/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/eca-rers2012/Problem14_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:53:11,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:53:11,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:53:11,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:53:11,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:53:11,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:53:11,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:53:11,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:53:11,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:53:11,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:53:11,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:53:11,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:53:11,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:53:11,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:53:11,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:53:11,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:53:11,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:53:11,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:53:11,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:53:11,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:53:11,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:53:11,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:53:11,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:53:11,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:53:11,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:53:11,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:53:11,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:53:11,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:53:11,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:53:11,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:53:11,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:53:11,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:53:11,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:53:11,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:53:11,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:53:11,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:53:11,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:53:11,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:53:11,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:53:11,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:53:11,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:53:11,646 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 08:53:11,687 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:53:11,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:53:11,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:53:11,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:53:11,689 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:53:11,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:53:11,690 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:53:11,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:53:11,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:53:11,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:53:11,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:53:11,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:53:11,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:53:11,692 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:53:11,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:53:11,692 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:53:11,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:53:11,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:53:11,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:53:11,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:53:11,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:53:11,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:53:11,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:53:11,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:53:11,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:53:11,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:53:11,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:53:11,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:53:11,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:53:11,695 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 08:53:11,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:53:11,986 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:53:11,989 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:53:11,991 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:53:11,991 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:53:11,992 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label44.c [2020-10-13 08:53:12,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7fac6aaf/f516a4b3c5bd4caeab7a70f5dc76883b/FLAG6a2269de5 [2020-10-13 08:53:12,591 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:53:12,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label44.c [2020-10-13 08:53:12,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7fac6aaf/f516a4b3c5bd4caeab7a70f5dc76883b/FLAG6a2269de5 [2020-10-13 08:53:12,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7fac6aaf/f516a4b3c5bd4caeab7a70f5dc76883b [2020-10-13 08:53:12,870 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:53:12,872 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:53:12,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:53:12,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:53:12,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:53:12,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:53:12" (1/1) ... [2020-10-13 08:53:12,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:53:12, skipping insertion in model container [2020-10-13 08:53:12,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:53:12" (1/1) ... [2020-10-13 08:53:12,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:53:12,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:53:13,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:53:13,504 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:53:13,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:53:13,649 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:53:13,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:53:13 WrapperNode [2020-10-13 08:53:13,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:53:13,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:53:13,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:53:13,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:53:13,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:53:13" (1/1) ... [2020-10-13 08:53:13,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:53:13" (1/1) ... [2020-10-13 08:53:13,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:53:13" (1/1) ... [2020-10-13 08:53:13,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:53:13" (1/1) ... [2020-10-13 08:53:13,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:53:13" (1/1) ... [2020-10-13 08:53:13,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:53:13" (1/1) ... [2020-10-13 08:53:13,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:53:13" (1/1) ... [2020-10-13 08:53:13,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:53:13,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:53:13,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:53:13,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:53:13,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:53:13" (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 08:53:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:53:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:53:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:53:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:53:13,849 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:53:13,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:53:13,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:53:13,849 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:53:13,849 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:53:13,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:53:13,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:53:15,152 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:53:15,153 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:53:15,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:53:15 BoogieIcfgContainer [2020-10-13 08:53:15,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:53:15,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:53:15,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:53:15,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:53:15,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:53:12" (1/3) ... [2020-10-13 08:53:15,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212d32ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:53:15, skipping insertion in model container [2020-10-13 08:53:15,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:53:13" (2/3) ... [2020-10-13 08:53:15,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212d32ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:53:15, skipping insertion in model container [2020-10-13 08:53:15,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:53:15" (3/3) ... [2020-10-13 08:53:15,168 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label44.c [2020-10-13 08:53:15,180 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:53:15,189 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:53:15,205 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:53:15,232 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:53:15,232 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:53:15,233 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:53:15,233 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:53:15,233 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:53:15,233 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:53:15,233 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:53:15,234 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:53:15,259 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2020-10-13 08:53:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 08:53:15,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:53:15,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:53:15,267 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:53:15,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:53:15,273 INFO L82 PathProgramCache]: Analyzing trace with hash -989093190, now seen corresponding path program 1 times [2020-10-13 08:53:15,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:53:15,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722417535] [2020-10-13 08:53:15,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:53:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:15,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:15,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:15,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 08:53:15,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:15,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-13 08:53:15,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:15,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:53:15,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:53:15,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:53:15,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:53:15,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:53:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:15,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:15,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:15,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:53:15,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:15,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 08:53:15,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:15,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:53:15,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:53:15,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:53:15,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:53:15,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:53:15,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722417535] [2020-10-13 08:53:15,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:53:15,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 08:53:15,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980655690] [2020-10-13 08:53:15,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:53:15,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:53:15,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:53:15,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:53:15,816 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 5 states. [2020-10-13 08:53:18,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:53:18,290 INFO L93 Difference]: Finished difference Result 886 states and 1613 transitions. [2020-10-13 08:53:18,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:53:18,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-13 08:53:18,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:53:18,313 INFO L225 Difference]: With dead ends: 886 [2020-10-13 08:53:18,313 INFO L226 Difference]: Without dead ends: 564 [2020-10-13 08:53:18,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:53:18,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-10-13 08:53:18,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 558. [2020-10-13 08:53:18,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2020-10-13 08:53:18,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 906 transitions. [2020-10-13 08:53:18,427 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 906 transitions. Word has length 17 [2020-10-13 08:53:18,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:53:18,428 INFO L479 AbstractCegarLoop]: Abstraction has 558 states and 906 transitions. [2020-10-13 08:53:18,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:53:18,429 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 906 transitions. [2020-10-13 08:53:18,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 08:53:18,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:53:18,438 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:53:18,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:53:18,438 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:53:18,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:53:18,439 INFO L82 PathProgramCache]: Analyzing trace with hash 291689686, now seen corresponding path program 1 times [2020-10-13 08:53:18,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:53:18,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909945170] [2020-10-13 08:53:18,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:53:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:18,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:18,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:19,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:19,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 08:53:19,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:53:19,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-10-13 08:53:19,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:53:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 08:53:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 08:53:19,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:53:19,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:53:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:19,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:19,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:19,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:53:19,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:19,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:53:19,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:19,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:53:19,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:53:19,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:53:19,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:53:19,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:53:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:19,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:19,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:19,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:53:19,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:19,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 08:53:19,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:19,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:53:19,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:53:19,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:53:19,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:53:19,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909945170] [2020-10-13 08:53:19,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:53:19,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:53:19,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066015449] [2020-10-13 08:53:19,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:53:19,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:53:19,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:53:19,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:53:19,560 INFO L87 Difference]: Start difference. First operand 558 states and 906 transitions. Second operand 5 states. [2020-10-13 08:53:21,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:53:21,266 INFO L93 Difference]: Finished difference Result 1668 states and 2746 transitions. [2020-10-13 08:53:21,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:53:21,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 08:53:21,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:53:21,273 INFO L225 Difference]: With dead ends: 1668 [2020-10-13 08:53:21,273 INFO L226 Difference]: Without dead ends: 1116 [2020-10-13 08:53:21,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:53:21,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2020-10-13 08:53:21,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 746. [2020-10-13 08:53:21,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-10-13 08:53:21,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1152 transitions. [2020-10-13 08:53:21,344 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1152 transitions. Word has length 103 [2020-10-13 08:53:21,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:53:21,345 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 1152 transitions. [2020-10-13 08:53:21,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:53:21,345 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1152 transitions. [2020-10-13 08:53:21,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 08:53:21,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:53:21,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:53:21,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:53:21,350 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:53:21,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:53:21,351 INFO L82 PathProgramCache]: Analyzing trace with hash 2036174565, now seen corresponding path program 1 times [2020-10-13 08:53:21,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:53:21,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083875974] [2020-10-13 08:53:21,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:53:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:21,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:21,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:21,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:53:21,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:21,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-13 08:53:21,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:21,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:53:21,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:53:21,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 08:53:21,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:21,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:53:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:21,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:21,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:21,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:53:21,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:21,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:53:21,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:21,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:53:21,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:53:21,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:53:21,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:21,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:53:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:21,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:21,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:21,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:53:21,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:21,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-13 08:53:21,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:53:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:53:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:53:21,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:22,135 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:53:22,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083875974] [2020-10-13 08:53:22,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:53:22,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 08:53:22,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630085644] [2020-10-13 08:53:22,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:53:22,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:53:22,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:53:22,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:53:22,139 INFO L87 Difference]: Start difference. First operand 746 states and 1152 transitions. Second operand 7 states. [2020-10-13 08:53:24,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:53:24,056 INFO L93 Difference]: Finished difference Result 2254 states and 3548 transitions. [2020-10-13 08:53:24,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 08:53:24,057 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-10-13 08:53:24,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:53:24,078 INFO L225 Difference]: With dead ends: 2254 [2020-10-13 08:53:24,078 INFO L226 Difference]: Without dead ends: 1514 [2020-10-13 08:53:24,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:53:24,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2020-10-13 08:53:24,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 942. [2020-10-13 08:53:24,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 942 states. [2020-10-13 08:53:24,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1290 transitions. [2020-10-13 08:53:24,161 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1290 transitions. Word has length 112 [2020-10-13 08:53:24,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:53:24,162 INFO L479 AbstractCegarLoop]: Abstraction has 942 states and 1290 transitions. [2020-10-13 08:53:24,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:53:24,162 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1290 transitions. [2020-10-13 08:53:24,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-13 08:53:24,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:53:24,172 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:53:24,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:53:24,173 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:53:24,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:53:24,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1137862238, now seen corresponding path program 1 times [2020-10-13 08:53:24,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:53:24,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101631743] [2020-10-13 08:53:24,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:53:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:24,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:24,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:25,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:26,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:26,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-13 08:53:26,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:53:26,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2013 [2020-10-13 08:53:26,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:53:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-13 08:53:26,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:53:26,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:26,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:53:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:26,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:26,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:26,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:53:26,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:26,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:53:26,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:26,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:53:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:53:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:53:26,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 08:53:26,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:53:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:26,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:26,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:26,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:53:26,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:26,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 08:53:26,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:26,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:53:26,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:53:26,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 08:53:26,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:26,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 08:53:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:26,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:26,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:26,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:53:26,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:26,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 08:53:26,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:53:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:53:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:53:26,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:53:26,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101631743] [2020-10-13 08:53:26,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:53:26,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:53:26,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708629736] [2020-10-13 08:53:26,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:53:26,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:53:26,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:53:26,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:53:26,877 INFO L87 Difference]: Start difference. First operand 942 states and 1290 transitions. Second operand 7 states. [2020-10-13 08:53:28,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:53:28,456 INFO L93 Difference]: Finished difference Result 2630 states and 3597 transitions. [2020-10-13 08:53:28,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 08:53:28,459 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-10-13 08:53:28,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:53:28,472 INFO L225 Difference]: With dead ends: 2630 [2020-10-13 08:53:28,473 INFO L226 Difference]: Without dead ends: 1694 [2020-10-13 08:53:28,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:53:28,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2020-10-13 08:53:28,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1688. [2020-10-13 