/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-crafted/bor1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 04:29:59,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 04:29:59,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 04:29:59,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 04:29:59,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 04:29:59,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 04:29:59,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 04:29:59,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 04:29:59,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 04:29:59,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 04:29:59,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 04:29:59,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 04:29:59,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 04:29:59,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 04:29:59,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 04:29:59,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 04:29:59,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 04:29:59,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 04:29:59,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 04:29:59,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 04:29:59,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 04:29:59,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 04:29:59,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 04:29:59,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 04:29:59,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 04:29:59,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 04:29:59,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 04:29:59,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 04:29:59,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 04:29:59,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 04:29:59,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 04:29:59,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 04:29:59,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 04:29:59,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 04:29:59,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 04:29:59,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 04:29:59,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 04:29:59,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 04:29:59,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 04:29:59,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 04:29:59,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 04:29:59,546 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 04:29:59,568 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 04:29:59,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 04:29:59,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 04:29:59,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 04:29:59,570 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 04:29:59,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 04:29:59,570 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 04:29:59,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 04:29:59,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 04:29:59,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 04:29:59,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 04:29:59,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 04:29:59,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 04:29:59,571 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 04:29:59,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 04:29:59,572 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 04:29:59,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 04:29:59,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 04:29:59,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 04:29:59,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 04:29:59,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 04:29:59,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 04:29:59,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 04:29:59,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 04:29:59,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 04:29:59,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 04:29:59,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 04:29:59,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 04:29:59,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 04:29:59,574 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 04:29:59,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 04:29:59,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 04:29:59,904 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 04:29:59,906 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 04:29:59,908 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 04:29:59,908 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bor1.i [2020-10-13 04:29:59,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7800312a/945538e84750405fb5fa71a3f066236b/FLAG3ac191add [2020-10-13 04:30:00,461 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 04:30:00,462 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bor1.i [2020-10-13 04:30:00,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7800312a/945538e84750405fb5fa71a3f066236b/FLAG3ac191add [2020-10-13 04:30:00,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7800312a/945538e84750405fb5fa71a3f066236b [2020-10-13 04:30:00,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 04:30:00,844 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 04:30:00,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 04:30:00,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 04:30:00,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 04:30:00,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:30:00" (1/1) ... [2020-10-13 04:30:00,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337988d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:00, skipping insertion in model container [2020-10-13 04:30:00,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:30:00" (1/1) ... [2020-10-13 04:30:00,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 04:30:00,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 04:30:01,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:30:01,090 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 04:30:01,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:30:01,130 INFO L208 MainTranslator]: Completed translation [2020-10-13 04:30:01,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:01 WrapperNode [2020-10-13 04:30:01,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 04:30:01,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 04:30:01,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 04:30:01,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 04:30:01,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:01" (1/1) ... [2020-10-13 04:30:01,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:01" (1/1) ... [2020-10-13 04:30:01,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:01" (1/1) ... [2020-10-13 04:30:01,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:01" (1/1) ... [2020-10-13 04:30:01,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:01" (1/1) ... [2020-10-13 04:30:01,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:01" (1/1) ... [2020-10-13 04:30:01,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:01" (1/1) ... [2020-10-13 04:30:01,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 04:30:01,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 04:30:01,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 04:30:01,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 04:30:01,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:01" (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 04:30:01,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 04:30:01,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 04:30:01,315 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2020-10-13 04:30:01,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 04:30:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 04:30:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 04:30:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2020-10-13 04:30:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 04:30:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 04:30:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 04:30:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 04:30:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 04:30:01,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 04:30:01,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 04:30:01,635 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 04:30:01,636 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 04:30:01,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:30:01 BoogieIcfgContainer [2020-10-13 04:30:01,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 04:30:01,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 04:30:01,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 04:30:01,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 04:30:01,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:30:00" (1/3) ... [2020-10-13 04:30:01,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4915ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:30:01, skipping insertion in model container [2020-10-13 04:30:01,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:01" (2/3) ... [2020-10-13 04:30:01,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4915ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:30:01, skipping insertion in model container [2020-10-13 04:30:01,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:30:01" (3/3) ... [2020-10-13 04:30:01,657 INFO L109 eAbstractionObserver]: Analyzing ICFG bor1.i [2020-10-13 04:30:01,676 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 04:30:01,685 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 04:30:01,701 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 04:30:01,723 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 04:30:01,723 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 04:30:01,723 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 04:30:01,723 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 04:30:01,724 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 04:30:01,724 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 04:30:01,724 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 04:30:01,724 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 04:30:01,741 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-13 04:30:01,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 04:30:01,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:01,747 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:01,748 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:01,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:01,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-13 04:30:01,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:01,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228693124] [2020-10-13 04:30:01,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:01,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:01,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:01,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:02,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:02,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:02,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:02,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 04:30:02,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:02,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 845 [2020-10-13 04:30:02,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:02,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:02,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:30:02,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:02,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 04:30:02,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:02,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:02,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:02,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:02,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:02,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 04:30:02,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:02,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:02,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:30:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:02,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:02,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:02,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:02,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:02,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:02,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:30:02,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:02,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:02,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:02,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:02,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:02,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 04:30:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:02,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:02,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:02,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:02,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:02,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:02,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:30:02,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:02,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:02,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:30:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:02,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:02,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:02,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:02,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:02,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:02,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:30:02,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:02,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:02,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:02,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:02,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:02,873 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 04:30:02,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228693124] [2020-10-13 04:30:02,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:30:02,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 04:30:02,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341419973] [2020-10-13 04:30:02,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 04:30:02,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:02,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 04:30:02,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 04:30:02,900 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-13 04:30:02,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:02,997 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-13 04:30:02,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 04:30:02,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 04:30:02,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:03,008 INFO L225 Difference]: With dead ends: 54 [2020-10-13 04:30:03,009 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 04:30:03,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 04:30:03,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 04:30:03,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-13 04:30:03,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 04:30:03,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-13 04:30:03,058 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-13 04:30:03,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:03,059 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-13 04:30:03,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 04:30:03,059 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-13 04:30:03,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 04:30:03,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:03,062 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:03,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 04:30:03,063 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:03,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:03,063 INFO L82 PathProgramCache]: Analyzing trace with hash 721846027, now seen corresponding path program 1 times [2020-10-13 04:30:03,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:03,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663481031] [2020-10-13 04:30:03,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:03,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:03,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:03,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:03,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:03,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:03,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:03,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 04:30:03,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:03,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 917 [2020-10-13 04:30:03,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:03,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:03,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 04:30:03,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:03,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:04,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:04,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:04,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:04,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:04,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:04,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:30:04,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:04,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:04,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:04,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:30:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:04,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:04,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:04,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:04,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:04,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 04:30:04,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:30:04,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:04,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:04,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 04:30:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:04,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:04,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:04,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:04,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:04,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:04,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:30:04,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:04,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:04,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:30:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:04,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:04,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:04,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:04,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:04,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:04,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 04:30:04,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:04,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:04,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:04,088 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 04:30:04,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663481031] [2020-10-13 04:30:04,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:04,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 04:30:04,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782156127] [2020-10-13 04:30:04,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:30:04,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:04,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:30:04,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:04,092 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-13 04:30:04,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:04,182 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-13 04:30:04,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:30:04,183 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 04:30:04,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:04,184 INFO L225 Difference]: With dead ends: 45 [2020-10-13 04:30:04,184 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 04:30:04,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:04,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 04:30:04,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-13 04:30:04,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 04:30:04,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 04:30:04,194 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-13 04:30:04,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:04,195 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 04:30:04,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:30:04,195 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 04:30:04,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 04:30:04,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:04,197 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:04,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 04:30:04,197 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:04,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:04,198 INFO L82 PathProgramCache]: Analyzing trace with hash 540504713, now seen corresponding path program 1 times [2020-10-13 04:30:04,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:04,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142982551] [2020-10-13 04:30:04,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:04,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:04,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:04,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:04,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:04,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:06,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 04:30:06,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:06,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1976 [2020-10-13 04:30:06,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:06,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:06,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 04:30:06,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:06,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:06,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:06,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:06,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:06,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:06,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:30:06,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:06,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:06,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:06,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:06,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:06,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:30:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:06,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:06,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:06,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:06,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:30:06,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:06,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:06,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:06,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 04:30:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:06,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:06,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:06,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:06,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:30:06,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:06,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:06,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:06,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:30:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:06,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:06,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:06,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:06,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:30:06,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:06,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:06,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:06,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:06,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 04:30:06,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142982551] [2020-10-13 04:30:06,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:30:06,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 04:30:06,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592695903] [2020-10-13 04:30:06,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:30:06,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:06,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:30:06,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:06,310 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-13 04:30:06,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:06,389 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-13 04:30:06,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:30:06,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-13 04:30:06,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:06,391 INFO L225 Difference]: With dead ends: 42 [2020-10-13 04:30:06,392 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 04:30:06,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 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 04:30:06,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 04:30:06,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-13 04:30:06,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 04:30:06,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 04:30:06,399 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 38 [2020-10-13 04:30:06,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:06,401 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 04:30:06,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:30:06,402 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 04:30:06,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 04:30:06,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:06,403 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 04:30:06,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 04:30:06,404 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:06,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:06,404 INFO L82 PathProgramCache]: Analyzing trace with hash -107343225, now seen corresponding path program 1 times [2020-10-13 04:30:06,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:06,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962742846] [2020-10-13 04:30:06,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:06,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:09,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:09,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 04:30:09,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:09,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3047 [2020-10-13 04:30:09,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:09,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:09,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:09,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:09,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:09,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:09,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:09,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:09,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:09,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:09,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:30:09,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:09,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:09,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:30:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:09,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:09,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:09,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:09,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:09,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:09,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:30:09,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:09,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:09,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:09,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:09,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 04:30:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:09,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:09,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:09,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:09,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:09,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:09,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:30:09,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:09,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:09,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:09,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:09,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:09,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:30:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:09,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:09,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:09,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:09,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:09,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:09,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:30:09,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:09,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:09,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:09,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:09,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 04:30:09,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962742846] [2020-10-13 04:30:09,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:30:09,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 04:30:09,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734381618] [2020-10-13 04:30:09,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:30:09,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:09,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:30:09,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:09,614 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-13 04:30:09,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:09,726 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-13 04:30:09,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:30:09,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 04:30:09,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:09,728 INFO L225 Difference]: With dead ends: 50 [2020-10-13 04:30:09,728 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 04:30:09,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 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 04:30:09,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 04:30:09,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 04:30:09,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 04:30:09,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 04:30:09,745 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-13 04:30:09,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:09,745 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 04:30:09,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:30:09,746 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 04:30:09,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 04:30:09,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:09,747 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 04:30:09,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 04:30:09,748 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:09,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:09,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1550668567, now seen corresponding path program 1 times [2020-10-13 04:30:09,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:09,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690905032] [2020-10-13 04:30:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:09,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:09,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:09,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:09,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:13,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:13,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 04:30:13,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:13,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3980 [2020-10-13 04:30:13,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:13,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 04:30:13,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:13,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:13,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:13,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:13,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:13,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:13,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:13,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:30:13,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:13,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:13,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:13,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:13,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:13,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 04:30:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:13,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:13,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:13,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:13,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:13,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 04:30:13,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:13,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:13,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:30:13,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:13,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 04:30:13,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 04:30:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:13,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:13,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:13,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:13,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:13,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:13,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:30:13,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:13,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:13,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:13,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:30:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:13,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:13,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:13,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:13,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:13,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:13,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:30:13,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:13,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:13,857 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 04:30:13,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690905032] [2020-10-13 04:30:13,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:13,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:30:13,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715800863] [2020-10-13 04:30:13,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:30:13,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:13,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:30:13,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:13,862 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-13 04:30:14,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:14,027 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-13 04:30:14,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:30:14,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-13 04:30:14,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:14,030 INFO L225 Difference]: With dead ends: 51 [2020-10-13 04:30:14,032 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 04:30:14,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:30:14,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 04:30:14,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 04:30:14,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 04:30:14,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 04:30:14,044 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-13 04:30:14,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:14,046 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 04:30:14,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:30:14,046 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 04:30:14,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 04:30:14,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:14,048 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:14,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 04:30:14,049 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:14,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:14,050 INFO L82 PathProgramCache]: Analyzing trace with hash 428974311, now seen corresponding path program 2 times [2020-10-13 04:30:14,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:14,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33164150] [2020-10-13 04:30:14,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:14,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:14,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:19,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 04:30:19,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:19,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:30:19,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:19,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:19,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:19,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:19,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:19,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:19,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:30:19,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:19,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:19,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:19,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:19,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:19,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 04:30:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:19,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:19,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:19,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:19,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:30:19,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:19,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:19,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:19,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:19,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:19,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:30:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:19,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:19,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:19,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:19,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:30:19,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:19,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:19,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:19,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:19,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:19,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:30:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:19,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:19,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:19,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:19,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:30:19,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:19,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:19,182 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-13 04:30:19,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33164150] [2020-10-13 04:30:19,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:19,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:30:19,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031831906] [2020-10-13 04:30:19,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:30:19,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:19,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:30:19,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:19,187 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-13 04:30:19,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:19,283 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-10-13 04:30:19,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:30:19,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-13 04:30:19,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:19,285 INFO L225 Difference]: With dead ends: 56 [2020-10-13 04:30:19,285 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 04:30:19,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 04:30:19,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 04:30:19,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 04:30:19,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 04:30:19,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 04:30:19,300 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 48 [2020-10-13 04:30:19,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:19,302 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 04:30:19,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:30:19,302 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 04:30:19,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 04:30:19,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:19,304 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:19,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 04:30:19,305 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:19,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:19,305 INFO L82 PathProgramCache]: Analyzing trace with hash 948091209, now seen corresponding path program 3 times [2020-10-13 04:30:19,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:19,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856776485] [2020-10-13 04:30:19,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:19,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:19,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:24,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 04:30:24,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:24,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:30:24,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 04:30:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:24,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:24,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:24,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:24,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:24,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:30:24,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:24,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:24,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 04:30:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:24,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:24,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:24,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:30:24,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:24,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:24,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:24,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:24,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:24,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 04:30:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:24,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:24,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:24,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:30:24,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:24,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:24,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:30:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:24,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:24,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:24,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:30:24,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:24,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 04:30:24,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856776485] [2020-10-13 04:30:24,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:24,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:30:24,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407620227] [2020-10-13 04:30:24,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:30:24,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:24,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:30:24,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:24,440 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-13 04:30:24,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:24,574 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-13 04:30:24,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:30:24,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-13 04:30:24,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:24,576 INFO L225 Difference]: With dead ends: 51 [2020-10-13 04:30:24,577 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 04:30:24,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 04:30:24,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 04:30:24,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 04:30:24,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 04:30:24,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-13 04:30:24,590 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 50 [2020-10-13 04:30:24,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:24,591 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-13 04:30:24,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:30:24,592 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-13 04:30:24,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 04:30:24,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:24,594 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:24,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 04:30:24,595 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:24,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:24,596 INFO L82 PathProgramCache]: Analyzing trace with hash -629434041, now seen corresponding path program 4 times [2020-10-13 04:30:24,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:24,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455163823] [2020-10-13 04:30:24,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:25,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:29,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 04:30:29,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:29,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:30:29,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:29,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:30:29,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 04:30:29,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:30:29,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:29,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:29,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:29,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:29,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:29,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:29,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:29,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:29,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:29,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:29,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:29,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 04:30:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:29,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:29,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:29,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:29,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:30:29,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:29,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:29,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:29,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 04:30:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:29,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:29,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:29,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:29,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:30:29,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:29,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:29,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:29,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:29,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:29,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 04:30:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:29,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:29,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:29,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:29,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:30:29,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:29,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:30:29,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:30:29,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:30:29,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-13 04:30:29,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455163823] [2020-10-13 04:30:29,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:29,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:30:29,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114919370] [2020-10-13 04:30:29,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:30:29,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:29,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:30:29,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:30:29,725 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-13 04:30:29,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:29,840 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-10-13 04:30:29,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:30:29,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-13 04:30:29,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:29,842 INFO L225 Difference]: With dead ends: 61 [2020-10-13 04:30:29,842 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 04:30:29,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:30:29,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 04:30:29,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 04:30:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 04:30:29,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-13 04:30:29,855 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-13 04:30:29,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:29,858 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-13 04:30:29,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:30:29,858 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-13 04:30:29,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 04:30:29,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:29,860 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:29,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 04:30:29,862 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:29,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:29,863 INFO L82 PathProgramCache]: Analyzing trace with hash -305435195, now seen corresponding path program 5 times [2020-10-13 04:30:29,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:29,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225422783] [2020-10-13 04:30:29,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:29,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:29,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:31,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:34,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 04:30:34,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:34,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:30:34,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:34,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:30:34,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 04:30:34,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:30:34,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:34,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:34,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:34,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:34,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:34,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:34,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:34,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:34,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 04:30:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:34,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:34,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:34,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:34,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:30:34,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:34,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:34,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:34,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:34,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:34,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 04:30:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:34,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:34,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:34,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:34,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:30:34,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:34,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:34,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:34,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:34,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:34,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 04:30:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:34,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:34,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:34,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:34,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:34,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:30:34,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:34,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:34,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:34,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:34,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-13 04:30:35,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225422783] [2020-10-13 04:30:35,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:35,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:30:35,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338077787] [2020-10-13 04:30:35,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:30:35,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:35,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:30:35,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:30:35,011 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-13 04:30:35,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:35,105 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-10-13 04:30:35,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:30:35,105 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-13 04:30:35,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:35,107 INFO L225 Difference]: With dead ends: 57 [2020-10-13 04:30:35,108 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 04:30:35,108 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 04:30:35,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 04:30:35,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-13 04:30:35,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 04:30:35,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-13 04:30:35,117 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 58 [2020-10-13 04:30:35,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:35,118 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-13 04:30:35,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:30:35,118 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-13 04:30:35,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 04:30:35,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:35,122 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:35,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 04:30:35,122 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:35,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:35,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1355149629, now seen corresponding path program 6 times [2020-10-13 04:30:35,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:35,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187118312] [2020-10-13 04:30:35,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:35,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:35,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:35,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:35,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:38,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:40,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 04:30:40,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:40,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:30:40,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:30:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:30:40,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:40,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:40,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:40,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:40,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:40,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:40,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:40,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:40,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:40,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:40,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:40,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 04:30:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:40,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:40,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:40,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:40,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:30:40,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:40,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:40,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 04:30:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:40,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:40,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:40,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:40,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:30:40,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:40,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:40,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:40,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:40,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:40,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 04:30:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:40,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:40,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:40,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:40,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:30:40,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:40,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:40,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:40,240 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 04:30:40,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187118312] [2020-10-13 04:30:40,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:40,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:30:40,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503581603] [2020-10-13 04:30:40,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:30:40,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:40,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:30:40,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:30:40,243 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 6 states. [2020-10-13 04:30:40,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:40,327 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2020-10-13 04:30:40,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:30:40,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-13 04:30:40,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:40,329 INFO L225 Difference]: With dead ends: 70 [2020-10-13 04:30:40,329 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 04:30:40,329 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 04:30:40,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 04:30:40,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 04:30:40,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 04:30:40,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-13 04:30:40,343 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-13 04:30:40,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:40,343 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-13 04:30:40,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:30:40,344 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-13 04:30:40,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 04:30:40,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:40,347 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 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, 1, 1] [2020-10-13 04:30:40,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 04:30:40,348 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:40,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:40,348 INFO L82 PathProgramCache]: Analyzing trace with hash -2089835483, now seen corresponding path program 7 times [2020-10-13 04:30:40,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:40,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725548069] [2020-10-13 04:30:40,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:40,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:40,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:44,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:45,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 04:30:45,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:45,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:30:45,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:45,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:30:45,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:45,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:30:45,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:45,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:45,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:45,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:45,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:45,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:45,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:45,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:45,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:45,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:30:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:45,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:45,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:45,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:45,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:30:45,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:45,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:45,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:45,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:45,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:45,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 04:30:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:45,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:45,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:45,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:45,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:30:45,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:45,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:45,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:45,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:45,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:45,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 04:30:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:45,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:45,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:45,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:45,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:30:45,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:45,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:45,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:45,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:45,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:45,486 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 04:30:45,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725548069] [2020-10-13 04:30:45,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:45,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:30:45,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518987237] [2020-10-13 04:30:45,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:30:45,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:45,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:30:45,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:30:45,489 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-13 04:30:45,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:45,583 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2020-10-13 04:30:45,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:30:45,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-10-13 04:30:45,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:45,584 INFO L225 Difference]: With dead ends: 72 [2020-10-13 04:30:45,584 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 04:30:45,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:30:45,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 04:30:45,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 04:30:45,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 04:30:45,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-13 04:30:45,593 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 62 [2020-10-13 04:30:45,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:45,594 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-13 04:30:45,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:30:45,594 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-13 04:30:45,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 04:30:45,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:45,597 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 4, 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, 1, 1] [2020-10-13 04:30:45,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 04:30:45,597 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:45,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:45,598 INFO L82 PathProgramCache]: Analyzing trace with hash 546662663, now seen corresponding path program 8 times [2020-10-13 04:30:45,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:45,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026303349] [2020-10-13 04:30:45,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:45,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:45,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:50,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 04:30:50,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:50,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:30:50,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:50,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:30:50,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 04:30:50,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:30:50,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:50,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:50,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:50,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:50,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:50,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:50,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:50,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:50,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:50,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:50,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:50,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:30:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:50,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:50,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:50,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:50,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 04:30:50,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:50,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:30:50,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:30:50,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:30:50,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:50,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 04:30:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:50,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:50,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:50,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:50,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:30:50,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:50,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:50,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:50,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:50,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:50,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 04:30:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:50,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:50,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:30:50,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:50,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:30:50,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:50,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:50,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:50,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-13 04:30:50,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026303349] [2020-10-13 04:30:50,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:50,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:30:50,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250558078] [2020-10-13 04:30:50,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:30:50,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:50,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:30:50,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:30:50,729 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 7 states. [2020-10-13 04:30:50,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:50,882 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-10-13 04:30:50,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:30:50,883 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 04:30:50,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:50,884 INFO L225 Difference]: With dead ends: 73 [2020-10-13 04:30:50,884 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 04:30:50,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:30:50,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 04:30:50,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 04:30:50,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 04:30:50,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-13 04:30:50,901 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 64 [2020-10-13 04:30:50,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:50,901 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-13 04:30:50,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:30:50,901 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-13 04:30:50,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 04:30:50,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:50,902 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 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, 1, 1] [2020-10-13 04:30:50,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 04:30:50,902 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:50,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:50,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1862159493, now seen corresponding path program 9 times [2020-10-13 04:30:50,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:50,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267146747] [2020-10-13 04:30:50,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:50,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:50,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:55,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 04:30:55,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:30:55,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 04:30:55,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:55,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:30:55,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 04:30:55,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:30:55,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:55,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:55,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:55,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:55,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:55,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:55,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:55,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:55,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:55,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:55,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:55,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:30:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:55,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:55,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:30:55,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:55,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:30:55,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:55,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:55,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:30:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:55,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:55,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:56,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:30:56,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:56,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:30:56,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:56,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:56,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:56,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:56,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:56,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 04:30:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:56,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:56,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:30:56,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:56,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:30:56,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:56,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:56,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:30:56,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:56,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:56,046 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-13 04:30:56,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267146747] [2020-10-13 04:30:56,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:56,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:30:56,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108731404] [2020-10-13 04:30:56,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:30:56,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:56,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:30:56,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:30:56,049 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-13 04:30:56,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:56,125 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-10-13 04:30:56,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:30:56,125 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-13 04:30:56,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:56,126 INFO L225 Difference]: With dead ends: 67 [2020-10-13 04:30:56,126 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 04:30:56,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:30:56,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 04:30:56,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 04:30:56,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 04:30:56,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-13 04:30:56,140 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 70 [2020-10-13 04:30:56,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:56,141 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-13 04:30:56,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:30:56,141 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-13 04:30:56,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 04:30:56,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:56,142 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:56,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 04:30:56,142 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:56,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:56,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1920651901, now seen corresponding path program 10 times [2020-10-13 04:30:56,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:56,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134493740] [2020-10-13 04:30:56,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:56,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:56,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:01,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 04:31:01,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:01,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:31:01,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:01,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:31:01,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 04:31:01,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:31:01,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:01,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:01,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:01,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:01,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:01,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:01,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:01,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:01,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:01,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:01,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:01,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:31:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:01,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:01,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:01,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:01,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:31:01,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:01,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:01,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:01,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:01,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:01,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:31:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:01,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:01,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:01,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:01,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:31:01,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:01,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:31:01,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:31:01,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:31:01,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:01,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 04:31:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:01,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:01,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:01,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:01,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:31:01,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:01,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:01,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:31:01,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:01,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 44 proven. 60 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-13 04:31:01,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134493740] [2020-10-13 04:31:01,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:01,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:31:01,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372570818] [2020-10-13 04:31:01,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:31:01,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:01,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:31:01,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:01,274 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 8 states. [2020-10-13 04:31:01,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:01,439 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-10-13 04:31:01,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:31:01,440 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-13 04:31:01,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:01,441 INFO L225 Difference]: With dead ends: 81 [2020-10-13 04:31:01,441 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 04:31:01,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:31:01,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 04:31:01,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 04:31:01,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 04:31:01,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-13 04:31:01,447 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 72 [2020-10-13 04:31:01,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:01,447 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-13 04:31:01,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:31:01,448 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-13 04:31:01,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 04:31:01,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:01,448 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:01,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 04:31:01,449 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:01,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:01,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1621058305, now seen corresponding path program 11 times [2020-10-13 04:31:01,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:01,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188909638] [2020-10-13 04:31:01,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:01,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:01,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:06,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 04:31:06,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:06,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:31:06,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:06,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:31:06,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:31:06,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:31:06,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:06,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:06,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:06,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:06,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:06,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:06,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:06,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:06,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:06,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:06,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:06,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:31:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:06,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:06,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:06,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:06,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:31:06,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:06,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:06,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:06,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:06,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:06,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 04:31:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:06,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:06,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:06,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:06,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:31:06,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:06,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:06,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:06,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:06,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 04:31:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:06,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:06,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:06,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:06,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:31:06,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:06,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:06,564 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-13 04:31:06,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188909638] [2020-10-13 04:31:06,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:06,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:31:06,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157334295] [2020-10-13 04:31:06,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:31:06,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:06,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:31:06,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:06,566 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-13 04:31:06,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:06,671 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2020-10-13 04:31:06,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:31:06,672 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-13 04:31:06,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:06,673 INFO L225 Difference]: With dead ends: 86 [2020-10-13 04:31:06,673 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 04:31:06,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:06,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 04:31:06,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-13 04:31:06,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 04:31:06,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-13 04:31:06,679 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 78 [2020-10-13 04:31:06,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:06,680 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-13 04:31:06,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:31:06,680 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-13 04:31:06,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 04:31:06,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:06,681 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:06,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 04:31:06,681 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:06,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:06,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1471357923, now seen corresponding path program 12 times [2020-10-13 04:31:06,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:06,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520789704] [2020-10-13 04:31:06,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:06,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:06,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:11,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 04:31:11,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:11,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:31:11,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:11,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:31:11,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 04:31:11,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:31:11,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:11,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:11,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:11,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:11,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:11,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:11,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:11,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:11,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:11,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:11,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:11,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:31:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:11,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:11,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:11,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:11,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:31:11,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:11,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:11,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:11,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:11,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:11,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 04:31:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:11,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:11,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:11,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:11,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:31:11,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:11,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:11,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:11,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:11,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:11,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 04:31:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:11,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:11,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:11,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:11,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:11,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:31:11,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:11,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:11,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:11,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:11,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:31:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-13 04:31:11,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520789704] [2020-10-13 04:31:11,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:11,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:31:11,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893003305] [2020-10-13 04:31:11,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:31:11,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:11,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:31:11,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:11,841 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 8 states. [2020-10-13 04:31:11,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:11,971 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2020-10-13 04:31:11,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:31:11,972 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-10-13 04:31:11,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:11,973 INFO L225 Difference]: With dead ends: 75 [2020-10-13 04:31:11,973 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 04:31:11,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:11,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 04:31:11,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 04:31:11,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 04:31:11,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-13 04:31:11,980 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 80 [2020-10-13 04:31:11,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:11,980 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-13 04:31:11,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:31:11,980 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-13 04:31:11,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 04:31:11,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:11,981 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:11,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 04:31:11,981 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:11,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:11,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1187343007, now seen corresponding path program 13 times [2020-10-13 04:31:11,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:11,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886540649] [2020-10-13 04:31:11,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:11,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:12,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:12,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:12,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:16,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:16,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 04:31:16,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:16,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:31:16,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:16,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:31:16,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 04:31:16,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:31:16,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:17,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:17,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:17,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:17,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:17,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:31:17,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:17,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:17,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:17,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:17,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:17,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:31:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:17,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:17,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:17,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:17,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:31:17,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:17,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:31:17,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:31:17,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:31:17,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:17,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 04:31:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:17,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:17,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:17,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:17,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:31:17,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:17,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:17,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 04:31:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:17,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:17,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:17,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:17,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:31:17,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:17,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:17,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:17,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:17,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:31:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-13 04:31:17,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886540649] [2020-10-13 04:31:17,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:17,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:31:17,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874235976] [2020-10-13 04:31:17,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:31:17,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:17,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:31:17,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:17,154 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 9 states. [2020-10-13 04:31:17,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:17,391 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2020-10-13 04:31:17,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:31:17,392 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-13 04:31:17,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:17,393 INFO L225 Difference]: With dead ends: 91 [2020-10-13 04:31:17,393 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 04:31:17,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:31:17,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 04:31:17,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 04:31:17,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 04:31:17,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-13 04:31:17,412 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 82 [2020-10-13 04:31:17,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:17,412 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-13 04:31:17,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:31:17,413 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-13 04:31:17,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 04:31:17,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:17,416 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:17,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 04:31:17,417 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:17,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:17,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1986114721, now seen corresponding path program 14 times [2020-10-13 04:31:17,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:17,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139558803] [2020-10-13 04:31:17,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:17,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:17,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:22,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 04:31:22,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:22,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:31:22,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:22,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:31:22,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-13 04:31:22,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:31:22,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:22,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:22,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:22,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:22,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:22,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:22,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:22,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:31:22,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:31:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:22,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:22,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:22,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:22,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 04:31:22,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:22,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:31:22,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 04:31:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:22,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:22,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:22,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:22,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:31:22,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:22,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:22,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:22,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:22,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:31:22,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 04:31:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:22,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:22,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:22,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:22,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 04:31:22,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:22,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:22,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:31:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2020-10-13 04:31:22,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139558803] [2020-10-13 04:31:22,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:22,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:31:22,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849452766] [2020-10-13 04:31:22,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:31:22,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:22,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:31:22,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:22,667 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2020-10-13 04:31:22,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:22,805 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2020-10-13 04:31:22,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:31:22,805 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-13 04:31:22,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:22,807 INFO L225 Difference]: With dead ends: 81 [2020-10-13 04:31:22,807 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 04:31:22,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:22,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 04:31:22,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 04:31:22,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 04:31:22,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-13 04:31:22,820 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 88 [2020-10-13 04:31:22,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:22,820 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-13 04:31:22,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:31:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-13 04:31:22,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 04:31:22,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:22,823 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:22,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 04:31:22,823 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:22,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:22,823 INFO L82 PathProgramCache]: Analyzing trace with hash -413745699, now seen corresponding path program 15 times [2020-10-13 04:31:22,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:22,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195855240] [2020-10-13 04:31:22,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:22,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:22,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:23,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:27,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 04:31:27,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:27,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:31:27,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:27,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:31:27,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:31:27,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:31:27,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:27,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:27,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:27,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:27,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:27,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:27,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:27,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:27,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:31:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:27,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:27,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:27,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:27,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:31:27,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:27,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:27,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 04:31:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:27,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:27,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:27,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:27,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:31:27,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:27,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:27,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:27,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:27,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:27,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 04:31:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:27,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:27,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:27,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:27,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:27,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:31:27,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:27,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:27,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:27,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:27,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 04:31:27,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195855240] [2020-10-13 04:31:27,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:27,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:31:27,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645165116] [2020-10-13 04:31:27,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:31:27,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:27,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:31:27,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:27,988 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 9 states. [2020-10-13 04:31:28,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:28,103 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2020-10-13 04:31:28,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:31:28,104 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-13 04:31:28,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:28,105 INFO L225 Difference]: With dead ends: 100 [2020-10-13 04:31:28,106 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 04:31:28,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:28,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 04:31:28,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 04:31:28,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 04:31:28,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-13 04:31:28,112 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 90 [2020-10-13 04:31:28,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:28,113 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-13 04:31:28,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:31:28,113 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-13 04:31:28,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 04:31:28,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:28,115 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:28,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 04:31:28,115 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:28,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:28,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1367983169, now seen corresponding path program 16 times [2020-10-13 04:31:28,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:28,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679609364] [2020-10-13 04:31:28,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:28,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:28,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:28,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:28,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:33,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 04:31:33,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:33,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 04:31:33,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:33,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:31:33,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 04:31:33,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:31:33,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:33,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:33,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:33,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:33,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:33,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:33,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:33,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:33,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:31:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:33,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:33,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:33,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:33,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:31:33,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:33,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:33,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:33,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:33,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:33,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 04:31:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:33,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:33,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:33,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:33,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:31:33,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:33,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:31:33,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:31:33,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:31:33,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:33,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 04:31:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:33,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:33,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:33,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:33,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:31:33,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:33,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:33,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:33,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:33,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 88 proven. 124 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2020-10-13 04:31:33,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679609364] [2020-10-13 04:31:33,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:33,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:31:33,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940080114] [2020-10-13 04:31:33,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:31:33,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:33,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:31:33,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:31:33,365 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 10 states. [2020-10-13 04:31:33,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:33,569 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2020-10-13 04:31:33,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:31:33,569 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-13 04:31:33,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:33,570 INFO L225 Difference]: With dead ends: 101 [2020-10-13 04:31:33,570 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 04:31:33,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:31:33,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 04:31:33,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-13 04:31:33,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 04:31:33,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-13 04:31:33,580 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 92 [2020-10-13 04:31:33,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:33,580 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-13 04:31:33,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:31:33,580 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-13 04:31:33,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 04:31:33,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:33,582 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:33,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 04:31:33,582 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:33,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:33,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1313231421, now seen corresponding path program 17 times [2020-10-13 04:31:33,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:33,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885910318] [2020-10-13 04:31:33,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:33,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:33,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:38,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 04:31:38,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:38,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:31:38,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:31:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:31:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:31:38,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:38,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:38,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:38,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:38,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:38,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:38,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:38,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:38,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:38,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:38,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:38,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:31:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:38,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:38,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:38,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:38,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:31:38,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:31:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:38,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:38,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:31:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:38,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:38,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:38,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:38,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:31:38,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:38,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:38,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:31:38,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:38,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:38,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 04:31:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:38,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:38,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:38,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:38,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:31:38,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:38,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:38,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:31:38,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:38,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2020-10-13 04:31:38,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885910318] [2020-10-13 04:31:38,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:38,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:31:38,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976045799] [2020-10-13 04:31:38,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:31:38,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:38,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:31:38,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:31:38,782 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 10 states. [2020-10-13 04:31:38,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:38,887 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2020-10-13 04:31:38,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:31:38,887 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-10-13 04:31:38,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:38,888 INFO L225 Difference]: With dead ends: 106 [2020-10-13 04:31:38,888 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 04:31:38,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:31:38,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 04:31:38,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-13 04:31:38,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 04:31:38,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-13 04:31:38,894 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 98 [2020-10-13 04:31:38,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:38,895 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-13 04:31:38,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:31:38,895 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-13 04:31:38,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 04:31:38,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:38,896 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:38,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 04:31:38,896 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:38,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:38,897 INFO L82 PathProgramCache]: Analyzing trace with hash -721236449, now seen corresponding path program 18 times [2020-10-13 04:31:38,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:38,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003638601] [2020-10-13 04:31:38,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:38,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:38,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:43,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 04:31:43,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:43,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:31:43,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:31:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 04:31:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:31:43,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:43,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:43,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:43,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:43,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:43,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:43,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:43,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:43,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:43,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:43,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:43,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:31:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:43,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:43,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:44,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:44,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:44,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:31:44,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:44,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:44,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:44,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:44,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:44,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 04:31:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:44,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:44,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:44,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:44,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:31:44,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:44,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:44,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:44,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:44,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:44,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 04:31:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:44,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:44,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:44,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:44,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:31:44,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:44,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:44,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:31:44,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:44,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-13 04:31:44,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003638601] [2020-10-13 04:31:44,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:44,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:31:44,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266714301] [2020-10-13 04:31:44,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:31:44,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:44,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:31:44,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:31:44,072 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 10 states. [2020-10-13 04:31:44,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:44,176 INFO L93 Difference]: Finished difference Result 91 states and 96 transitions. [2020-10-13 04:31:44,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:31:44,179 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 100 [2020-10-13 04:31:44,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:44,180 INFO L225 Difference]: With dead ends: 91 [2020-10-13 04:31:44,180 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 04:31:44,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:31:44,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 04:31:44,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 04:31:44,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 04:31:44,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-13 04:31:44,185 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 100 [2020-10-13 04:31:44,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:44,185 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-13 04:31:44,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:31:44,186 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-13 04:31:44,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 04:31:44,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:44,187 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:44,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 04:31:44,187 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:44,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:44,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1836679011, now seen corresponding path program 19 times [2020-10-13 04:31:44,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:44,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074961529] [2020-10-13 04:31:44,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:44,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:49,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 04:31:49,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:49,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:31:49,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:49,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:31:49,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 04:31:49,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:31:49,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:49,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:49,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:49,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:49,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:49,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:49,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:49,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:49,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:31:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:49,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:49,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:49,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:49,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:31:49,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:49,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:31:49,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:31:49,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:31:49,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:49,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 04:31:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:49,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:49,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:49,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:49,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:31:49,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:49,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:49,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:31:49,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:49,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:49,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 04:31:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:49,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:49,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:31:49,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:49,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:31:49,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:49,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:49,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:31:49,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:49,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:49,358 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-13 04:31:49,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074961529] [2020-10-13 04:31:49,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:49,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:31:49,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366463262] [2020-10-13 04:31:49,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:31:49,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:49,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:31:49,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:31:49,360 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 11 states. [2020-10-13 04:31:49,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:49,593 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2020-10-13 04:31:49,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:31:49,593 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-10-13 04:31:49,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:49,594 INFO L225 Difference]: With dead ends: 111 [2020-10-13 04:31:49,594 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 04:31:49,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:31:49,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 04:31:49,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 04:31:49,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 04:31:49,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-13 04:31:49,600 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 102 [2020-10-13 04:31:49,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:49,600 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-13 04:31:49,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:31:49,600 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-13 04:31:49,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 04:31:49,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:49,601 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:49,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 04:31:49,601 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:49,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:49,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1001531493, now seen corresponding path program 20 times [2020-10-13 04:31:49,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:49,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492586895] [2020-10-13 04:31:49,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:49,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:49,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:54,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 04:31:54,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:54,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:31:54,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:54,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:31:54,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:31:54,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:31:54,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:54,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:54,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:54,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:54,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:54,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:54,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:54,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:54,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:54,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:54,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:54,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:31:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:54,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:54,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:31:54,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:54,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:31:54,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:54,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:54,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:31:54,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:54,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:54,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 04:31:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:54,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:54,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:31:54,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:54,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:31:54,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:54,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:54,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:31:54,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:54,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:54,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 04:31:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:54,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:54,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:31:54,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:54,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:31:54,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:54,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:54,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:31:54,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:54,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2020-10-13 04:31:54,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492586895] [2020-10-13 04:31:54,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:54,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:31:54,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284716602] [2020-10-13 04:31:54,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:31:54,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:54,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:31:54,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:31:54,779 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 11 states. [2020-10-13 04:31:54,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:54,897 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2020-10-13 04:31:54,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:31:54,898 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-13 04:31:54,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:54,899 INFO L225 Difference]: With dead ends: 116 [2020-10-13 04:31:54,899 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 04:31:54,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:31:54,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 04:31:54,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-13 04:31:54,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 04:31:54,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-13 04:31:54,905 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-13 04:31:54,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:54,905 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-13 04:31:54,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:31:54,905 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-13 04:31:54,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 04:31:54,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:54,907 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:54,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 04:31:54,907 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:54,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:54,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1674731773, now seen corresponding path program 21 times [2020-10-13 04:31:54,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:54,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688308313] [2020-10-13 04:31:54,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:54,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:54,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:59,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:59,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 04:31:59,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:59,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:31:59,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:59,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:31:59,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 04:31:59,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:31:59,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:59,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:00,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:00,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:00,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:00,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:00,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:00,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:00,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:00,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:00,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:00,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:32:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:00,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:00,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:00,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:00,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:32:00,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:00,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:00,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:00,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:00,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:00,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 04:32:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:00,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:00,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:00,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:00,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:32:00,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:00,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:00,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:00,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:00,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:00,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 04:32:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:00,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:00,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:00,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:00,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:32:00,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:00,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 04:32:00,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688308313] [2020-10-13 04:32:00,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:00,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:32:00,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108298983] [2020-10-13 04:32:00,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:32:00,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:00,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:32:00,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:32:00,087 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 11 states. [2020-10-13 04:32:00,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:00,188 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2020-10-13 04:32:00,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:32:00,189 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2020-10-13 04:32:00,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:00,190 INFO L225 Difference]: With dead ends: 99 [2020-10-13 04:32:00,191 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 04:32:00,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:32:00,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 04:32:00,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 04:32:00,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 04:32:00,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-13 04:32:00,195 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 110 [2020-10-13 04:32:00,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:00,195 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-13 04:32:00,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:32:00,195 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-13 04:32:00,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 04:32:00,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:00,196 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:00,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 04:32:00,197 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:00,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:00,197 INFO L82 PathProgramCache]: Analyzing trace with hash 505529339, now seen corresponding path program 22 times [2020-10-13 04:32:00,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:00,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584324560] [2020-10-13 04:32:00,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:00,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:05,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 04:32:05,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:05,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:32:05,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:05,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:32:05,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 04:32:05,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:32:05,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:05,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:05,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:05,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:05,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:05,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:05,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:05,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:05,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:05,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:05,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:05,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:32:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:05,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:05,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:05,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:05,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:32:05,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:05,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:05,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:05,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:05,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:05,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 04:32:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:05,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:05,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:05,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:05,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:32:05,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:05,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:05,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:05,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:05,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:05,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 04:32:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:05,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:05,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:05,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:05,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:32:05,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:05,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:05,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:05,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:05,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:05,410 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 04:32:05,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584324560] [2020-10-13 04:32:05,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:05,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:32:05,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728964997] [2020-10-13 04:32:05,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:32:05,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:05,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:32:05,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:05,413 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-13 04:32:05,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:05,550 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2020-10-13 04:32:05,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:32:05,551 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-10-13 04:32:05,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:05,552 INFO L225 Difference]: With dead ends: 101 [2020-10-13 04:32:05,552 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 04:32:05,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:05,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 04:32:05,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 04:32:05,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 04:32:05,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-13 04:32:05,557 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 112 [2020-10-13 04:32:05,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:05,558 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-13 04:32:05,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:32:05,558 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-13 04:32:05,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 04:32:05,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:05,559 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 9, 9, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:05,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 04:32:05,559 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:05,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:05,559 INFO L82 PathProgramCache]: Analyzing trace with hash -2111545479, now seen corresponding path program 23 times [2020-10-13 04:32:05,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:05,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071864599] [2020-10-13 04:32:05,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:05,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:05,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:10,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 04:32:10,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:10,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 04:32:10,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:10,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:32:10,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:32:10,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:32:10,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:10,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:10,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:10,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:10,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:10,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:10,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:10,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:10,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:10,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:10,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:10,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:32:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:10,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:10,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:10,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:10,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:32:10,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:10,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:10,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:10,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:10,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:10,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 04:32:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:10,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:10,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:10,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:10,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:32:10,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:10,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:10,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:10,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:10,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:10,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 04:32:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:10,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:10,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:10,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:10,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:32:10,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:10,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:10,759 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2020-10-13 04:32:10,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071864599] [2020-10-13 04:32:10,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:10,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:32:10,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847617325] [2020-10-13 04:32:10,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:32:10,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:10,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:32:10,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:10,760 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 12 states. [2020-10-13 04:32:10,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:10,855 INFO L93 Difference]: Finished difference Result 126 states and 134 transitions. [2020-10-13 04:32:10,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:32:10,856 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 114 [2020-10-13 04:32:10,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:10,857 INFO L225 Difference]: With dead ends: 126 [2020-10-13 04:32:10,857 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 04:32:10,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:10,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 04:32:10,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 04:32:10,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 04:32:10,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-13 04:32:10,862 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 114 [2020-10-13 04:32:10,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:10,863 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-13 04:32:10,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:32:10,863 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-13 04:32:10,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 04:32:10,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:10,864 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:10,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 04:32:10,864 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:10,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:10,865 INFO L82 PathProgramCache]: Analyzing trace with hash -461318309, now seen corresponding path program 24 times [2020-10-13 04:32:10,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:10,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950654322] [2020-10-13 04:32:10,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:10,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:10,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:15,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 04:32:15,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:15,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:32:15,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:15,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:32:15,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 04:32:15,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:32:15,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:15,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:15,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:15,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:15,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:15,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:15,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:15,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:15,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:15,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:15,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:15,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:32:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:15,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:15,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:15,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:15,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:15,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:32:15,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:32:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:32:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:32:15,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:15,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 04:32:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:16,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:16,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:16,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:16,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:32:16,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:16,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:16,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:16,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:16,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:16,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 04:32:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:16,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:16,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:16,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:16,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:32:16,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:16,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:16,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:16,069 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2020-10-13 04:32:16,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950654322] [2020-10-13 04:32:16,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:16,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:32:16,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953583075] [2020-10-13 04:32:16,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:32:16,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:16,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:32:16,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:16,071 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 12 states. [2020-10-13 04:32:16,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:16,333 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2020-10-13 04:32:16,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:32:16,334 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 116 [2020-10-13 04:32:16,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:16,335 INFO L225 Difference]: With dead ends: 127 [2020-10-13 04:32:16,335 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 04:32:16,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-13 04:32:16,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 04:32:16,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-13 04:32:16,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 04:32:16,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-13 04:32:16,344 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 116 [2020-10-13 04:32:16,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:16,345 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-13 04:32:16,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:32:16,345 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-13 04:32:16,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 04:32:16,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:16,347 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:16,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 04:32:16,348 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:16,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:16,348 INFO L82 PathProgramCache]: Analyzing trace with hash 862348761, now seen corresponding path program 25 times [2020-10-13 04:32:16,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:16,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596855061] [2020-10-13 04:32:16,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:16,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:21,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 04:32:21,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:21,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 04:32:21,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:21,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:32:21,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:32:21,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:32:21,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:21,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:21,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:21,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:21,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:21,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:21,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:21,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:21,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:21,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:21,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:21,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:32:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:21,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:21,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:21,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:21,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 04:32:21,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:21,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:21,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:32:21,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:21,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:21,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 04:32:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:21,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:21,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:21,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:21,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:32:21,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:21,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:21,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:32:21,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:21,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:21,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 04:32:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:21,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:21,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:21,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:21,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:32:21,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:21,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:21,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:32:21,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:21,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:21,566 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2020-10-13 04:32:21,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596855061] [2020-10-13 04:32:21,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:21,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:32:21,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057536643] [2020-10-13 04:32:21,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:32:21,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:21,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:32:21,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:21,567 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 13 states. [2020-10-13 04:32:21,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:21,697 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2020-10-13 04:32:21,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:32:21,698 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-13 04:32:21,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:21,699 INFO L225 Difference]: With dead ends: 132 [2020-10-13 04:32:21,699 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 04:32:21,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:21,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 04:32:21,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-13 04:32:21,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 04:32:21,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-13 04:32:21,706 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 122 [2020-10-13 04:32:21,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:21,706 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-13 04:32:21,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:32:21,706 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-13 04:32:21,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 04:32:21,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:21,707 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:21,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 04:32:21,708 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:21,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:21,708 INFO L82 PathProgramCache]: Analyzing trace with hash 767941563, now seen corresponding path program 26 times [2020-10-13 04:32:21,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:21,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259304101] [2020-10-13 04:32:21,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:21,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:21,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:26,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 04:32:26,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:26,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 04:32:26,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:26,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:32:26,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-13 04:32:26,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:32:26,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:26,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:26,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:26,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:26,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:26,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:26,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:26,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:26,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:32:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:26,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:26,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:26,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:26,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:32:26,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:26,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:26,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:26,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:26,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:26,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 04:32:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:26,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:26,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:26,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:26,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:32:26,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:32:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:32:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:32:26,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:26,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 04:32:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:26,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:26,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:26,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:26,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:26,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:32:26,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:26,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:26,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:32:26,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:26,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 184 proven. 265 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2020-10-13 04:32:26,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259304101] [2020-10-13 04:32:26,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:26,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:32:26,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103149089] [2020-10-13 04:32:26,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:32:26,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:26,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:32:26,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:26,931 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 13 states. [2020-10-13 04:32:27,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:27,216 INFO L93 Difference]: Finished difference Result 133 states and 143 transitions. [2020-10-13 04:32:27,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:32:27,216 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-10-13 04:32:27,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:27,218 INFO L225 Difference]: With dead ends: 133 [2020-10-13 04:32:27,218 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 04:32:27,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-13 04:32:27,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 04:32:27,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-13 04:32:27,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 04:32:27,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-13 04:32:27,224 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 124 [2020-10-13 04:32:27,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:27,224 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-13 04:32:27,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:32:27,224 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-13 04:32:27,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 04:32:27,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:27,226 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:27,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 04:32:27,226 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:27,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:27,226 INFO L82 PathProgramCache]: Analyzing trace with hash -70196679, now seen corresponding path program 27 times [2020-10-13 04:32:27,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:27,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359544032] [2020-10-13 04:32:27,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:27,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:27,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:27,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:27,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:32,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:32,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 04:32:32,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:32,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:32:32,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:32,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:32:32,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 04:32:32,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:32:32,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:32,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:32,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:32,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:32,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:32,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:32,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:32,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:32,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:32,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:32:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:32,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:32,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:32,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:32,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:32,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:32,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 04:32:32,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:32,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:32,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:32,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:32,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:32,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 04:32:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:32,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:32,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:32,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:32,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:32,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:32,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 04:32:32,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:32,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:32,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:32,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:32,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:32,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 04:32:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:32,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:32,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:32,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:32,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:32,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:32,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:32:32,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:32,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:32,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:32,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:32,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:32,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-13 04:32:32,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359544032] [2020-10-13 04:32:32,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:32,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:32:32,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966556506] [2020-10-13 04:32:32,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:32:32,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:32,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:32:32,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:32,462 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 13 states. [2020-10-13 04:32:32,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:32,600 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2020-10-13 04:32:32,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:32:32,600 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-10-13 04:32:32,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:32,601 INFO L225 Difference]: With dead ends: 115 [2020-10-13 04:32:32,601 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 04:32:32,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:32,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 04:32:32,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 04:32:32,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 04:32:32,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-13 04:32:32,607 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 130 [2020-10-13 04:32:32,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:32,607 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-13 04:32:32,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:32:32,607 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-13 04:32:32,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 04:32:32,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:32,609 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:32,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 04:32:32,609 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:32,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:32,609 INFO L82 PathProgramCache]: Analyzing trace with hash -203766217, now seen corresponding path program 28 times [2020-10-13 04:32:32,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:32,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752253659] [2020-10-13 04:32:32,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:32,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:32,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:32,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:32,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:37,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 04:32:37,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:37,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 04:32:37,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:37,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:32:37,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 04:32:37,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:32:37,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:37,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:37,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:37,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:37,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:37,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:37,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:37,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:37,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:37,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:37,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:32:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:37,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:37,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:37,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:37,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:32:37,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:37,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:32:37,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:32:37,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:32:37,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:37,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 04:32:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:37,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:37,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:37,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:37,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:32:37,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:37,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:37,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:37,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:37,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:37,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 04:32:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:37,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:37,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:37,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:32:37,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:37,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 04:32:37,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:37,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:37,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:32:37,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:37,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2020-10-13 04:32:37,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752253659] [2020-10-13 04:32:37,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:37,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:32:37,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444253078] [2020-10-13 04:32:37,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:32:37,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:37,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:32:37,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:32:37,866 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 14 states. [2020-10-13 04:32:38,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:38,172 INFO L93 Difference]: Finished difference Result 141 states and 151 transitions. [2020-10-13 04:32:38,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:32:38,173 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-13 04:32:38,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:38,174 INFO L225 Difference]: With dead ends: 141 [2020-10-13 04:32:38,174 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 04:32:38,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-13 04:32:38,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 04:32:38,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-13 04:32:38,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 04:32:38,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-13 04:32:38,185 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 132 [2020-10-13 04:32:38,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:38,185 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-13 04:32:38,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:32:38,186 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-13 04:32:38,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 04:32:38,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:38,187 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:38,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 04:32:38,187 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:38,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:38,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1624841909, now seen corresponding path program 29 times [2020-10-13 04:32:38,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:38,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3763451] [2020-10-13 04:32:38,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:38,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:38,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:38,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:38,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:43,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:43,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 04:32:43,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:43,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 04:32:43,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:32:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:32:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:32:43,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:43,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:43,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:43,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:43,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:43,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:43,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:43,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:43,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:43,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:43,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:43,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:43,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:32:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:43,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:43,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:43,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:43,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:43,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:43,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:32:43,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:43,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:43,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:32:43,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:43,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:43,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 04:32:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:43,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:43,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:43,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:43,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:43,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:43,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 04:32:43,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:43,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:43,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:32:43,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:43,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:43,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 04:32:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:43,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:43,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:43,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:43,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:43,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:43,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 04:32:43,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:43,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:43,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:32:43,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:43,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:43,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2020-10-13 04:32:43,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3763451] [2020-10-13 04:32:43,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:43,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:32:43,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250110817] [2020-10-13 04:32:43,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:32:43,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:43,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:32:43,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:32:43,457 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 14 states. [2020-10-13 04:32:43,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:43,611 INFO L93 Difference]: Finished difference Result 146 states and 154 transitions. [2020-10-13 04:32:43,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:32:43,612 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 138 [2020-10-13 04:32:43,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:43,613 INFO L225 Difference]: With dead ends: 146 [2020-10-13 04:32:43,613 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 04:32:43,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:32:43,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 04:32:43,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-13 04:32:43,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 04:32:43,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-13 04:32:43,622 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 138 [2020-10-13 04:32:43,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:43,623 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-13 04:32:43,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:32:43,623 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-13 04:32:43,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 04:32:43,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:43,625 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:43,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 04:32:43,625 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:43,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:43,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1784377193, now seen corresponding path program 30 times [2020-10-13 04:32:43,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:43,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713269158] [2020-10-13 04:32:43,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:43,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:43,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:43,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:43,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:48,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:48,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 04:32:48,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:48,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:32:48,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:32:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 04:32:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:32:48,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:48,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:48,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:48,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:48,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:48,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:48,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:48,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:48,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:48,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:48,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:32:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:48,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:48,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:48,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:48,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:48,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:48,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:32:48,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:48,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:48,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:48,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:48,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:48,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 04:32:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:48,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:48,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:48,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:48,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:48,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:48,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 04:32:48,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:48,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:48,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:48,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:48,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:48,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 04:32:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:48,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:48,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:48,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:48,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:48,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:48,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 04:32:48,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:48,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:48,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:32:48,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:48,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:48,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-13 04:32:48,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713269158] [2020-10-13 04:32:48,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:48,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:32:48,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171109006] [2020-10-13 04:32:48,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:32:48,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:48,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:32:48,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:32:48,894 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 14 states. [2020-10-13 04:32:49,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:49,037 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2020-10-13 04:32:49,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:32:49,038 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 140 [2020-10-13 04:32:49,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:49,039 INFO L225 Difference]: With dead ends: 123 [2020-10-13 04:32:49,040 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 04:32:49,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:32:49,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 04:32:49,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-13 04:32:49,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 04:32:49,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-13 04:32:49,046 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 140 [2020-10-13 04:32:49,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:49,047 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-13 04:32:49,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:32:49,047 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-13 04:32:49,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 04:32:49,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:49,048 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:49,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 04:32:49,048 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:49,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:49,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1450001685, now seen corresponding path program 31 times [2020-10-13 04:32:49,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:49,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051012074] [2020-10-13 04:32:49,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:49,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:49,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:49,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:49,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:54,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:54,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 04:32:54,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:54,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 04:32:54,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:32:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 04:32:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:32:54,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:54,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:54,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:54,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:54,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:54,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:54,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:54,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:54,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:54,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:54,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:54,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:54,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:32:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:54,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:54,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:54,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:54,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:54,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:54,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:32:54,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:54,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:54,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 04:32:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:54,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:54,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:54,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:54,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:54,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:54,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:32:54,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:54,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:54,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 04:32:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:54,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:54,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:54,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:54,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:54,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:54,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:32:54,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:54,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:54,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:32:54,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:54,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-13 04:32:54,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051012074] [2020-10-13 04:32:54,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:54,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:32:54,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112665140] [2020-10-13 04:32:54,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:32:54,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:54,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:32:54,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:32:54,336 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 15 states. [2020-10-13 04:32:54,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:54,491 INFO L93 Difference]: Finished difference Result 125 states and 130 transitions. [2020-10-13 04:32:54,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:32:54,492 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 142 [2020-10-13 04:32:54,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:54,493 INFO L225 Difference]: With dead ends: 125 [2020-10-13 04:32:54,493 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 04:32:54,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:32:54,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 04:32:54,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-13 04:32:54,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 04:32:54,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-13 04:32:54,500 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 142 [2020-10-13 04:32:54,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:54,501 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-13 04:32:54,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:32:54,501 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-13 04:32:54,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-13 04:32:54,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:54,502 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 12, 12, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:54,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 04:32:54,502 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:54,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:54,503 INFO L82 PathProgramCache]: Analyzing trace with hash 131781139, now seen corresponding path program 32 times [2020-10-13 04:32:54,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:54,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399720948] [2020-10-13 04:32:54,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:54,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:54,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:54,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:54,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:59,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:59,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 04:32:59,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:59,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 04:32:59,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:59,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:32:59,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 04:32:59,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:32:59,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:59,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:59,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:59,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:59,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:59,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:59,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:32:59,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:59,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:59,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:59,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:59,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:59,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:32:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:59,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:59,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:59,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:59,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:59,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:59,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 04:32:59,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:59,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:59,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:59,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:59,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:59,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 04:32:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:59,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:59,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:59,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:59,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:59,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:32:59,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:32:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:32:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:32:59,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:59,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 04:32:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:59,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:59,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:59,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:59,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:32:59,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:59,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 04:32:59,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:59,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:59,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:32:59,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:59,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:59,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1435 backedges. 268 proven. 389 refuted. 0 times theorem prover too weak. 778 trivial. 0 not checked. [2020-10-13 04:32:59,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399720948] [2020-10-13 04:32:59,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:59,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:32:59,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191224783] [2020-10-13 04:32:59,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:32:59,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:59,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:32:59,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:32:59,814 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 15 states. [2020-10-13 04:33:00,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:00,143 INFO L93 Difference]: Finished difference Result 155 states and 165 transitions. [2020-10-13 04:33:00,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:33:00,143 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 144 [2020-10-13 04:33:00,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:00,144 INFO L225 Difference]: With dead ends: 155 [2020-10-13 04:33:00,144 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 04:33:00,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-13 04:33:00,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 04:33:00,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-13 04:33:00,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 04:33:00,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-13 04:33:00,154 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 144 [2020-10-13 04:33:00,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:00,154 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-13 04:33:00,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:33:00,154 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-13 04:33:00,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 04:33:00,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:00,156 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 12, 12, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:00,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 04:33:00,156 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:00,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:00,156 INFO L82 PathProgramCache]: Analyzing trace with hash 2073990033, now seen corresponding path program 33 times [2020-10-13 04:33:00,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:00,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978065339] [2020-10-13 04:33:00,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:00,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:00,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:00,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:00,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:05,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:05,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 04:33:05,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:05,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 04:33:05,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:05,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:33:05,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:33:05,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:33:05,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:05,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:05,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:05,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:05,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:05,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:05,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:05,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:05,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:05,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:05,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:05,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:05,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:33:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:05,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:05,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:05,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:05,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:05,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:05,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 04:33:05,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:05,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:05,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:05,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:05,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:05,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 04:33:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:05,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:05,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:05,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:05,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:05,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:05,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:33:05,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:05,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:05,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:05,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:05,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:05,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 04:33:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:05,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:05,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:05,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:05,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:05,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:05,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 04:33:05,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:05,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1648 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2020-10-13 04:33:05,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978065339] [2020-10-13 04:33:05,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:05,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:33:05,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340330829] [2020-10-13 04:33:05,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:33:05,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:05,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:33:05,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:33:05,478 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 15 states. [2020-10-13 04:33:05,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:05,585 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2020-10-13 04:33:05,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:33:05,586 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 150 [2020-10-13 04:33:05,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:05,587 INFO L225 Difference]: With dead ends: 160 [2020-10-13 04:33:05,587 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 04:33:05,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:33:05,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 04:33:05,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-13 04:33:05,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 04:33:05,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-13 04:33:05,593 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 150 [2020-10-13 04:33:05,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:05,593 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-13 04:33:05,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:33:05,594 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-13 04:33:05,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 04:33:05,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:05,595 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 12, 12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:05,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 04:33:05,595 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:05,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:05,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1031029363, now seen corresponding path program 34 times [2020-10-13 04:33:05,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:05,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031277043] [2020-10-13 04:33:05,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:05,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:05,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:05,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:05,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:10,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 04:33:10,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:10,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 04:33:10,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:33:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 04:33:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:33:10,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:10,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:10,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:10,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:10,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:10,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:10,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:10,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:10,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:10,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:10,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:10,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:33:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:10,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:10,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:10,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:10,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 04:33:10,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:10,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:10,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:10,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:10,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:10,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 04:33:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:10,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:10,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:10,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:10,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:33:10,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:10,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:10,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:10,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:10,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:10,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 04:33:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:10,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:10,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:10,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:10,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:10,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 04:33:10,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:10,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:10,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:10,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:10,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2020-10-13 04:33:10,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031277043] [2020-10-13 04:33:10,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:10,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:33:10,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608802797] [2020-10-13 04:33:10,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:33:10,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:10,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:33:10,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:10,903 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 16 states. [2020-10-13 04:33:11,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:11,027 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2020-10-13 04:33:11,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:33:11,027 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 152 [2020-10-13 04:33:11,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:11,028 INFO L225 Difference]: With dead ends: 133 [2020-10-13 04:33:11,028 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 04:33:11,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:11,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 04:33:11,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-13 04:33:11,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 04:33:11,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-13 04:33:11,038 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 152 [2020-10-13 04:33:11,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:11,038 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-13 04:33:11,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:33:11,039 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-13 04:33:11,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 04:33:11,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:11,041 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 13, 13, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:11,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 04:33:11,041 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:11,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:11,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1066196977, now seen corresponding path program 35 times [2020-10-13 04:33:11,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:11,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961598675] [2020-10-13 04:33:11,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:11,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:11,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:11,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:11,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:16,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:16,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 04:33:16,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:16,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 04:33:16,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:16,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:33:16,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 04:33:16,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:33:16,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:16,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:16,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:16,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:16,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:16,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:16,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:16,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:16,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:16,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:16,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:16,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:16,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:33:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:16,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:16,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:16,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:16,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:16,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:33:16,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:16,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:33:16,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:33:16,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:33:16,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:16,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 04:33:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:16,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:16,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:16,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:16,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:16,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:16,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:33:16,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:16,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:16,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:16,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:16,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:16,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 04:33:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:16,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:16,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:16,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:16,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:16,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:16,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:33:16,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:16,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:16,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:16,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:16,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:16,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1696 backedges. 0 proven. 776 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [2020-10-13 04:33:16,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961598675] [2020-10-13 04:33:16,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:16,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:33:16,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586517976] [2020-10-13 04:33:16,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:33:16,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:16,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:33:16,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:16,386 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 16 states. [2020-10-13 04:33:16,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:16,715 INFO L93 Difference]: Finished difference Result 165 states and 175 transitions. [2020-10-13 04:33:16,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:33:16,716 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 154 [2020-10-13 04:33:16,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:16,717 INFO L225 Difference]: With dead ends: 165 [2020-10-13 04:33:16,717 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 04:33:16,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-13 04:33:16,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 04:33:16,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-13 04:33:16,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 04:33:16,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-13 04:33:16,724 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 154 [2020-10-13 04:33:16,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:16,725 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-13 04:33:16,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:33:16,725 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-13 04:33:16,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 04:33:16,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:16,726 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:16,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 04:33:16,726 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:16,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:16,727 INFO L82 PathProgramCache]: Analyzing trace with hash -306961937, now seen corresponding path program 36 times [2020-10-13 04:33:16,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:16,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664272574] [2020-10-13 04:33:16,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:16,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:16,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:16,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:17,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:21,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 04:33:21,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:21,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 04:33:21,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:21,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:33:21,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:33:21,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:33:21,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:21,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:21,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:21,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:21,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:21,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:21,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:21,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:21,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:33:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:21,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:21,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:21,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:21,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 04:33:21,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:21,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:21,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:21,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:21,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:21,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 04:33:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:21,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:21,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:21,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:21,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 04:33:21,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:21,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:21,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:21,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:21,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:21,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 04:33:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:21,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:21,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:22,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:22,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:22,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:22,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:33:22,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:22,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:22,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1927 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-13 04:33:22,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664272574] [2020-10-13 04:33:22,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:22,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:33:22,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914459274] [2020-10-13 04:33:22,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:33:22,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:22,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:33:22,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:22,024 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 16 states. [2020-10-13 04:33:22,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:22,172 INFO L93 Difference]: Finished difference Result 170 states and 178 transitions. [2020-10-13 04:33:22,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:33:22,172 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 160 [2020-10-13 04:33:22,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:22,173 INFO L225 Difference]: With dead ends: 170 [2020-10-13 04:33:22,173 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 04:33:22,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:22,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 04:33:22,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-13 04:33:22,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 04:33:22,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-13 04:33:22,178 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 160 [2020-10-13 04:33:22,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:22,178 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-13 04:33:22,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:33:22,178 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-13 04:33:22,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 04:33:22,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:22,179 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:22,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 04:33:22,180 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:22,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:22,180 INFO L82 PathProgramCache]: Analyzing trace with hash 212737617, now seen corresponding path program 37 times [2020-10-13 04:33:22,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:22,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335735173] [2020-10-13 04:33:22,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:22,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:22,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:22,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:22,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:27,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:27,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 04:33:27,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:27,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:33:27,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:27,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:33:27,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 04:33:27,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:33:27,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:27,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:27,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:27,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:27,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:27,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:27,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:27,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:27,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:27,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:27,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:27,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:27,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:33:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:27,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:27,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:27,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:27,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:27,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 04:33:27,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:27,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:33:27,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:33:27,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:33:27,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:27,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 04:33:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:27,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:27,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:27,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:27,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:27,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:27,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 04:33:27,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:27,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:27,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:27,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:27,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:27,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 04:33:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:27,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:27,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:27,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:27,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:27,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:27,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 04:33:27,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:27,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:27,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:27,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:27,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:27,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 0 proven. 905 refuted. 0 times theorem prover too weak. 1047 trivial. 0 not checked. [2020-10-13 04:33:27,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335735173] [2020-10-13 04:33:27,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:27,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:33:27,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379776771] [2020-10-13 04:33:27,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:33:27,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:27,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:33:27,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:27,507 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 17 states. [2020-10-13 04:33:27,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:27,907 INFO L93 Difference]: Finished difference Result 171 states and 181 transitions. [2020-10-13 04:33:27,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:33:27,908 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 162 [2020-10-13 04:33:27,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:27,909 INFO L225 Difference]: With dead ends: 171 [2020-10-13 04:33:27,910 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 04:33:27,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-13 04:33:27,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 04:33:27,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-13 04:33:27,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 04:33:27,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-13 04:33:27,916 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 162 [2020-10-13 04:33:27,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:27,916 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-13 04:33:27,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:33:27,916 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-13 04:33:27,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 04:33:27,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:27,917 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:27,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 04:33:27,918 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:27,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:27,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1704634289, now seen corresponding path program 38 times [2020-10-13 04:33:27,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:27,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994782278] [2020-10-13 04:33:27,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:27,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:27,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:27,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:28,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:32,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:32,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 04:33:32,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:32,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 04:33:32,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:32,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:33:32,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:33:32,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:33:32,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:33,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:33,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:33,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:33,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:33,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:33,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:33,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:33,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:33,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:33,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:33,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:33,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:33:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:33,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:33,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:33,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:33,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:33,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:33,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:33:33,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:33:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:33,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:33,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 04:33:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:33,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:33,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:33,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:33,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:33,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:33,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 04:33:33,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:33,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:33,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:33:33,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:33,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:33,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 04:33:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:33,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:33,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:33,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:33,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:33,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:33,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 04:33:33,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:33,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:33,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:33:33,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:33,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2201 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2032 trivial. 0 not checked. [2020-10-13 04:33:33,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994782278] [2020-10-13 04:33:33,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:33,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:33:33,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526476835] [2020-10-13 04:33:33,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:33:33,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:33,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:33:33,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:33,271 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 17 states. [2020-10-13 04:33:33,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:33,437 INFO L93 Difference]: Finished difference Result 176 states and 184 transitions. [2020-10-13 04:33:33,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:33:33,438 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 168 [2020-10-13 04:33:33,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:33,439 INFO L225 Difference]: With dead ends: 176 [2020-10-13 04:33:33,439 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 04:33:33,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:33,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 04:33:33,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-13 04:33:33,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 04:33:33,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-13 04:33:33,444 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 168 [2020-10-13 04:33:33,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:33,444 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-13 04:33:33,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:33:33,444 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-13 04:33:33,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 04:33:33,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:33,445 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:33,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 04:33:33,446 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:33,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:33,446 INFO L82 PathProgramCache]: Analyzing trace with hash -808070479, now seen corresponding path program 39 times [2020-10-13 04:33:33,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:33,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012282700] [2020-10-13 04:33:33,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:33,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:33,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:33,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:33,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:38,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:38,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 04:33:38,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:38,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 04:33:38,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:38,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:33:38,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-13 04:33:38,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:33:38,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:38,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:38,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:38,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:38,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:38,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:38,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:38,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:38,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:38,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:33:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:38,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:38,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:38,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:38,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:38,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:38,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 04:33:38,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:38,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:38,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:38,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:38,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:38,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 04:33:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:38,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:38,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:38,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:38,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:38,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:38,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 04:33:38,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:38,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:38,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:38,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:38,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:33:38,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 04:33:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:38,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:38,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:38,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:38,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:38,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:38,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 04:33:38,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:38,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:33:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:38,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:38,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2228 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2020-10-13 04:33:38,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012282700] [2020-10-13 04:33:38,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:38,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:33:38,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882304767] [2020-10-13 04:33:38,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:33:38,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:38,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:33:38,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:38,932 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 17 states. [2020-10-13 04:33:39,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:39,082 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2020-10-13 04:33:39,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:33:39,083 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 170 [2020-10-13 04:33:39,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:39,084 INFO L225 Difference]: With dead ends: 147 [2020-10-13 04:33:39,084 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 04:33:39,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:39,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 04:33:39,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 04:33:39,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 04:33:39,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-13 04:33:39,090 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 170 [2020-10-13 04:33:39,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:39,091 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-13 04:33:39,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:33:39,091 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-13 04:33:39,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 04:33:39,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:39,092 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:39,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 04:33:39,093 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:39,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:39,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1086244689, now seen corresponding path program 40 times [2020-10-13 04:33:39,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:39,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25222349] [2020-10-13 04:33:39,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:39,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:39,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:39,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:39,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:44,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:44,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 04:33:44,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:44,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:33:44,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:44,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:33:44,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 04:33:44,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:33:44,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:44,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:44,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:44,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:44,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:44,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:44,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:44,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:44,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:44,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:44,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:44,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:44,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:33:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:44,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:44,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:44,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:44,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:44,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:44,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 04:33:44,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:44,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:44,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:44,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:44,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:44,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 04:33:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:44,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:44,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:44,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:44,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:44,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 04:33:44,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:33:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:33:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:33:44,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:44,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 04:33:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:44,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:44,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:44,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:44,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:33:44,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:44,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 04:33:44,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:44,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:44,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:33:44,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:44,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:44,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 424 proven. 620 refuted. 0 times theorem prover too weak. 1211 trivial. 0 not checked. [2020-10-13 04:33:44,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25222349] [2020-10-13 04:33:44,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:44,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:33:44,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355096411] [2020-10-13 04:33:44,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:33:44,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:44,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:33:44,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:33:44,461 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 18 states. [2020-10-13 04:33:44,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:44,879 INFO L93 Difference]: Finished difference Result 181 states and 191 transitions. [2020-10-13 04:33:44,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:33:44,879 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 172 [2020-10-13 04:33:44,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:44,881 INFO L225 Difference]: With dead ends: 181 [2020-10-13 04:33:44,881 INFO L226 Difference]: Without dead ends: 110 [2020-10-13 04:33:44,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 04:33:44,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-13 04:33:44,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-13 04:33:44,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 04:33:44,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-13 04:33:44,887 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 172 [2020-10-13 04:33:44,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:44,888 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-13 04:33:44,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:33:44,888 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-13 04:33:44,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 04:33:44,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:44,889 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:44,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 04:33:44,889 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:44,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:44,890 INFO L82 PathProgramCache]: Analyzing trace with hash 337367853, now seen corresponding path program 41 times [2020-10-13 04:33:44,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:44,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645117078] [2020-10-13 04:33:44,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:44,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:44,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:44,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:44,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:49,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:49,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 04:33:49,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:49,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 04:33:49,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:49,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:33:49,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:33:49,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:33:49,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:50,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:50,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:50,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:50,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:50,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:50,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:50,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:50,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:50,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:50,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:50,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:50,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:33:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:50,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:50,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:50,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:50,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:33:50,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:50,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 04:33:50,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:33:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:50,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:50,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 04:33:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:50,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:50,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:50,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:50,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:33:50,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:50,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 04:33:50,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:50,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:50,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:33:50,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:50,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:50,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 04:33:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:50,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:50,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:50,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:50,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:33:50,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:50,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 04:33:50,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:50,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:50,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:33:50,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:50,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:50,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2522 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2326 trivial. 0 not checked. [2020-10-13 04:33:50,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645117078] [2020-10-13 04:33:50,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:50,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:33:50,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918282758] [2020-10-13 04:33:50,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:33:50,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:50,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:33:50,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:33:50,285 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 18 states. [2020-10-13 04:33:50,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:50,455 INFO L93 Difference]: Finished difference Result 186 states and 194 transitions. [2020-10-13 04:33:50,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:33:50,456 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 178 [2020-10-13 04:33:50,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:50,457 INFO L225 Difference]: With dead ends: 186 [2020-10-13 04:33:50,457 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 04:33:50,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:33:50,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 04:33:50,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-13 04:33:50,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-13 04:33:50,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2020-10-13 04:33:50,466 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 178 [2020-10-13 04:33:50,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:50,466 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2020-10-13 04:33:50,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:33:50,466 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2020-10-13 04:33:50,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 04:33:50,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:50,467 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:50,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 04:33:50,467 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:50,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:50,468 INFO L82 PathProgramCache]: Analyzing trace with hash 977812239, now seen corresponding path program 42 times [2020-10-13 04:33:50,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:50,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996532062] [2020-10-13 04:33:50,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:50,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:50,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:50,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:50,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:55,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:55,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 04:33:55,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:55,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 04:33:55,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:55,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:33:55,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-13 04:33:55,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:33:55,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:55,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:55,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:55,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:55,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:55,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:55,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:33:55,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:55,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:55,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:33:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:55,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:55,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:55,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:55,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:33:55,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:55,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 04:33:55,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:55,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:55,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:55,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:55,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:55,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 04:33:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:55,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:55,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:55,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:55,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:33:55,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:55,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 04:33:55,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:55,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:55,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:55,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:55,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:55,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-13 04:33:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:55,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:55,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:55,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:55,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:33:55,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:55,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 04:33:55,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:55,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:55,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:33:55,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:55,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:55,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-13 04:33:55,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996532062] [2020-10-13 04:33:55,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:55,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:33:55,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030440090] [2020-10-13 04:33:55,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:33:55,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:55,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:33:55,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:33:55,872 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand 18 states. [2020-10-13 04:33:56,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:56,019 INFO L93 Difference]: Finished difference Result 155 states and 160 transitions. [2020-10-13 04:33:56,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:33:56,019 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 180 [2020-10-13 04:33:56,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:56,021 INFO L225 Difference]: With dead ends: 155 [2020-10-13 04:33:56,021 INFO L226 Difference]: Without dead ends: 114 [2020-10-13 04:33:56,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:33:56,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-13 04:33:56,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-13 04:33:56,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 04:33:56,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2020-10-13 04:33:56,026 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 180 [2020-10-13 04:33:56,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:56,027 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2020-10-13 04:33:56,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:33:56,027 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2020-10-13 04:33:56,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-13 04:33:56,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:56,029 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:56,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 04:33:56,029 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:56,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:56,029 INFO L82 PathProgramCache]: Analyzing trace with hash 2109469069, now seen corresponding path program 43 times [2020-10-13 04:33:56,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:56,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425336410] [2020-10-13 04:33:56,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:56,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:56,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:56,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:56,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:01,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:01,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 04:34:01,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:34:01,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 04:34:01,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:01,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 04:34:01,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 04:34:01,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 04:34:01,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:01,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:01,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:01,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:01,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:01,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:01,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:01,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:01,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:01,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:34:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:01,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:01,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:01,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:01,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:34:01,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:01,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 04:34:01,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:01,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:01,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 04:34:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:01,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:01,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:01,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:34:01,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:01,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 04:34:01,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:01,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 04:34:01,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:34:01,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 04:34:01,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:01,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 04:34:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:01,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:01,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:01,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 04:34:01,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:01,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 04:34:01,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:34:01,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:01,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:01,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 484 proven. 709 refuted. 0 times theorem prover too weak. 1387 trivial. 0 not checked. [2020-10-13 04:34:01,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425336410] [2020-10-13 04:34:01,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:01,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 04:34:01,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655025147] [2020-10-13 04:34:01,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 04:34:01,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:01,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 04:34:01,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:34:01,483 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand 19 states. [2020-10-13 04:34:01,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:01,950 INFO L93 Difference]: Finished difference Result 191 states and 201 transitions. [2020-10-13 04:34:01,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 04:34:01,951 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 182 [2020-10-13 04:34:01,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:01,952 INFO L225 Difference]: With dead ends: 191 [2020-10-13 04:34:01,952 INFO L226 Difference]: Without dead ends: 116 [2020-10-13 04:34:01,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 04:34:01,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-13 04:34:01,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-13 04:34:01,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 04:34:01,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2020-10-13 04:34:01,957 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 182 [2020-10-13 04:34:01,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:01,958 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2020-10-13 04:34:01,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 04:34:01,958 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2020-10-13 04:34:01,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-13 04:34:01,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:01,959 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 15, 15, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:01,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 04:34:01,960 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:01,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:01,960 INFO L82 PathProgramCache]: Analyzing trace with hash -679162741, now seen corresponding path program 44 times [2020-10-13 04:34:01,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:01,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270839666] [2020-10-13 04:34:01,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:01,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:02,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:02,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:02,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:06,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:06,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-13 04:34:06,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:34:06,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 04:34:06,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 04:34:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-13 04:34:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 04:34:06,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:07,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:07,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:07,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:07,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:07,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:07,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:07,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:07,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:07,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:07,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:07,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:07,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 04:34:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:07,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:07,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:07,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:07,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 04:34:07,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:07,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 04:34:07,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:07,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:07,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:07,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:07,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:07,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 04:34:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:07,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:07,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:07,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:07,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 04:34:07,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:07,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 04:34:07,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:07,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:07,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-13 04:34:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:07,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:07,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:07,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:07,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 04:34:07,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:07,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 04:34:07,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:07,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:07,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 04:34:07,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:07,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:07,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2865 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 2640 trivial. 0 not checked. [2020-10-13 04:34:07,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270839666] [2020-10-13 04:34:07,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:07,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 04:34:07,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222867159] [2020-10-13 04:34:07,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 04:34:07,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:07,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 04:34:07,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:34:07,405 INFO L87 Difference]: Start difference. First operand 115 states and 119 transitions. Second operand 19 states. [2020-10-13 04:34:07,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:07,510 INFO L93 Difference]: Finished difference Result 161 states and 166 transitions. [2020-10-13 04:34:07,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 04:34:07,511 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 188 [2020-10-13 04:34:07,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:07,513 INFO L225 Difference]: With dead ends: 161 [2020-10-13 04:34:07,513 INFO L226 Difference]: Without dead ends: 118 [2020-10-13 04:34:07,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:34:07,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-13 04:34:07,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-10-13 04:34:07,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-13 04:34:07,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2020-10-13 04:34:07,519 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 188 [2020-10-13 04:34:07,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:07,520 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2020-10-13 04:34:07,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 04:34:07,520 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2020-10-13 04:34:07,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-13 04:34:07,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:07,521 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 16, 16, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:07,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 04:34:07,521 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:07,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:07,522 INFO L82 PathProgramCache]: Analyzing trace with hash 681509897, now seen corresponding path program 45 times [2020-10-13 04:34:07,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:07,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592657250] [2020-10-13 04:34:07,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:07,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:07,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:07,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:08,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking...