 499001798, now seen corresponding path program 33 times [2020-10-13 05:26:27,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:26:27,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945831632] [2020-10-13 05:26:27,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:26:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:26:27,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:27,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:27,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:27,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:27,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:27,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:27,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:27,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:27,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:27,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:27,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:27,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:27,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:28,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:29,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:26:32,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:26:32,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-13 05:26:32,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-13 05:26:32,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 05:26:32,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:26:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 05:26:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:26:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 05:26:32,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0