08:53:28,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1688 states. [2020-10-13 08:53:28,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2186 transitions. [2020-10-13 08:53:28,537 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2186 transitions. Word has length 221 [2020-10-13 08:53:28,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:53:28,539 INFO L479 AbstractCegarLoop]: Abstraction has 1688 states and 2186 transitions. [2020-10-13 08:53:28,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:53:28,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2186 transitions. [2020-10-13 08:53:28,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-13 08:53:28,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:53:28,549 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:53:28,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:53:28,549 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:53:28,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:53:28,550 INFO L82 PathProgramCache]: Analyzing trace with hash 5676429, now seen corresponding path program 1 times [2020-10-13 08:53:28,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:53:28,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156850564] [2020-10-13 08:53:28,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:53:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:28,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:28,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:28,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:33,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:33,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 08:53:33,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:53:33,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 08:53:33,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:33,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:53:33,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 194 [2020-10-13 08:53:33,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:53:33,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:33,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:53:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:33,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:33,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:33,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:53:33,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:33,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:53:33,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:53:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:53:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:53:33,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:33,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:53:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:33,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:33,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:33,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:53:33,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:33,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 08:53:33,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:33,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:53:33,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:53:33,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:53:33,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:33,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 08:53:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:33,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:33,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:33,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:53:33,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:33,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 08:53:33,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:33,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:53:33,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:53:33,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:53:33,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:53:33,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-13 08:53:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:33,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:34,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:34,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:34,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:53:34,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:53:34,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-13 08:53:34,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:34,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:53:34,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:53:34,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:53:34,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 08:53:35,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156850564] [2020-10-13 08:53:35,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:53:35,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 08:53:35,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535751213] [2020-10-13 08:53:35,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 08:53:35,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:53:35,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 08:53:35,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:53:35,006 INFO L87 Difference]: Start difference. First operand 1688 states and 2186 transitions. Second operand 10 states. [2020-10-13 08:53:37,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:53:37,660 INFO L93 Difference]: Finished difference Result 3507 states and 4578 transitions. [2020-10-13 08:53:37,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 08:53:37,660 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 294 [2020-10-13 08:53:37,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:53:37,669 INFO L225 Difference]: With dead ends: 3507 [2020-10-13 08:53:37,670 INFO L226 Difference]: Without dead ends: 1833 [2020-10-13 08:53:37,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-10-13 08:53:37,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1833 states. [2020-10-13 08:53:37,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1833 to 1682. [2020-10-13 08:53:37,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2020-10-13 08:53:37,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 1877 transitions. [2020-10-13 08:53:37,719 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 1877 transitions. Word has length 294 [2020-10-13 08:53:37,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:53:37,719 INFO L479 AbstractCegarLoop]: Abstraction has 1682 states and 1877 transitions. [2020-10-13 08:53:37,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 08:53:37,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 1877 transitions. [2020-10-13 08:53:37,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-10-13 08:53:37,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:53:37,727 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:53:37,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:53:37,728 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:53:37,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:53:37,728 INFO L82 PathProgramCache]: Analyzing trace with hash -476605607, now seen corresponding path program 1 times [2020-10-13 08:53:37,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:53:37,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470148948] [2020-10-13 08:53:37,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:53:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:37,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:37,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:38,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:42,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:42,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:42,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 414 [2020-10-13 08:53:42,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:53:42,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-13 08:53:42,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:53:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 300 [2020-10-13 08:53:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:53:42,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:42,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:53:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:42,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:42,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:42,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:53:42,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:42,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:53:42,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:42,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:53:42,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:53:42,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:53:42,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:42,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:53:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:43,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:43,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:43,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:53:43,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:43,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:53:43,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:53:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:53:43,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:53:43,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:43,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 08:53:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:43,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:43,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:43,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:53:43,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:43,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-13 08:53:43,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:43,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:53:43,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:53:43,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-13 08:53:43,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:53:43,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-13 08:53:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:43,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:43,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:43,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:53:43,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:43,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-13 08:53:43,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:53:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:53:43,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:53:43,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:53:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-13 08:53:44,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470148948] [2020-10-13 08:53:44,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:53:44,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:53:44,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072076521] [2020-10-13 08:53:44,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:53:44,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:53:44,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:53:44,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:53:44,035 INFO L87 Difference]: Start difference. First operand 1682 states and 1877 transitions. Second operand 7 states. [2020-10-13 08:53:45,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:53:45,578 INFO L93 Difference]: Finished difference Result 3786 states and 4487 transitions. [2020-10-13 08:53:45,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:53:45,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 400 [2020-10-13 08:53:45,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:53:45,591 INFO L225 Difference]: With dead ends: 3786 [2020-10-13 08:53:45,591 INFO L226 Difference]: Without dead ends: 2292 [2020-10-13 08:53:45,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:53:45,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2020-10-13 08:53:45,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 2058. [2020-10-13 08:53:45,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2058 states. [2020-10-13 08:53:45,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 2294 transitions. [2020-10-13 08:53:45,673 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 2294 transitions. Word has length 400 [2020-10-13 08:53:45,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:53:45,674 INFO L479 AbstractCegarLoop]: Abstraction has 2058 states and 2294 transitions. [2020-10-13 08:53:45,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:53:45,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 2294 transitions. [2020-10-13 08:53:45,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-10-13 08:53:45,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:53:45,685 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:53:45,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:53:45,685 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:53:45,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:53:45,686 INFO L82 PathProgramCache]: Analyzing trace with hash 504892294, now seen corresponding path program 1 times [2020-10-13 08:53:45,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:53:45,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527911888] [2020-10-13 08:53:45,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:53:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:45,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:45,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:46,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:50,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:50,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:50,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-13 08:53:50,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:53:50,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 08:53:50,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:53:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 381 [2020-10-13 08:53:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:53:50,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:50,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:53:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:50,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:50,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:50,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:53:50,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:50,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:53:50,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:50,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:53:50,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:53:50,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:53:50,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:50,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:53:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:50,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:50,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:50,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:53:50,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:50,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:53:50,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:53:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:53:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:53:50,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:50,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 08:53:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:50,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:50,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:50,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:53:50,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:50,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 08:53:50,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:50,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:53:50,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:53:50,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:53:50,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:51,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-13 08:53:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:51,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:51,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:51,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:53:51,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:51,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 08:53:51,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:51,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:53:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:53:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:53:51,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:53:51,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-13 08:53:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:51,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:51,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:51,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:53:51,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:51,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 08:53:51,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:51,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:53:51,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:53:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:53:51,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:51,658 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 08:53:51,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527911888] [2020-10-13 08:53:51,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:53:51,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:53:51,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470073703] [2020-10-13 08:53:51,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:53:51,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:53:51,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:53:51,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:53:51,661 INFO L87 Difference]: Start difference. First operand 2058 states and 2294 transitions. Second operand 7 states. [2020-10-13 08:53:53,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:53:53,174 INFO L93 Difference]: Finished difference Result 4864 states and 5575 transitions. [2020-10-13 08:53:53,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:53:53,178 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 479 [2020-10-13 08:53:53,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:53:53,199 INFO L225 Difference]: With dead ends: 4864 [2020-10-13 08:53:53,199 INFO L226 Difference]: Without dead ends: 2994 [2020-10-13 08:53:53,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:53:53,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-10-13 08:53:53,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2806. [2020-10-13 08:53:53,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2806 states. [2020-10-13 08:53:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 3115 transitions. [2020-10-13 08:53:53,271 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 3115 transitions. Word has length 479 [2020-10-13 08:53:53,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:53:53,272 INFO L479 AbstractCegarLoop]: Abstraction has 2806 states and 3115 transitions. [2020-10-13 08:53:53,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:53:53,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 3115 transitions. [2020-10-13 08:53:53,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2020-10-13 08:53:53,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:53:53,285 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:53:53,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:53:53,286 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:53:53,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:53:53,286 INFO L82 PathProgramCache]: Analyzing trace with hash -814101255, now seen corresponding path program 1 times [2020-10-13 08:53:53,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:53:53,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854377580] [2020-10-13 08:53:53,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:53:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:53,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:53,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:53,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:54,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:58,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:58,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 494 [2020-10-13 08:53:58,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:53:58,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 08:53:58,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:53:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 477 [2020-10-13 08:53:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 08:53:58,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:58,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:53:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:58,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:58,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:58,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:53:58,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:58,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:53:58,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:58,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:53:58,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:53:58,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:53:58,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:58,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:53:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:58,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:58,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:58,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:53:58,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:58,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:53:58,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:58,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:53:58,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:53:58,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:53:58,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:58,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 08:53:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:58,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:58,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:58,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:53:58,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:58,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 08:53:58,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:58,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:53:58,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:53:58,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:53:58,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:58,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-13 08:53:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:53:58,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:53:58,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:53:58,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:53:58,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:53:58,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 08:53:58,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:53:58,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:53:58,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:53:58,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-13 08:53:58,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:53:58,899 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2020-10-13 08:53:58,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854377580] [2020-10-13 08:53:58,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:53:58,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:53:58,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169286284] [2020-10-13 08:53:58,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:53:58,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:53:58,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:53:58,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:53:58,901 INFO L87 Difference]: Start difference. First operand 2806 states and 3115 transitions. Second operand 5 states. [2020-10-13 08:54:00,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:54:00,019 INFO L93 Difference]: Finished difference Result 6344 states and 7208 transitions. [2020-10-13 08:54:00,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:54:00,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 480 [2020-10-13 08:54:00,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:54:00,034 INFO L225 Difference]: With dead ends: 6344 [2020-10-13 08:54:00,034 INFO L226 Difference]: Without dead ends: 3726 [2020-10-13 08:54:00,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:54:00,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3726 states. [2020-10-13 08:54:00,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3726 to 3544. [2020-10-13 08:54:00,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3544 states. [2020-10-13 08:54:00,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 3976 transitions. [2020-10-13 08:54:00,132 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 3976 transitions. Word has length 480 [2020-10-13 08:54:00,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:54:00,133 INFO L479 AbstractCegarLoop]: Abstraction has 3544 states and 3976 transitions. [2020-10-13 08:54:00,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:54:00,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 3976 transitions. [2020-10-13 08:54:00,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2020-10-13 08:54:00,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:54:00,141 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:54:00,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:54:00,142 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:54:00,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:54:00,142 INFO L82 PathProgramCache]: Analyzing trace with hash -2053845315, now seen corresponding path program 1 times [2020-10-13 08:54:00,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:54:00,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707781583] [2020-10-13 08:54:00,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:54:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:00,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:00,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:00,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:00,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:05,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:05,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-13 08:54:05,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:54:05,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 08:54:05,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:05,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:54:05,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 388 [2020-10-13 08:54:05,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 08:54:05,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:05,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:54:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:05,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:05,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:05,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:54:05,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:05,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:54:05,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:05,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:05,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:05,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:05,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:05,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:54:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:05,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:05,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:05,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:54:05,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:05,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:54:05,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:05,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:05,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:05,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:05,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:05,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 08:54:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:05,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:05,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:05,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:54:05,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:05,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 08:54:05,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:05,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:05,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:05,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:05,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:05,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-13 08:54:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:05,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:05,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:05,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:54:05,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:05,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 08:54:05,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:54:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:54:05,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:05,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-10-13 08:54:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:05,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:05,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:05,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:05,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:54:05,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:54:05,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-13 08:54:05,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:05,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:54:05,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:54:05,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:54:05,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 317 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-13 08:54:05,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707781583] [2020-10-13 08:54:05,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:54:05,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:54:05,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967793357] [2020-10-13 08:54:05,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:54:05,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:54:05,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:54:05,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:54:05,934 INFO L87 Difference]: Start difference. First operand 3544 states and 3976 transitions. Second operand 7 states. [2020-10-13 08:54:07,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:54:07,480 INFO L93 Difference]: Finished difference Result 7118 states and 8068 transitions. [2020-10-13 08:54:07,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:54:07,481 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 486 [2020-10-13 08:54:07,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:54:07,494 INFO L225 Difference]: With dead ends: 7118 [2020-10-13 08:54:07,495 INFO L226 Difference]: Without dead ends: 3578 [2020-10-13 08:54:07,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:54:07,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3578 states. [2020-10-13 08:54:07,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3578 to 3546. [2020-10-13 08:54:07,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3546 states. [2020-10-13 08:54:07,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 3970 transitions. [2020-10-13 08:54:07,589 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 3970 transitions. Word has length 486 [2020-10-13 08:54:07,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:54:07,590 INFO L479 AbstractCegarLoop]: Abstraction has 3546 states and 3970 transitions. [2020-10-13 08:54:07,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:54:07,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 3970 transitions. [2020-10-13 08:54:07,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2020-10-13 08:54:07,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:54:07,600 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:54:07,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:54:07,600 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:54:07,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:54:07,601 INFO L82 PathProgramCache]: Analyzing trace with hash 459202449, now seen corresponding path program 1 times [2020-10-13 08:54:07,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:54:07,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931318923] [2020-10-13 08:54:07,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:54:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:07,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:07,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:07,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:09,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:12,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:12,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 508 [2020-10-13 08:54:12,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:54:12,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 08:54:12,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:54:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 394 [2020-10-13 08:54:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:54:12,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:12,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:54:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:12,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:12,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:12,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:54:12,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:12,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:54:12,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:12,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:12,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:54:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:12,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:12,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:12,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:54:12,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:12,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:54:12,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:12,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:12,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:12,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:12,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:12,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 08:54:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:12,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:12,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:12,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:54:12,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:12,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 08:54:12,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:12,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:12,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:12,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:12,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:12,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-13 08:54:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:12,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:12,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:12,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 08:54:12,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:12,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 08:54:12,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:54:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 08:54:12,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:13,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2020-10-13 08:54:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:13,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:13,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:13,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:13,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:54:13,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:54:13,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 08:54:13,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:13,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:54:13,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:54:13,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:54:13,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:13,386 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 323 proven. 2 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2020-10-13 08:54:13,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931318923] [2020-10-13 08:54:13,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:54:13,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:54:13,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266015524] [2020-10-13 08:54:13,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:54:13,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:54:13,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:54:13,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:54:13,389 INFO L87 Difference]: Start difference. First operand 3546 states and 3970 transitions. Second operand 6 states. [2020-10-13 08:54:14,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:54:14,348 INFO L93 Difference]: Finished difference Result 6929 states and 7805 transitions. [2020-10-13 08:54:14,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:54:14,349 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 492 [2020-10-13 08:54:14,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:54:14,362 INFO L225 Difference]: With dead ends: 6929 [2020-10-13 08:54:14,363 INFO L226 Difference]: Without dead ends: 3556 [2020-10-13 08:54:14,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:54:14,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2020-10-13 08:54:14,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 3544. [2020-10-13 08:54:14,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3544 states. [2020-10-13 08:54:14,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 3959 transitions. [2020-10-13 08:54:14,448 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 3959 transitions. Word has length 492 [2020-10-13 08:54:14,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:54:14,449 INFO L479 AbstractCegarLoop]: Abstraction has 3544 states and 3959 transitions. [2020-10-13 08:54:14,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:54:14,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 3959 transitions. [2020-10-13 08:54:14,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2020-10-13 08:54:14,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:54:14,458 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:54:14,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:54:14,458 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:54:14,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:54:14,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1820118070, now seen corresponding path program 1 times [2020-10-13 08:54:14,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:54:14,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924505215] [2020-10-13 08:54:14,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:54:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:14,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:14,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:15,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:17,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:17,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:19,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:19,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 519 [2020-10-13 08:54:19,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:54:19,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 08:54:19,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:19,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:54:19,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 502 [2020-10-13 08:54:19,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 08:54:19,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:19,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:54:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:19,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:19,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:19,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:54:19,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:19,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:54:19,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:19,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:19,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:19,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:19,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:19,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:54:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:19,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:19,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:19,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:54:19,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:19,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 08:54:19,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:19,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:19,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:19,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:19,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:19,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 08:54:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:19,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:19,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:19,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:54:19,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:19,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:54:19,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:19,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:19,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-13 08:54:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:19,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:19,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:19,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:54:19,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:19,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:54:19,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:19,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:19,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:19,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:19,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:19,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-13 08:54:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:19,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:19,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:19,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 08:54:19,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:19,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 08:54:19,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:19,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:54:19,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:19,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 08:54:19,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:20,017 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 45 proven. 4 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2020-10-13 08:54:20,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924505215] [2020-10-13 08:54:20,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:54:20,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:54:20,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922463454] [2020-10-13 08:54:20,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:54:20,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:54:20,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:54:20,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:54:20,019 INFO L87 Difference]: Start difference. First operand 3544 states and 3959 transitions. Second operand 6 states. [2020-10-13 08:54:21,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:54:21,054 INFO L93 Difference]: Finished difference Result 4096 states and 4719 transitions. [2020-10-13 08:54:21,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:54:21,054 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 503 [2020-10-13 08:54:21,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:54:21,069 INFO L225 Difference]: With dead ends: 4096 [2020-10-13 08:54:21,069 INFO L226 Difference]: Without dead ends: 4094 [2020-10-13 08:54:21,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:54:21,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2020-10-13 08:54:21,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 3542. [2020-10-13 08:54:21,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3542 states. [2020-10-13 08:54:21,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 3952 transitions. [2020-10-13 08:54:21,149 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 3952 transitions. Word has length 503 [2020-10-13 08:54:21,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:54:21,150 INFO L479 AbstractCegarLoop]: Abstraction has 3542 states and 3952 transitions. [2020-10-13 08:54:21,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:54:21,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 3952 transitions. [2020-10-13 08:54:21,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2020-10-13 08:54:21,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:54:21,159 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:54:21,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:54:21,159 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:54:21,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:54:21,159 INFO L82 PathProgramCache]: Analyzing trace with hash -917063367, now seen corresponding path program 1 times [2020-10-13 08:54:21,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:54:21,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815745531] [2020-10-13 08:54:21,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:54:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:21,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:21,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:21,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:21,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:26,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:26,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 520 [2020-10-13 08:54:26,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:54:26,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 08:54:26,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:54:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 406 [2020-10-13 08:54:26,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 08:54:26,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:26,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:54:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:26,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:26,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:26,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:54:26,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:26,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:54:26,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:26,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:26,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:26,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:26,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:26,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:54:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:26,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:26,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:26,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:54:26,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:26,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:54:26,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:26,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:26,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:26,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:26,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:26,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 08:54:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:26,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:26,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:26,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:54:26,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:26,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:54:26,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:26,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:26,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:26,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:26,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:26,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-13 08:54:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:26,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:26,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:26,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 08:54:26,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:26,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:54:26,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:26,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:54:26,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:26,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 08:54:26,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:26,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2020-10-13 08:54:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:26,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:26,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:26,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:26,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:54:26,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:54:26,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-13 08:54:26,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:26,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:54:26,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:54:26,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:54:26,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2020-10-13 08:54:26,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815745531] [2020-10-13 08:54:26,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:54:26,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:54:26,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204633188] [2020-10-13 08:54:26,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:54:26,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:54:26,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:54:26,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:54:26,917 INFO L87 Difference]: Start difference. First operand 3542 states and 3952 transitions. Second operand 7 states. [2020-10-13 08:54:28,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:54:28,417 INFO L93 Difference]: Finished difference Result 7116 states and 7972 transitions. [2020-10-13 08:54:28,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:54:28,419 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 504 [2020-10-13 08:54:28,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:54:28,431 INFO L225 Difference]: With dead ends: 7116 [2020-10-13 08:54:28,431 INFO L226 Difference]: Without dead ends: 3736 [2020-10-13 08:54:28,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:54:28,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2020-10-13 08:54:28,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3546. [2020-10-13 08:54:28,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3546 states. [2020-10-13 08:54:28,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 3957 transitions. [2020-10-13 08:54:28,508 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 3957 transitions. Word has length 504 [2020-10-13 08:54:28,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:54:28,508 INFO L479 AbstractCegarLoop]: Abstraction has 3546 states and 3957 transitions. [2020-10-13 08:54:28,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:54:28,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 3957 transitions. [2020-10-13 08:54:28,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2020-10-13 08:54:28,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:54:28,517 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:54:28,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:54:28,518 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:54:28,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:54:28,518 INFO L82 PathProgramCache]: Analyzing trace with hash -656840579, now seen corresponding path program 1 times [2020-10-13 08:54:28,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:54:28,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700031363] [2020-10-13 08:54:28,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:54:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:28,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:28,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:29,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:31,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:33,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:33,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 534 [2020-10-13 08:54:33,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:54:33,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 08:54:33,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:54:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 420 [2020-10-13 08:54:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:54:33,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:33,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:54:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:33,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:33,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:33,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:54:33,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:33,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:54:33,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:33,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:33,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:33,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:33,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:33,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:54:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:33,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:33,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:33,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:54:33,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:33,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 08:54:33,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:33,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:33,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:33,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:33,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 08:54:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:33,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:33,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:33,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:54:33,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:33,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:54:33,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:33,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:33,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:33,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:33,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:33,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-13 08:54:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:33,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:33,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:33,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:54:33,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:33,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 08:54:33,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:33,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:54:33,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:33,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 08:54:33,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:33,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2020-10-13 08:54:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:33,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:34,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:34,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:54:34,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:34,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 08:54:34,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:34,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:54:34,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:54:34,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:54:34,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2020-10-13 08:54:34,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700031363] [2020-10-13 08:54:34,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:54:34,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:54:34,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780330957] [2020-10-13 08:54:34,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:54:34,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:54:34,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:54:34,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:54:34,322 INFO L87 Difference]: Start difference. First operand 3546 states and 3957 transitions. Second operand 8 states. [2020-10-13 08:54:35,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:54:35,919 INFO L93 Difference]: Finished difference Result 7274 states and 8146 transitions. [2020-10-13 08:54:35,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:54:35,924 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 518 [2020-10-13 08:54:35,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:54:35,934 INFO L225 Difference]: With dead ends: 7274 [2020-10-13 08:54:35,935 INFO L226 Difference]: Without dead ends: 3916 [2020-10-13 08:54:35,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-13 08:54:35,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3916 states. [2020-10-13 08:54:36,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3916 to 3546. [2020-10-13 08:54:36,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3546 states. [2020-10-13 08:54:36,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 3957 transitions. [2020-10-13 08:54:36,018 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 3957 transitions. Word has length 518 [2020-10-13 08:54:36,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:54:36,019 INFO L479 AbstractCegarLoop]: Abstraction has 3546 states and 3957 transitions. [2020-10-13 08:54:36,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:54:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 3957 transitions. [2020-10-13 08:54:36,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2020-10-13 08:54:36,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:54:36,030 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:54:36,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 08:54:36,030 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:54:36,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:54:36,030 INFO L82 PathProgramCache]: Analyzing trace with hash 648942338, now seen corresponding path program 1 times [2020-10-13 08:54:36,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:54:36,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103593991] [2020-10-13 08:54:36,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:54:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:36,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:36,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:36,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:37,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:41,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:41,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 545 [2020-10-13 08:54:41,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:54:41,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 08:54:41,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:41,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:54:41,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 431 [2020-10-13 08:54:41,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 08:54:41,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:41,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:54:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:41,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:41,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:41,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:54:41,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:41,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:54:41,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:41,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:41,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:41,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:41,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:41,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:54:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:41,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:41,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:41,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:54:41,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:41,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:54:41,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:41,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:41,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:41,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:41,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:41,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 08:54:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:41,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:41,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:41,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:54:41,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:41,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 08:54:41,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:41,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:41,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:41,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:41,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:41,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-13 08:54:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:41,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:41,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:41,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 08:54:41,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:41,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 08:54:41,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:41,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:54:41,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:41,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 08:54:41,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:41,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-13 08:54:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:41,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:41,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:41,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:41,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:54:41,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:54:41,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 08:54:41,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:41,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:54:41,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:54:41,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:54:41,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:41,802 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-10-13 08:54:42,218 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2020-10-13 08:54:42,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103593991] [2020-10-13 08:54:42,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:54:42,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:54:42,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037833095] [2020-10-13 08:54:42,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:54:42,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:54:42,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:54:42,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:54:42,220 INFO L87 Difference]: Start difference. First operand 3546 states and 3957 transitions. Second operand 7 states. [2020-10-13 08:54:43,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:54:43,321 INFO L93 Difference]: Finished difference Result 6933 states and 7779 transitions. [2020-10-13 08:54:43,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 08:54:43,321 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 529 [2020-10-13 08:54:43,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:54:43,331 INFO L225 Difference]: With dead ends: 6933 [2020-10-13 08:54:43,331 INFO L226 Difference]: Without dead ends: 3561 [2020-10-13 08:54:43,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:54:43,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2020-10-13 08:54:43,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3546. [2020-10-13 08:54:43,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3546 states. [2020-10-13 08:54:43,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 3952 transitions. [2020-10-13 08:54:43,404 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 3952 transitions. Word has length 529 [2020-10-13 08:54:43,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:54:43,405 INFO L479 AbstractCegarLoop]: Abstraction has 3546 states and 3952 transitions. [2020-10-13 08:54:43,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:54:43,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 3952 transitions. [2020-10-13 08:54:43,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2020-10-13 08:54:43,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:54:43,414 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:54:43,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 08:54:43,414 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:54:43,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:54:43,415 INFO L82 PathProgramCache]: Analyzing trace with hash 793927938, now seen corresponding path program 1 times [2020-10-13 08:54:43,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:54:43,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331044518] [2020-10-13 08:54:43,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:54:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:43,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:43,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:43,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:43,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:46,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:48,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:48,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 571 [2020-10-13 08:54:48,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:54:48,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 08:54:48,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:48,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:54:48,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 457 [2020-10-13 08:54:48,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 08:54:48,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:48,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:54:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:48,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:48,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:48,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:54:48,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:48,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:54:48,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:48,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:48,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:48,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:48,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:48,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:54:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:48,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:48,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:48,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:54:48,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:48,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:54:48,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:48,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:48,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 08:54:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:48,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:48,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:48,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:54:48,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:48,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:54:48,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:48,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:48,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:48,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:48,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:48,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-13 08:54:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:48,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:48,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:48,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:54:48,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:48,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:54:48,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:48,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:48,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:48,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:48,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:48,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-13 08:54:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:48,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:48,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:48,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 08:54:48,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:48,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 08:54:48,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:54:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:54:48,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:48,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-10-13 08:54:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:48,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:48,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:48,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:48,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:54:48,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:54:48,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 08:54:48,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:48,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:54:48,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:54:48,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:54:48,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 396 proven. 2 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2020-10-13 08:54:49,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331044518] [2020-10-13 08:54:49,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:54:49,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:54:49,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269401670] [2020-10-13 08:54:49,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:54:49,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:54:49,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:54:49,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:54:49,294 INFO L87 Difference]: Start difference. First operand 3546 states and 3952 transitions. Second operand 6 states. [2020-10-13 08:54:50,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:54:50,243 INFO L93 Difference]: Finished difference Result 6937 states and 7791 transitions. [2020-10-13 08:54:50,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:54:50,244 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 553 [2020-10-13 08:54:50,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:54:50,252 INFO L225 Difference]: With dead ends: 6937 [2020-10-13 08:54:50,252 INFO L226 Difference]: Without dead ends: 3561 [2020-10-13 08:54:50,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:54:50,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2020-10-13 08:54:50,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3546. [2020-10-13 08:54:50,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3546 states. [2020-10-13 08:54:50,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 3946 transitions. [2020-10-13 08:54:50,329 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 3946 transitions. Word has length 553 [2020-10-13 08:54:50,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:54:50,330 INFO L479 AbstractCegarLoop]: Abstraction has 3546 states and 3946 transitions. [2020-10-13 08:54:50,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:54:50,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 3946 transitions. [2020-10-13 08:54:50,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2020-10-13 08:54:50,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:54:50,341 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:54:50,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 08:54:50,341 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:54:50,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:54:50,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1679141690, now seen corresponding path program 1 times [2020-10-13 08:54:50,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:54:50,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877228926] [2020-10-13 08:54:50,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:54:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:50,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:50,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:50,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:50,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:55,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:55,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 591 [2020-10-13 08:54:55,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:54:55,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 08:54:55,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:55,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:54:55,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 477 [2020-10-13 08:54:55,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 08:54:55,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:55,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:54:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:55,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:55,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:55,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:54:55,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:55,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:54:55,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:55,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:55,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:55,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:55,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:55,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:54:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:55,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:55,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:55,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:54:55,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:55,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:54:55,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:55,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:55,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:55,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:55,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:55,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 08:54:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:55,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:55,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:55,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:54:55,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:55,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 08:54:55,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:55,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:54:55,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:55,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:54:55,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:55,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-13 08:54:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:55,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:55,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:55,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:54:55,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:54:55,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 08:54:55,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:55,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:54:55,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:54:55,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-13 08:54:55,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:55,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-10-13 08:54:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:55,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:55,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:55,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:54:55,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:54:55,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:54:55,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 08:54:55,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:54:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:54:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:54:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:54:55,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:54:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2020-10-13 08:54:56,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877228926] [2020-10-13 08:54:56,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:54:56,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:54:56,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844056334] [2020-10-13 08:54:56,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:54:56,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:54:56,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:54:56,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:54:56,264 INFO L87 Difference]: Start difference. First operand 3546 states and 3946 transitions. Second operand 7 states. [2020-10-13 08:54:57,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:54:57,328 INFO L93 Difference]: Finished difference Result 6947 states and 7774 transitions. [2020-10-13 08:54:57,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:54:57,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 575 [2020-10-13 08:54:57,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:54:57,338 INFO L225 Difference]: With dead ends: 6947 [2020-10-13 08:54:57,338 INFO L226 Difference]: Without dead ends: 3565 [2020-10-13 08:54:57,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:54:57,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3565 states. [2020-10-13 08:54:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3565 to 3544. [2020-10-13 08:54:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3544 states. [2020-10-13 08:54:57,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 3939 transitions. [2020-10-13 08:54:57,420 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 3939 transitions. Word has length 575 [2020-10-13 08:54:57,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:54:57,421 INFO L479 AbstractCegarLoop]: Abstraction has 3544 states and 3939 transitions. [2020-10-13 08:54:57,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:54:57,421 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 3939 transitions. [2020-10-13 08:54:57,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2020-10-13 08:54:57,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:54:57,439 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:54:57,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 08:54:57,440 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:54:57,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:54:57,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1442997857, now seen corresponding path program 1 times [2020-10-13 08:54:57,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:54:57,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763638494] [2020-10-13 08:54:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:54:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:54:57,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:57,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:54:58,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:02,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:02,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 596 [2020-10-13 08:55:02,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:55:02,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 08:55:02,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:02,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:55:02,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:55:02,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 08:55:02,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:02,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:55:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:02,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:02,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:02,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:55:02,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:02,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:55:02,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:55:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:55:02,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:02,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:55:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:02,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:02,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:02,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:55:02,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:02,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 08:55:02,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:02,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:55:02,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:55:02,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 08:55:02,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:02,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 08:55:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:02,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:02,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:02,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:55:02,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:02,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 08:55:02,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:02,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:02,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:55:02,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:02,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:02,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-13 08:55:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:02,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:02,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:02,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:55:02,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:02,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 08:55:02,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 08:55:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:02,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:02,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2020-10-13 08:55:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:02,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:03,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:03,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:55:03,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:03,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:55:03,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:03,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:03,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 08:55:03,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:03,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:03,187 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 40 proven. 298 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-13 08:55:03,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763638494] [2020-10-13 08:55:03,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:55:03,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:55:03,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095039101] [2020-10-13 08:55:03,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:55:03,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:55:03,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:55:03,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:55:03,189 INFO L87 Difference]: Start difference. First operand 3544 states and 3939 transitions. Second operand 7 states. [2020-10-13 08:55:04,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:55:04,314 INFO L93 Difference]: Finished difference Result 7268 states and 8166 transitions. [2020-10-13 08:55:04,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:55:04,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 580 [2020-10-13 08:55:04,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:55:04,324 INFO L225 Difference]: With dead ends: 7268 [2020-10-13 08:55:04,324 INFO L226 Difference]: Without dead ends: 3912 [2020-10-13 08:55:04,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:55:04,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2020-10-13 08:55:04,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3912. [2020-10-13 08:55:04,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3912 states. [2020-10-13 08:55:04,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3912 states to 3912 states and 4324 transitions. [2020-10-13 08:55:04,405 INFO L78 Accepts]: Start accepts. Automaton has 3912 states and 4324 transitions. Word has length 580 [2020-10-13 08:55:04,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:55:04,405 INFO L479 AbstractCegarLoop]: Abstraction has 3912 states and 4324 transitions. [2020-10-13 08:55:04,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:55:04,406 INFO L276 IsEmpty]: Start isEmpty. Operand 3912 states and 4324 transitions. [2020-10-13 08:55:04,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2020-10-13 08:55:04,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:55:04,420 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:55:04,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 08:55:04,421 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:55:04,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:55:04,421 INFO L82 PathProgramCache]: Analyzing trace with hash -258944586, now seen corresponding path program 1 times [2020-10-13 08:55:04,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:55:04,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526819244] [2020-10-13 08:55:04,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:55:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:04,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:04,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:05,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:08,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:08,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 827 [2020-10-13 08:55:08,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:55:08,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3946 [2020-10-13 08:55:08,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:08,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 08:55:08,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-13 08:55:08,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-13 08:55:08,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:08,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:55:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:08,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:08,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:08,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:55:08,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:08,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:55:08,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:08,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:08,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:08,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:08,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:08,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:55:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:08,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:08,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:08,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:55:08,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:08,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:55:08,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:08,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:08,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:08,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:08,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:08,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:55:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:08,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:08,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:08,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:55:08,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:08,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:55:08,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:08,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:08,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:08,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:08,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:08,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 08:55:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:08,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:08,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:08,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:55:08,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:08,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 08:55:08,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:08,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:55:08,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:08,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 08:55:08,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:08,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-13 08:55:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:08,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:09,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:09,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:09,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:55:09,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:55:09,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-13 08:55:09,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:09,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 08:55:09,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:55:09,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:55:09,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:10,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-10-13 08:55:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:10,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:10,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:10,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:55:10,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:10,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 08:55:10,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:10,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:10,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 08:55:10,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:10,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:10,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 703 [2020-10-13 08:55:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:10,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:10,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:10,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:55:10,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:10,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 08:55:10,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:10,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:10,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 08:55:10,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:10,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:11,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1714 backedges. 421 proven. 270 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2020-10-13 08:55:11,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526819244] [2020-10-13 08:55:11,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:55:11,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 08:55:11,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784017343] [2020-10-13 08:55:11,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 08:55:11,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:55:11,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 08:55:11,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:55:11,539 INFO L87 Difference]: Start difference. First operand 3912 states and 4324 transitions. Second operand 13 states. [2020-10-13 08:55:12,454 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-13 08:55:12,678 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-10-13 08:55:12,837 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-10-13 08:55:13,007 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-10-13 08:55:13,208 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2020-10-13 08:55:13,434 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2020-10-13 08:55:14,061 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2020-10-13 08:55:14,536 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2020-10-13 08:55:14,802 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2020-10-13 08:55:14,976 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2020-10-13 08:55:15,185 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2020-10-13 08:55:15,401 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 68 [2020-10-13 08:55:15,650 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-13 08:55:15,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:55:15,862 INFO L93 Difference]: Finished difference Result 7818 states and 8656 transitions. [2020-10-13 08:55:15,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 08:55:15,863 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 807 [2020-10-13 08:55:15,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:55:15,872 INFO L225 Difference]: With dead ends: 7818 [2020-10-13 08:55:15,872 INFO L226 Difference]: Without dead ends: 4069 [2020-10-13 08:55:15,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=253, Invalid=617, Unknown=0, NotChecked=0, Total=870 [2020-10-13 08:55:15,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4069 states. [2020-10-13 08:55:15,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4069 to 4069. [2020-10-13 08:55:15,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4069 states. [2020-10-13 08:55:15,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4069 states to 4069 states and 4484 transitions. [2020-10-13 08:55:15,952 INFO L78 Accepts]: Start accepts. Automaton has 4069 states and 4484 transitions. Word has length 807 [2020-10-13 08:55:15,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:55:15,953 INFO L479 AbstractCegarLoop]: Abstraction has 4069 states and 4484 transitions. [2020-10-13 08:55:15,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 08:55:15,953 INFO L276 IsEmpty]: Start isEmpty. Operand 4069 states and 4484 transitions. [2020-10-13 08:55:15,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2020-10-13 08:55:15,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:55:15,968 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:55:15,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 08:55:15,968 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:55:15,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:55:15,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1676371802, now seen corresponding path program 1 times [2020-10-13 08:55:15,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:55:15,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992803826] [2020-10-13 08:55:15,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:55:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:16,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:16,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:16,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:18,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:21,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:21,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 883 [2020-10-13 08:55:21,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:55:21,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 08:55:21,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 08:55:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-13 08:55:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-13 08:55:21,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:21,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:55:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:21,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:21,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:21,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:55:21,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:21,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:55:21,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:21,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:21,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:21,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:21,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:21,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:55:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:21,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:21,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:21,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:55:21,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:21,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:55:21,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:21,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:21,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:21,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:21,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:21,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:55:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:21,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:21,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:21,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:55:21,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:21,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 08:55:21,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:21,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:55:21,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:21,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 08:55:21,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:21,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 08:55:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:21,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:21,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:21,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:21,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 08:55:21,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:55:21,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-10-13 08:55:21,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:21,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 08:55:21,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:55:21,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-13 08:55:21,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:22,633 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2020-10-13 08:55:22,929 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2020-10-13 08:55:23,211 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2020-10-13 08:55:23,500 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2020-10-13 08:55:23,811 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2020-10-13 08:55:24,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2020-10-13 08:55:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:24,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:24,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:24,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:55:24,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:24,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 08:55:24,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:24,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:24,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:55:24,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:24,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:24,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-13 08:55:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:24,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:24,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:24,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:55:24,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:24,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:55:24,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:24,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:24,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 08:55:24,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:24,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:24,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 759 [2020-10-13 08:55:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:24,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:24,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:24,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:55:24,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:24,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:55:24,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:24,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:24,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 08:55:24,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:24,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1826 backedges. 302 proven. 434 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2020-10-13 08:55:26,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992803826] [2020-10-13 08:55:26,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:55:26,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 08:55:26,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344643679] [2020-10-13 08:55:26,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 08:55:26,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:55:26,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 08:55:26,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-13 08:55:26,957 INFO L87 Difference]: Start difference. First operand 4069 states and 4484 transitions. Second operand 14 states. [2020-10-13 08:55:28,260 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 69 [2020-10-13 08:55:28,492 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2020-10-13 08:55:29,279 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 117 [2020-10-13 08:55:29,805 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 83 [2020-10-13 08:55:30,397 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 84 [2020-10-13 08:55:30,757 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 87 [2020-10-13 08:55:31,273 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 102 [2020-10-13 08:55:31,695 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 59 [2020-10-13 08:55:31,995 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-10-13 08:55:33,123 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 55 [2020-10-13 08:55:33,372 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 60 [2020-10-13 08:55:33,875 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 63 [2020-10-13 08:55:34,364 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 59 [2020-10-13 08:55:34,640 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 63 [2020-10-13 08:55:35,035 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 66 [2020-10-13 08:55:35,830 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 100 [2020-10-13 08:55:36,207 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-10-13 08:55:36,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:55:36,439 INFO L93 Difference]: Finished difference Result 7950 states and 8778 transitions. [2020-10-13 08:55:36,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 08:55:36,441 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 863 [2020-10-13 08:55:36,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:55:36,454 INFO L225 Difference]: With dead ends: 7950 [2020-10-13 08:55:36,454 INFO L226 Difference]: Without dead ends: 4002 [2020-10-13 08:55:36,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 08:55:36,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4002 states. [2020-10-13 08:55:36,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4002 to 4002. [2020-10-13 08:55:36,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4002 states. [2020-10-13 08:55:36,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4002 states to 4002 states and 4410 transitions. [2020-10-13 08:55:36,538 INFO L78 Accepts]: Start accepts. Automaton has 4002 states and 4410 transitions. Word has length 863 [2020-10-13 08:55:36,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:55:36,539 INFO L479 AbstractCegarLoop]: Abstraction has 4002 states and 4410 transitions. [2020-10-13 08:55:36,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 08:55:36,539 INFO L276 IsEmpty]: Start isEmpty. Operand 4002 states and 4410 transitions. [2020-10-13 08:55:36,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 892 [2020-10-13 08:55:36,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:55:36,553 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:55:36,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 08:55:36,553 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:55:36,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:55:36,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1926094270, now seen corresponding path program 1 times [2020-10-13 08:55:36,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:55:36,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331882501] [2020-10-13 08:55:36,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:55:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:36,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:36,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:36,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:37,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:37,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:41,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:41,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 911 [2020-10-13 08:55:41,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:55:41,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 08:55:41,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:55:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-13 08:55:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-13 08:55:41,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:41,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:55:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:41,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:41,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:41,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:55:41,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:41,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:55:41,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:41,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:41,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:41,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:41,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:41,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:55:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:41,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:41,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:41,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:55:41,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:41,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 08:55:41,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:55:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 08:55:41,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:41,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:55:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:41,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:41,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:41,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 08:55:41,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:41,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 08:55:41,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:55:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:55:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-13 08:55:41,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:42,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-13 08:55:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:42,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:42,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:42,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 08:55:42,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:42,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 08:55:42,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:42,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:42,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-13 08:55:42,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:42,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:42,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-10-13 08:55:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:42,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:42,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:42,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:55:42,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:42,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 08:55:42,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:42,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:42,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:55:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:42,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:42,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-13 08:55:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:42,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:42,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:42,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:55:42,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:42,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 08:55:42,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:42,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:42,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 08:55:42,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:42,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:42,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 787 [2020-10-13 08:55:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:42,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:42,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:42,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:55:42,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:42,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:55:42,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 08:55:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:42,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1907 backedges. 183 proven. 484 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2020-10-13 08:55:42,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331882501] [2020-10-13 08:55:42,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:55:42,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:55:42,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168828450] [2020-10-13 08:55:42,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:55:42,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:55:42,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:55:42,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:55:42,920 INFO L87 Difference]: Start difference. First operand 4002 states and 4410 transitions. Second operand 7 states. [2020-10-13 08:55:44,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:55:44,313 INFO L93 Difference]: Finished difference Result 7816 states and 8630 transitions. [2020-10-13 08:55:44,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:55:44,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 891 [2020-10-13 08:55:44,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:55:44,320 INFO L225 Difference]: With dead ends: 7816 [2020-10-13 08:55:44,320 INFO L226 Difference]: Without dead ends: 4002 [2020-10-13 08:55:44,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:55:44,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4002 states. [2020-10-13 08:55:44,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4002 to 4002. [2020-10-13 08:55:44,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4002 states. [2020-10-13 08:55:44,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4002 states to 4002 states and 4406 transitions. [2020-10-13 08:55:44,395 INFO L78 Accepts]: Start accepts. Automaton has 4002 states and 4406 transitions. Word has length 891 [2020-10-13 08:55:44,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:55:44,396 INFO L479 AbstractCegarLoop]: Abstraction has 4002 states and 4406 transitions. [2020-10-13 08:55:44,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:55:44,396 INFO L276 IsEmpty]: Start isEmpty. Operand 4002 states and 4406 transitions. [2020-10-13 08:55:44,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2020-10-13 08:55:44,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:55:44,412 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:55:44,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 08:55:44,413 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:55:44,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:55:44,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1661516585, now seen corresponding path program 1 times [2020-10-13 08:55:44,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:55:44,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845655552] [2020-10-13 08:55:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:55:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:44,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:44,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:47,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:47,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 988 [2020-10-13 08:55:47,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:55:47,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2795 [2020-10-13 08:55:47,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:47,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 08:55:47,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-13 08:55:47,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 08:55:47,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:47,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:55:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:47,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:47,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:47,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:55:47,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:47,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:55:47,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:47,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:47,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:47,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:47,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:47,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:55:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:47,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:47,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:47,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:55:47,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:47,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:55:47,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:47,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:47,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:47,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:47,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:47,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:55:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:47,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:47,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:47,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:55:47,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:47,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:55:47,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:47,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:47,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:47,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:47,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:47,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 08:55:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:47,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:47,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:47,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:55:47,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:47,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:55:47,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:47,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:47,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:47,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:47,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:47,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-13 08:55:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:47,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:47,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:47,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 08:55:47,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:47,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 08:55:47,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:47,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:55:47,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:47,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-13 08:55:47,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:47,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-13 08:55:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:47,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:47,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:48,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:48,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:55:48,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:55:48,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-13 08:55:48,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:55:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:55:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:55:48,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:48,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-10-13 08:55:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:48,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:48,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:48,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:55:48,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:48,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 08:55:48,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:48,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:48,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 08:55:48,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:48,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:48,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 862 [2020-10-13 08:55:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:48,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:48,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:48,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:55:48,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:48,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:55:48,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:48,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:48,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 08:55:48,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:48,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:48,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2473 backedges. 600 proven. 270 refuted. 0 times theorem prover too weak. 1603 trivial. 0 not checked. [2020-10-13 08:55:48,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845655552] [2020-10-13 08:55:48,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:55:48,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:55:48,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165250013] [2020-10-13 08:55:48,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:55:48,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:55:48,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:55:48,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:55:48,719 INFO L87 Difference]: Start difference. First operand 4002 states and 4406 transitions. Second operand 8 states. [2020-10-13 08:55:50,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:55:50,415 INFO L93 Difference]: Finished difference Result 7822 states and 8630 transitions. [2020-10-13 08:55:50,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:55:50,416 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 966 [2020-10-13 08:55:50,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:55:50,422 INFO L225 Difference]: With dead ends: 7822 [2020-10-13 08:55:50,422 INFO L226 Difference]: Without dead ends: 4008 [2020-10-13 08:55:50,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:55:50,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4008 states. [2020-10-13 08:55:50,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4008 to 4002. [2020-10-13 08:55:50,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4002 states. [2020-10-13 08:55:50,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4002 states to 4002 states and 4400 transitions. [2020-10-13 08:55:50,491 INFO L78 Accepts]: Start accepts. Automaton has 4002 states and 4400 transitions. Word has length 966 [2020-10-13 08:55:50,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:55:50,492 INFO L479 AbstractCegarLoop]: Abstraction has 4002 states and 4400 transitions. [2020-10-13 08:55:50,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:55:50,492 INFO L276 IsEmpty]: Start isEmpty. Operand 4002 states and 4400 transitions. [2020-10-13 08:55:50,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1066 [2020-10-13 08:55:50,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:55:50,507 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:55:50,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 08:55:50,508 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:55:50,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:55:50,508 INFO L82 PathProgramCache]: Analyzing trace with hash 81865046, now seen corresponding path program 1 times [2020-10-13 08:55:50,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:55:50,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853740120] [2020-10-13 08:55:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:55:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:50,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:50,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:53,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:53,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1089 [2020-10-13 08:55:53,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:55:53,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2977 [2020-10-13 08:55:53,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 08:55:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-13 08:55:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 08:55:53,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:53,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:55:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:53,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:53,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:53,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:55:53,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:53,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:55:53,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:53,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:53,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:55:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:53,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:53,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:53,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:55:53,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:53,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:55:53,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:53,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:53,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:53,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:53,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:53,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:55:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:53,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:53,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:53,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:55:53,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:53,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 08:55:53,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:53,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:53,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:53,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:53,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:53,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 08:55:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:53,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:53,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:53,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:55:53,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:53,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:55:53,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:53,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:53,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:53,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:53,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:53,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-13 08:55:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:53,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:53,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:53,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:55:53,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:53,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:55:53,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:53,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:53,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:53,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:53,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:53,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-13 08:55:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:53,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:53,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:53,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 08:55:53,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:53,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 08:55:53,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:53,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:55:53,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:55:53,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-13 08:55:53,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:54,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-13 08:55:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:54,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:54,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:54,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:54,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:55:54,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:55:54,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-10-13 08:55:54,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:54,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:55:54,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:55:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:55:54,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:54,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 781 [2020-10-13 08:55:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:54,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:54,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:54,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:55:54,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:54,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 08:55:54,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:54,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:54,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 08:55:54,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:54,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:54,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 961 [2020-10-13 08:55:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:54,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:54,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:55:54,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:55:54,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:55:54,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:55:54,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:55:54,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:55:54,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 08:55:54,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:55:54,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:55:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3086 backedges. 719 proven. 270 refuted. 0 times theorem prover too weak. 2097 trivial. 0 not checked. [2020-10-13 08:55:55,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853740120] [2020-10-13 08:55:55,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:55:55,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:55:55,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224171426] [2020-10-13 08:55:55,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:55:55,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:55:55,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:55:55,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:55:55,220 INFO L87 Difference]: Start difference. First operand 4002 states and 4400 transitions. Second operand 8 states. [2020-10-13 08:55:56,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:55:56,938 INFO L93 Difference]: Finished difference Result 7822 states and 8618 transitions. [2020-10-13 08:55:56,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:55:56,940 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1065 [2020-10-13 08:55:56,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:55:56,954 INFO L225 Difference]: With dead ends: 7822 [2020-10-13 08:55:56,954 INFO L226 Difference]: Without dead ends: 4008 [2020-10-13 08:55:56,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:55:56,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4008 states. [2020-10-13 08:55:57,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4008 to 4002. [2020-10-13 08:55:57,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4002 states. [2020-10-13 08:55:57,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4002 states to 4002 states and 4386 transitions. [2020-10-13 08:55:57,038 INFO L78 Accepts]: Start accepts. Automaton has 4002 states and 4386 transitions. Word has length 1065 [2020-10-13 08:55:57,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:55:57,039 INFO L479 AbstractCegarLoop]: Abstraction has 4002 states and 4386 transitions. [2020-10-13 08:55:57,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:55:57,039 INFO L276 IsEmpty]: Start isEmpty. Operand 4002 states and 4386 transitions. [2020-10-13 08:55:57,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1140 [2020-10-13 08:55:57,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:55:57,059 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:55:57,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 08:55:57,059 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:55:57,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:55:57,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1320506350, now seen corresponding path program 1 times [2020-10-13 08:55:57,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:55:57,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203502448] [2020-10-13 08:55:57,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:55:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:55:57,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:55:57,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:00,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:00,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1163 [2020-10-13 08:56:00,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:56:00,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3280 [2020-10-13 08:56:00,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:00,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 08:56:00,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-13 08:56:00,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-13 08:56:00,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:00,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:56:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:00,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:00,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:00,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:56:00,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:00,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:56:00,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:00,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:00,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:00,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:00,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:00,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:56:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:00,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:00,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:00,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:56:00,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:00,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:56:00,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:00,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:00,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:56:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:00,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:00,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:00,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:56:00,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:00,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:56:00,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:00,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:00,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:00,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:00,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:00,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 08:56:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:00,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:00,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:00,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:56:00,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:00,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:56:00,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:00,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:00,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:00,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:00,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:56:00,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-13 08:56:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:00,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:00,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:00,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 08:56:00,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:00,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:56:00,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:00,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:00,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:00,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-13 08:56:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:00,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:00,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:01,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 08:56:01,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:01,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 08:56:01,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:01,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:56:01,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:01,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-13 08:56:01,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:01,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-13 08:56:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:01,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:01,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:01,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:01,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:56:01,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:56:01,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-13 08:56:01,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:01,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 08:56:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:56:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:56:01,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:01,640 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-13 08:56:01,775 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-10-13 08:56:01,913 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-13 08:56:02,069 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-10-13 08:56:02,222 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-13 08:56:02,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2020-10-13 08:56:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:02,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:02,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:02,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:56:02,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:02,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 08:56:02,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:02,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:02,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 08:56:02,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:02,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:02,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1035 [2020-10-13 08:56:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:02,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:02,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:02,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:56:02,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:02,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:56:02,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:02,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 08:56:02,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:02,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:04,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3419 backedges. 793 proven. 270 refuted. 0 times theorem prover too weak. 2356 trivial. 0 not checked. [2020-10-13 08:56:04,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203502448] [2020-10-13 08:56:04,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:56:04,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 08:56:04,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089862078] [2020-10-13 08:56:04,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 08:56:04,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:56:04,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 08:56:04,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:56:04,391 INFO L87 Difference]: Start difference. First operand 4002 states and 4386 transitions. Second operand 13 states. [2020-10-13 08:56:05,959 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-10-13 08:56:06,116 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-10-13 08:56:06,285 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-10-13 08:56:06,481 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-10-13 08:56:06,641 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-10-13 08:56:06,818 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2020-10-13 08:56:07,119 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2020-10-13 08:56:08,644 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-10-13 08:56:08,812 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-10-13 08:56:08,986 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-10-13 08:56:09,205 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-10-13 08:56:09,378 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2020-10-13 08:56:09,570 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 53 [2020-10-13 08:56:09,756 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-13 08:56:10,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:56:10,092 INFO L93 Difference]: Finished difference Result 7816 states and 8582 transitions. [2020-10-13 08:56:10,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 08:56:10,093 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1139 [2020-10-13 08:56:10,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:56:10,098 INFO L225 Difference]: With dead ends: 7816 [2020-10-13 08:56:10,098 INFO L226 Difference]: Without dead ends: 3980 [2020-10-13 08:56:10,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=255, Invalid=615, Unknown=0, NotChecked=0, Total=870 [2020-10-13 08:56:10,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3980 states. [2020-10-13 08:56:10,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3980 to 3980. [2020-10-13 08:56:10,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3980 states. [2020-10-13 08:56:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3980 states to 3980 states and 4361 transitions. [2020-10-13 08:56:10,164 INFO L78 Accepts]: Start accepts. Automaton has 3980 states and 4361 transitions. Word has length 1139 [2020-10-13 08:56:10,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:56:10,165 INFO L479 AbstractCegarLoop]: Abstraction has 3980 states and 4361 transitions. [2020-10-13 08:56:10,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 08:56:10,165 INFO L276 IsEmpty]: Start isEmpty. Operand 3980 states and 4361 transitions. [2020-10-13 08:56:10,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1142 [2020-10-13 08:56:10,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:56:10,180 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:56:10,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 08:56:10,181 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:56:10,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:56:10,181 INFO L82 PathProgramCache]: Analyzing trace with hash 452337406, now seen corresponding path program 1 times [2020-10-13 08:56:10,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:56:10,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314330006] [2020-10-13 08:56:10,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:56:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:10,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:11,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:14,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:15,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:15,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1167 [2020-10-13 08:56:15,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:56:15,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-13 08:56:15,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 08:56:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-13 08:56:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 306 [2020-10-13 08:56:15,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:15,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:56:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:15,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:15,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:15,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:56:15,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:15,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:56:15,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:15,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:15,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:15,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:15,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:56:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:15,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:15,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:15,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:56:15,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:15,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:56:15,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:15,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:15,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:15,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:15,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:15,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:56:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:15,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:15,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:15,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:56:15,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:15,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:56:15,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:15,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:15,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:15,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:15,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:15,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 08:56:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:15,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:15,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:15,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:56:15,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:15,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:56:15,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:15,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:15,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:15,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:15,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:15,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-13 08:56:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:15,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:15,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:15,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:56:15,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:15,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:56:15,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:15,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:15,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:15,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:15,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:15,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-13 08:56:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:15,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:15,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:15,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 08:56:15,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:15,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 08:56:15,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:15,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:15,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:15,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:15,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:15,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-13 08:56:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:15,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:15,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:15,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:56:15,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:15,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:56:15,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:15,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:56:15,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:15,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:56:15,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:15,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-13 08:56:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:15,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:15,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:15,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:56:15,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:15,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 08:56:15,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:15,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:56:15,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:56:15,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:56:15,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:16,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-13 08:56:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:16,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:16,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:16,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:16,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:56:16,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:56:16,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-13 08:56:16,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:16,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 08:56:16,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:56:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 08:56:16,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:16,746 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-10-13 08:56:16,910 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-10-13 08:56:17,091 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-10-13 08:56:17,289 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-10-13 08:56:17,485 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-13 08:56:17,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1037 [2020-10-13 08:56:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:17,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:17,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:17,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:56:17,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:17,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 08:56:17,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:17,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:17,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 08:56:17,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:17,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:19,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3704 backedges. 1524 proven. 297 refuted. 0 times theorem prover too weak. 1883 trivial. 0 not checked. [2020-10-13 08:56:19,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314330006] [2020-10-13 08:56:19,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:56:19,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 08:56:19,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355371832] [2020-10-13 08:56:19,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 08:56:19,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:56:19,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 08:56:19,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-13 08:56:19,960 INFO L87 Difference]: Start difference. First operand 3980 states and 4361 transitions. Second operand 16 states. [2020-10-13 08:56:20,831 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-10-13 08:56:21,028 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-10-13 08:56:21,354 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-13 08:56:21,607 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-10-13 08:56:21,828 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2020-10-13 08:56:22,271 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 74 [2020-10-13 08:56:22,688 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 85 [2020-10-13 08:56:23,325 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2020-10-13 08:56:23,751 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-10-13 08:56:23,915 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-10-13 08:56:24,146 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-10-13 08:56:24,351 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-10-13 08:56:24,708 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-13 08:56:25,131 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 83 [2020-10-13 08:56:26,292 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2020-10-13 08:56:26,520 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2020-10-13 08:56:26,893 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2020-10-13 08:56:27,184 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-10-13 08:56:27,584 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 63 [2020-10-13 08:56:27,997 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 66 [2020-10-13 08:56:28,605 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-13 08:56:28,905 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2020-10-13 08:56:29,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:56:29,405 INFO L93 Difference]: Finished difference Result 9248 states and 10180 transitions. [2020-10-13 08:56:29,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-13 08:56:29,407 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1141 [2020-10-13 08:56:29,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:56:29,415 INFO L225 Difference]: With dead ends: 9248 [2020-10-13 08:56:29,415 INFO L226 Difference]: Without dead ends: 5390 [2020-10-13 08:56:29,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=521, Invalid=1641, Unknown=0, NotChecked=0, Total=2162 [2020-10-13 08:56:29,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5390 states. [2020-10-13 08:56:29,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5390 to 5204. [2020-10-13 08:56:29,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5204 states. [2020-10-13 08:56:29,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5204 states to 5204 states and 5725 transitions. [2020-10-13 08:56:29,491 INFO L78 Accepts]: Start accepts. Automaton has 5204 states and 5725 transitions. Word has length 1141 [2020-10-13 08:56:29,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:56:29,492 INFO L479 AbstractCegarLoop]: Abstraction has 5204 states and 5725 transitions. [2020-10-13 08:56:29,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 08:56:29,492 INFO L276 IsEmpty]: Start isEmpty. Operand 5204 states and 5725 transitions. [2020-10-13 08:56:29,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1400 [2020-10-13 08:56:29,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:56:29,515 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:56:29,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 08:56:29,515 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:56:29,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:56:29,516 INFO L82 PathProgramCache]: Analyzing trace with hash -935413830, now seen corresponding path program 1 times [2020-10-13 08:56:29,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:56:29,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538507553] [2020-10-13 08:56:29,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:56:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:29,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:30,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:32,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:32,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1429 [2020-10-13 08:56:32,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:56:32,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2706 [2020-10-13 08:56:32,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:32,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:56:32,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1133 [2020-10-13 08:56:32,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-13 08:56:32,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:32,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:56:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:32,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:32,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:32,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:56:32,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:32,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:56:32,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:32,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:32,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:32,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:32,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:32,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:56:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:32,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:32,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:32,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:56:32,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:32,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:56:32,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:32,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:32,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:32,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:32,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:32,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:56:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:32,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:32,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:32,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:56:32,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:32,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:56:32,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:32,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:32,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:32,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:32,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:32,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 08:56:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:32,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:32,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:32,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:56:32,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:32,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:56:32,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:32,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:32,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-13 08:56:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:32,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:32,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:32,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:56:32,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:32,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 08:56:32,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:32,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:32,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:32,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:32,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:32,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-13 08:56:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:32,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:32,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:32,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 08:56:32,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:32,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 08:56:32,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:32,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:32,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:32,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:32,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:32,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-13 08:56:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:32,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:32,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:32,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:56:32,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:32,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:56:32,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:32,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:32,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:32,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:32,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:32,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-13 08:56:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:32,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:32,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:32,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:56:32,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:32,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 08:56:32,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:32,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:32,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:32,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:32,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:32,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-13 08:56:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:32,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:33,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:33,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:56:33,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:33,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:56:33,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:33,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:33,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:33,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:33,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:33,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-13 08:56:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:33,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:33,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:33,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 08:56:33,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:33,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 08:56:33,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:56:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-13 08:56:33,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:33,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-13 08:56:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:33,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:33,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:33,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:56:33,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:33,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 08:56:33,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:56:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:56:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 08:56:33,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:33,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1295 [2020-10-13 08:56:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:33,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:33,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:33,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:56:33,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:33,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:56:33,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:33,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:33,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 08:56:33,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:33,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:34,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5792 backedges. 1266 proven. 94 refuted. 0 times theorem prover too weak. 4432 trivial. 0 not checked. [2020-10-13 08:56:34,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538507553] [2020-10-13 08:56:34,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:56:34,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:56:34,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904004104] [2020-10-13 08:56:34,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:56:34,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:56:34,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:56:34,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:56:34,159 INFO L87 Difference]: Start difference. First operand 5204 states and 5725 transitions. Second operand 7 states. [2020-10-13 08:56:35,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:56:35,478 INFO L93 Difference]: Finished difference Result 11117 states and 12292 transitions. [2020-10-13 08:56:35,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:56:35,478 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1399 [2020-10-13 08:56:35,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:56:35,488 INFO L225 Difference]: With dead ends: 11117 [2020-10-13 08:56:35,488 INFO L226 Difference]: Without dead ends: 6101 [2020-10-13 08:56:35,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:56:35,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6101 states. [2020-10-13 08:56:35,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6101 to 6019. [2020-10-13 08:56:35,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6019 states. [2020-10-13 08:56:35,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6019 states to 6019 states and 6537 transitions. [2020-10-13 08:56:35,568 INFO L78 Accepts]: Start accepts. Automaton has 6019 states and 6537 transitions. Word has length 1399 [2020-10-13 08:56:35,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:56:35,569 INFO L479 AbstractCegarLoop]: Abstraction has 6019 states and 6537 transitions. [2020-10-13 08:56:35,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:56:35,569 INFO L276 IsEmpty]: Start isEmpty. Operand 6019 states and 6537 transitions. [2020-10-13 08:56:35,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1402 [2020-10-13 08:56:35,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:56:35,591 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:56:35,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 08:56:35,592 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:56:35,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:56:35,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1875376918, now seen corresponding path program 1 times [2020-10-13 08:56:35,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:56:35,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927003694] [2020-10-13 08:56:35,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:56:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:35,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:36,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:39,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:39,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1431 [2020-10-13 08:56:39,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:56:39,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3557 [2020-10-13 08:56:39,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:39,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:56:39,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1317 [2020-10-13 08:56:39,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:56:39,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:39,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:56:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:39,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:39,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:39,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:56:39,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:39,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:56:39,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:39,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:39,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:56:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:39,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:39,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:39,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:56:39,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:39,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:56:39,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:39,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:39,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:39,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:39,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:39,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:56:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:39,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:39,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:39,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:56:39,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:39,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:56:39,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:39,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:39,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:39,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:39,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:39,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 08:56:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:39,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:39,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:39,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:56:39,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:39,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:56:39,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:39,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:39,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:39,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:39,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:39,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-13 08:56:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:39,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:39,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:39,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:56:39,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:39,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 08:56:39,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:39,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:39,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:39,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:39,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:39,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-13 08:56:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:39,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:39,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:39,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 08:56:39,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:39,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:56:39,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:39,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:39,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:39,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:39,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:39,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-13 08:56:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:39,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:39,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:39,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:56:39,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:39,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:56:39,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:39,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:39,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:39,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:39,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:39,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-13 08:56:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:39,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:39,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:39,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:56:39,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:39,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:56:39,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:39,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:39,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:39,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:39,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:39,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-13 08:56:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:39,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:39,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:39,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:56:39,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:39,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 08:56:39,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:39,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:39,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-13 08:56:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:39,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:40,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:40,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 08:56:40,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:40,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 08:56:40,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:40,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:40,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:40,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:40,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:40,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-13 08:56:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:40,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:40,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:40,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 08:56:40,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:40,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 08:56:40,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:40,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:56:40,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:40,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-13 08:56:40,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:40,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-13 08:56:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:40,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:40,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:40,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:56:40,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:40,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 08:56:40,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:40,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:56:40,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:56:40,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:56:40,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5792 backedges. 1042 proven. 2 refuted. 0 times theorem prover too weak. 4748 trivial. 0 not checked. [2020-10-13 08:56:41,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927003694] [2020-10-13 08:56:41,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:56:41,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:56:41,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020835062] [2020-10-13 08:56:41,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:56:41,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:56:41,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:56:41,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:56:41,309 INFO L87 Difference]: Start difference. First operand 6019 states and 6537 transitions. Second operand 7 states. [2020-10-13 08:56:42,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:56:42,652 INFO L93 Difference]: Finished difference Result 12402 states and 13557 transitions. [2020-10-13 08:56:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:56:42,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1401 [2020-10-13 08:56:42,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:56:42,664 INFO L225 Difference]: With dead ends: 12402 [2020-10-13 08:56:42,664 INFO L226 Difference]: Without dead ends: 6571 [2020-10-13 08:56:42,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:56:42,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6571 states. [2020-10-13 08:56:42,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6571 to 6385. [2020-10-13 08:56:42,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6385 states. [2020-10-13 08:56:42,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6385 states to 6385 states and 6915 transitions. [2020-10-13 08:56:42,765 INFO L78 Accepts]: Start accepts. Automaton has 6385 states and 6915 transitions. Word has length 1401 [2020-10-13 08:56:42,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:56:42,767 INFO L479 AbstractCegarLoop]: Abstraction has 6385 states and 6915 transitions. [2020-10-13 08:56:42,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:56:42,767 INFO L276 IsEmpty]: Start isEmpty. Operand 6385 states and 6915 transitions. [2020-10-13 08:56:42,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1664 [2020-10-13 08:56:42,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:56:42,791 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:56:42,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 08:56:42,791 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:56:42,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:56:42,792 INFO L82 PathProgramCache]: Analyzing trace with hash 30693350, now seen corresponding path program 1 times [2020-10-13 08:56:42,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:56:42,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473384371] [2020-10-13 08:56:42,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:56:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:43,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:43,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:45,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:46,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:47,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:48,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:48,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1697 [2020-10-13 08:56:48,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:56:48,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 08:56:48,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:56:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1583 [2020-10-13 08:56:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 08:56:48,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:48,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:56:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:48,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:48,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:48,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:56:48,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:48,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:56:48,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:48,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:48,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:48,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:48,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:48,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:56:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:48,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:48,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:48,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:56:48,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:48,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:56:48,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:48,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:48,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:48,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:48,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:48,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:56:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:48,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:48,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:48,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:56:48,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:48,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:56:48,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:48,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:48,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:48,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:48,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:48,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 08:56:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:48,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:48,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:48,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:56:48,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:48,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:56:48,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:48,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:48,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:48,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:48,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:48,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-13 08:56:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:48,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:48,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:48,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:56:48,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:48,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:56:48,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:48,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:48,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:48,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:48,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:48,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-13 08:56:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:48,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:48,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:48,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 08:56:48,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:48,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:56:48,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:48,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:48,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-13 08:56:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:48,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:48,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:48,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:56:48,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:48,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:56:48,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:48,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:48,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:48,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:48,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:48,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-13 08:56:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:48,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:48,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:48,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:56:48,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:48,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:56:48,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:48,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:48,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:48,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:48,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:48,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-13 08:56:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:48,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:48,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:48,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:56:48,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:48,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 08:56:48,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:48,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:48,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-13 08:56:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:48,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:48,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:48,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 08:56:48,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:48,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 08:56:48,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:48,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:48,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:48,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:48,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:48,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-13 08:56:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:48,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:48,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:48,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 08:56:48,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:48,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:56:48,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:48,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:48,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-13 08:56:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:48,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:48,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:48,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 08:56:48,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:48,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 08:56:48,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:56:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:56:48,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:48,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1408 [2020-10-13 08:56:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:48,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:48,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:48,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 08:56:48,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:56:48,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 08:56:48,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:56:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:56:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-13 08:56:48,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:48,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1559 [2020-10-13 08:56:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:48,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:48,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:48,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:56:48,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:56:48,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:56:48,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-13 08:56:48,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:56:48,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:56:48,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:56:48,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:56:48,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:56:50,560 INFO L134 CoverageAnalysis]: Checked inductivity of 8359 backedges. 1256 proven. 2 refuted. 0 times theorem prover too weak. 7101 trivial. 0 not checked. [2020-10-13 08:56:50,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473384371] [2020-10-13 08:56:50,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:56:50,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:56:50,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930851630] [2020-10-13 08:56:50,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:56:50,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:56:50,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:56:50,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:56:50,562 INFO L87 Difference]: Start difference. First operand 6385 states and 6915 transitions. Second operand 7 states. [2020-10-13 08:56:51,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:56:51,660 INFO L93 Difference]: Finished difference Result 12415 states and 13444 transitions. [2020-10-13 08:56:51,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 08:56:51,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1663 [2020-10-13 08:56:51,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:56:51,672 INFO L225 Difference]: With dead ends: 12415 [2020-10-13 08:56:51,672 INFO L226 Difference]: Without dead ends: 6208 [2020-10-13 08:56:51,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:56:51,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6208 states. [2020-10-13 08:56:51,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6208 to 6201. [2020-10-13 08:56:51,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6201 states. [2020-10-13 08:56:51,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6201 states to 6201 states and 6661 transitions. [2020-10-13 08:56:51,761 INFO L78 Accepts]: Start accepts. Automaton has 6201 states and 6661 transitions. Word has length 1663 [2020-10-13 08:56:51,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:56:51,762 INFO L479 AbstractCegarLoop]: Abstraction has 6201 states and 6661 transitions. [2020-10-13 08:56:51,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:56:51,762 INFO L276 IsEmpty]: Start isEmpty. Operand 6201 states and 6661 transitions. [2020-10-13 08:56:51,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1682 [2020-10-13 08:56:51,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:56:51,786 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:56:51,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 08:56:51,787 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:56:51,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:56:51,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1399827038, now seen corresponding path program 1 times [2020-10-13 08:56:51,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:56:51,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058700132] [2020-10-13 08:56:51,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:56:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:56:52,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:56:53,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking...