/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/Problem16_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:17:44,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:17:44,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:17:44,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:17:44,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:17:44,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:17:44,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:17:44,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:17:44,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:17:44,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:17:44,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:17:44,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:17:44,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:17:44,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:17:44,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:17:44,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:17:44,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:17:44,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:17:44,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:17:44,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:17:44,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:17:44,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:17:44,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:17:44,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:17:44,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:17:44,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:17:44,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:17:44,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:17:44,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:17:44,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:17:44,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:17:44,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:17:44,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:17:44,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:17:44,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:17:44,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:17:44,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:17:44,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:17:44,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:17:44,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:17:44,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:17:44,785 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 09:17:44,807 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:17:44,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:17:44,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:17:44,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:17:44,809 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:17:44,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:17:44,810 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:17:44,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:17:44,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:17:44,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:17:44,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:17:44,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:17:44,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:17:44,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:17:44,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:17:44,812 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:17:44,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:17:44,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:17:44,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:17:44,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:17:44,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:17:44,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:17:44,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:17:44,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:17:44,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:17:44,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:17:44,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:17:44,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:17:44,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:17:44,815 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 09:17:45,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:17:45,124 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:17:45,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:17:45,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:17:45,129 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:17:45,130 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label22.c [2020-10-13 09:17:45,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71432935b/4721a808daf34e14b191d527896522e0/FLAGddefbf9d3 [2020-10-13 09:17:45,826 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:17:45,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label22.c [2020-10-13 09:17:45,851 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71432935b/4721a808daf34e14b191d527896522e0/FLAGddefbf9d3 [2020-10-13 09:17:45,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71432935b/4721a808daf34e14b191d527896522e0 [2020-10-13 09:17:46,009 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:17:46,011 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:17:46,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:17:46,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:17:46,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:17:46,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:17:46" (1/1) ... [2020-10-13 09:17:46,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:46, skipping insertion in model container [2020-10-13 09:17:46,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:17:46" (1/1) ... [2020-10-13 09:17:46,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:17:46,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:17:46,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:17:46,947 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:17:47,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:17:47,299 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:17:47,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:47 WrapperNode [2020-10-13 09:17:47,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:17:47,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:17:47,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:17:47,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:17:47,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:47" (1/1) ... [2020-10-13 09:17:47,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:47" (1/1) ... [2020-10-13 09:17:47,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:47" (1/1) ... [2020-10-13 09:17:47,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:47" (1/1) ... [2020-10-13 09:17:47,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:47" (1/1) ... [2020-10-13 09:17:47,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:47" (1/1) ... [2020-10-13 09:17:47,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:47" (1/1) ... [2020-10-13 09:17:47,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:17:47,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:17:47,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:17:47,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:17:47,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:47" (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 09:17:47,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:17:47,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:17:47,553 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:17:47,553 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:17:47,553 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:17:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:17:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:17:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:17:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:17:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:17:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:17:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:17:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:17:49,550 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:17:49,550 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:17:49,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:17:49 BoogieIcfgContainer [2020-10-13 09:17:49,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:17:49,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:17:49,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:17:49,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:17:49,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:17:46" (1/3) ... [2020-10-13 09:17:49,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c68b5e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:17:49, skipping insertion in model container [2020-10-13 09:17:49,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:47" (2/3) ... [2020-10-13 09:17:49,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c68b5e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:17:49, skipping insertion in model container [2020-10-13 09:17:49,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:17:49" (3/3) ... [2020-10-13 09:17:49,566 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label22.c [2020-10-13 09:17:49,576 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:17:49,584 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:17:49,598 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:17:49,624 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:17:49,624 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:17:49,625 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:17:49,625 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:17:49,625 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:17:49,625 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:17:49,625 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:17:49,625 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:17:49,651 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-13 09:17:49,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 09:17:49,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:49,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:17:49,659 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:49,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:49,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1496635070, now seen corresponding path program 1 times [2020-10-13 09:17:49,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:49,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775649609] [2020-10-13 09:17:49,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:49,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:50,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:50,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 09:17:50,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:50,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-13 09:17:50,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:50,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:17:50,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:17:50,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:17:50,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:17:50,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:50,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:50,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:50,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:50,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:17:50,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:50,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:50,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:50,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:17:50,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:50,193 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 09:17:50,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775649609] [2020-10-13 09:17:50,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:17:50,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:17:50,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314976860] [2020-10-13 09:17:50,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:17:50,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:50,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:17:50,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:17:50,222 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 4 states. [2020-10-13 09:17:53,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:53,361 INFO L93 Difference]: Finished difference Result 1169 states and 2165 transitions. [2020-10-13 09:17:53,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:17:53,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-13 09:17:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:53,397 INFO L225 Difference]: With dead ends: 1169 [2020-10-13 09:17:53,398 INFO L226 Difference]: Without dead ends: 696 [2020-10-13 09:17:53,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:17:53,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-13 09:17:53,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 689. [2020-10-13 09:17:53,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-10-13 09:17:53,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1077 transitions. [2020-10-13 09:17:53,504 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1077 transitions. Word has length 19 [2020-10-13 09:17:53,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:53,505 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 1077 transitions. [2020-10-13 09:17:53,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:17:53,505 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1077 transitions. [2020-10-13 09:17:53,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 09:17:53,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:53,511 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:17:53,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:17:53,511 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:53,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:53,512 INFO L82 PathProgramCache]: Analyzing trace with hash -519442725, now seen corresponding path program 1 times [2020-10-13 09:17:53,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:53,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764873990] [2020-10-13 09:17:53,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:53,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:53,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:54,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:54,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 09:17:54,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:17:54,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 718 [2020-10-13 09:17:54,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:54,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:54,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 09:17:54,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 09:17:54,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:17:54,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:54,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:54,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:54,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:54,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:54,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:17:54,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:54,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:17:54,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:54,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:54,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:54,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:17:54,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:54,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 09:17:54,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:54,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:54,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:54,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:17:54,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:17:54,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764873990] [2020-10-13 09:17:54,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:54,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:17:54,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885799918] [2020-10-13 09:17:54,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:17:54,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:54,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:17:54,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:17:54,487 INFO L87 Difference]: Start difference. First operand 689 states and 1077 transitions. Second operand 5 states. [2020-10-13 09:17:57,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:57,698 INFO L93 Difference]: Finished difference Result 1721 states and 2777 transitions. [2020-10-13 09:17:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:17:57,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 09:17:57,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:57,707 INFO L225 Difference]: With dead ends: 1721 [2020-10-13 09:17:57,708 INFO L226 Difference]: Without dead ends: 1038 [2020-10-13 09:17:57,710 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 09:17:57,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-10-13 09:17:57,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1034. [2020-10-13 09:17:57,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2020-10-13 09:17:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1496 transitions. [2020-10-13 09:17:57,768 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1496 transitions. Word has length 94 [2020-10-13 09:17:57,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:57,769 INFO L479 AbstractCegarLoop]: Abstraction has 1034 states and 1496 transitions. [2020-10-13 09:17:57,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:17:57,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1496 transitions. [2020-10-13 09:17:57,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-13 09:17:57,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:57,787 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:17:57,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:17:57,788 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:57,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:57,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1674996149, now seen corresponding path program 1 times [2020-10-13 09:17:57,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:57,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902062759] [2020-10-13 09:17:57,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:57,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:57,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:58,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:59,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:00,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:01,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:01,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:18:01,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:18:01,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3877 [2020-10-13 09:18:01,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:01,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:01,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 197 [2020-10-13 09:18:01,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 09:18:01,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:01,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:01,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:01,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:01,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:01,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:01,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:18:01,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:01,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:01,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:01,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:01,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:01,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:18:01,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:01,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:18:01,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:01,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:01,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:01,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:01,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:01,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 09:18:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:01,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:01,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:01,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:01,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:01,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:18:01,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:01,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:01,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:01,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:18:01,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 09:18:02,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902062759] [2020-10-13 09:18:02,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:02,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:18:02,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057765497] [2020-10-13 09:18:02,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:18:02,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:02,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:18:02,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:18:02,033 INFO L87 Difference]: Start difference. First operand 1034 states and 1496 transitions. Second operand 5 states. [2020-10-13 09:18:07,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:07,893 INFO L93 Difference]: Finished difference Result 2750 states and 4037 transitions. [2020-10-13 09:18:07,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:18:07,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-13 09:18:07,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:07,914 INFO L225 Difference]: With dead ends: 2750 [2020-10-13 09:18:07,914 INFO L226 Difference]: Without dead ends: 1722 [2020-10-13 09:18:07,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 09:18:07,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2020-10-13 09:18:07,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1718. [2020-10-13 09:18:07,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1718 states. [2020-10-13 09:18:08,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2413 transitions. [2020-10-13 09:18:08,011 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2413 transitions. Word has length 204 [2020-10-13 09:18:08,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:08,017 INFO L479 AbstractCegarLoop]: Abstraction has 1718 states and 2413 transitions. [2020-10-13 09:18:08,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:18:08,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2413 transitions. [2020-10-13 09:18:08,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-13 09:18:08,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:08,030 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:18:08,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:18:08,031 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:08,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:08,031 INFO L82 PathProgramCache]: Analyzing trace with hash 446997455, now seen corresponding path program 1 times [2020-10-13 09:18:08,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:08,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426919688] [2020-10-13 09:18:08,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:08,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:08,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:08,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:09,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:09,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:10,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:13,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:13,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-13 09:18:13,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:18:13,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 09:18:13,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:13,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:13,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:18:13,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 09:18:13,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:13,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:13,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:13,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:13,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:13,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:13,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:18:13,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:13,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:13,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:13,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:13,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:18:13,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:13,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:13,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:13,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:18:13,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:13,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:18:13,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:13,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:13,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:13,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:13,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:13,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 09:18:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:13,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:13,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:13,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:13,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:13,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:18:13,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:13,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:13,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:13,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:13,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:18:13,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-13 09:18:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:13,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:13,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:13,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:18:13,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:13,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:18:13,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:13,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:13,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:13,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:18:13,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:13,463 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-13 09:18:13,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426919688] [2020-10-13 09:18:13,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:13,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:18:13,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963305541] [2020-10-13 09:18:13,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:18:13,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:13,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:18:13,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:18:13,468 INFO L87 Difference]: Start difference. First operand 1718 states and 2413 transitions. Second operand 5 states. [2020-10-13 09:18:17,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:17,483 INFO L93 Difference]: Finished difference Result 5135 states and 7285 transitions. [2020-10-13 09:18:17,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:18:17,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 276 [2020-10-13 09:18:17,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:17,506 INFO L225 Difference]: With dead ends: 5135 [2020-10-13 09:18:17,506 INFO L226 Difference]: Without dead ends: 3423 [2020-10-13 09:18:17,511 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 09:18:17,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3423 states. [2020-10-13 09:18:17,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3423 to 3082. [2020-10-13 09:18:17,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3082 states. [2020-10-13 09:18:17,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 3964 transitions. [2020-10-13 09:18:17,606 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 3964 transitions. Word has length 276 [2020-10-13 09:18:17,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:17,607 INFO L479 AbstractCegarLoop]: Abstraction has 3082 states and 3964 transitions. [2020-10-13 09:18:17,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:18:17,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 3964 transitions. [2020-10-13 09:18:17,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-13 09:18:17,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:17,613 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 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 09:18:17,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:18:17,613 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:17,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:17,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1471625911, now seen corresponding path program 1 times [2020-10-13 09:18:17,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:17,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759131873] [2020-10-13 09:18:17,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:17,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:17,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:17,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:18,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:19,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:19,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:19,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:22,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:22,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 09:18:22,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:18:22,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 09:18:22,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:22,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:22,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 291 [2020-10-13 09:18:22,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 09:18:22,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:22,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:22,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:22,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:22,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:22,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:22,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:18:22,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:22,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:22,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:22,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:22,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:22,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:22,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:22,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:22,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:18:22,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:22,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:18:22,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:22,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:22,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:22,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:22,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:22,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 09:18:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:22,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:22,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:22,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:22,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:22,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:18:22,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:22,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:22,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:22,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:22,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-13 09:18:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:22,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:22,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:22,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:18:22,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:22,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 09:18:22,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:22,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:22,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:22,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 09:18:22,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:18:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2020-10-13 09:18:23,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759131873] [2020-10-13 09:18:23,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:23,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:18:23,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904257711] [2020-10-13 09:18:23,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:18:23,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:23,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:18:23,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:18:23,043 INFO L87 Difference]: Start difference. First operand 3082 states and 3964 transitions. Second operand 5 states. [2020-10-13 09:18:27,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:27,224 INFO L93 Difference]: Finished difference Result 7188 states and 9509 transitions. [2020-10-13 09:18:27,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:18:27,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 296 [2020-10-13 09:18:27,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:27,244 INFO L225 Difference]: With dead ends: 7188 [2020-10-13 09:18:27,244 INFO L226 Difference]: Without dead ends: 4112 [2020-10-13 09:18:27,251 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 09:18:27,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4112 states. [2020-10-13 09:18:27,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4112 to 3432. [2020-10-13 09:18:27,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3432 states. [2020-10-13 09:18:27,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3432 states to 3432 states and 4311 transitions. [2020-10-13 09:18:27,338 INFO L78 Accepts]: Start accepts. Automaton has 3432 states and 4311 transitions. Word has length 296 [2020-10-13 09:18:27,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:27,339 INFO L479 AbstractCegarLoop]: Abstraction has 3432 states and 4311 transitions. [2020-10-13 09:18:27,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:18:27,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3432 states and 4311 transitions. [2020-10-13 09:18:27,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-13 09:18:27,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:27,346 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:18:27,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:18:27,347 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:27,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:27,347 INFO L82 PathProgramCache]: Analyzing trace with hash 979436658, now seen corresponding path program 1 times [2020-10-13 09:18:27,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:27,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306399501] [2020-10-13 09:18:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:27,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:27,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:27,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:28,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:28,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:28,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:29,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:29,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:32,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:32,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-13 09:18:32,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 09:18:32,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 09:18:32,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:32,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:32,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 306 [2020-10-13 09:18:32,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 09:18:32,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:32,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:32,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:32,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:32,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:32,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:32,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:18:32,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:32,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:32,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:32,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:32,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:32,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:32,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:32,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:32,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:18:32,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:32,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:18:32,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:32,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:32,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 09:18:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:32,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:32,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:32,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:32,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:32,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:18:32,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:32,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:32,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-13 09:18:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:32,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:32,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:32,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:18:32,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:32,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 09:18:32,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:32,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:32,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:32,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 09:18:32,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:32,903 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2020-10-13 09:18:32,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306399501] [2020-10-13 09:18:32,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:32,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:18:32,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610514356] [2020-10-13 09:18:32,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:18:32,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:32,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:18:32,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:18:32,906 INFO L87 Difference]: Start difference. First operand 3432 states and 4311 transitions. Second operand 5 states. [2020-10-13 09:18:35,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:35,432 INFO L93 Difference]: Finished difference Result 6876 states and 8657 transitions. [2020-10-13 09:18:35,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:18:35,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-13 09:18:35,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:35,454 INFO L225 Difference]: With dead ends: 6876 [2020-10-13 09:18:35,454 INFO L226 Difference]: Without dead ends: 3436 [2020-10-13 09:18:35,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 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 09:18:35,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2020-10-13 09:18:35,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 3432. [2020-10-13 09:18:35,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3432 states. [2020-10-13 09:18:35,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3432 states to 3432 states and 4308 transitions. [2020-10-13 09:18:35,541 INFO L78 Accepts]: Start accepts. Automaton has 3432 states and 4308 transitions. Word has length 311 [2020-10-13 09:18:35,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:35,542 INFO L479 AbstractCegarLoop]: Abstraction has 3432 states and 4308 transitions. [2020-10-13 09:18:35,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:18:35,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3432 states and 4308 transitions. [2020-10-13 09:18:35,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-13 09:18:35,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:35,550 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:18:35,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:18:35,550 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:35,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:35,551 INFO L82 PathProgramCache]: Analyzing trace with hash -461342473, now seen corresponding path program 1 times [2020-10-13 09:18:35,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:35,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966013718] [2020-10-13 09:18:35,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:35,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:35,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:35,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:36,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:36,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:36,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:39,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:40,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:40,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-13 09:18:40,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:18:40,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 09:18:40,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:40,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:40,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-13 09:18:40,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 09:18:40,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:40,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:40,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:40,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:40,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:40,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:40,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:18:40,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:40,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:40,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:40,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:40,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:40,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:18:40,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:40,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:18:40,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:40,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:40,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 09:18:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:40,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:40,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:40,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:40,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:40,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:18:40,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:40,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:40,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:40,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:40,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:40,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-13 09:18:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:40,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:40,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:40,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 09:18:40,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:40,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:18:40,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:40,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:40,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:40,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 09:18:40,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:40,821 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2020-10-13 09:18:40,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966013718] [2020-10-13 09:18:40,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:40,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:18:40,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751842595] [2020-10-13 09:18:40,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:18:40,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:40,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:18:40,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:18:40,823 INFO L87 Difference]: Start difference. First operand 3432 states and 4308 transitions. Second operand 5 states. [2020-10-13 09:18:46,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:46,881 INFO L93 Difference]: Finished difference Result 10271 states and 13074 transitions. [2020-10-13 09:18:46,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:18:46,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-10-13 09:18:46,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:46,911 INFO L225 Difference]: With dead ends: 10271 [2020-10-13 09:18:46,912 INFO L226 Difference]: Without dead ends: 6845 [2020-10-13 09:18:46,923 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 09:18:46,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6845 states. [2020-10-13 09:18:47,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6845 to 6504. [2020-10-13 09:18:47,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6504 states. [2020-10-13 09:18:47,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6504 states to 6504 states and 8081 transitions. [2020-10-13 09:18:47,066 INFO L78 Accepts]: Start accepts. Automaton has 6504 states and 8081 transitions. Word has length 328 [2020-10-13 09:18:47,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:47,067 INFO L479 AbstractCegarLoop]: Abstraction has 6504 states and 8081 transitions. [2020-10-13 09:18:47,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:18:47,067 INFO L276 IsEmpty]: Start isEmpty. Operand 6504 states and 8081 transitions. [2020-10-13 09:18:47,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2020-10-13 09:18:47,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:47,079 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:47,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:18:47,079 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:47,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:47,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1582451662, now seen corresponding path program 1 times [2020-10-13 09:18:47,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:47,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353462024] [2020-10-13 09:18:47,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:47,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:47,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:47,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:47,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:48,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:48,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:50,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:52,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:52,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-10-13 09:18:52,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:18:52,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 09:18:52,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:52,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:52,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-13 09:18:52,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 09:18:52,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:52,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:52,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:52,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:52,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:52,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:52,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:18:52,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:52,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:52,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:52,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:52,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:52,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:52,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:52,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:52,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:18:52,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:52,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:18:52,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:52,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:52,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:52,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:52,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:52,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 09:18:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:52,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:52,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:52,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:52,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:52,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:18:52,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:52,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:52,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:52,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:52,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:18:52,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-13 09:18:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:52,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:52,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:52,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 09:18:52,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:52,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:18:52,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-13 09:18:52,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:52,483 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2020-10-13 09:18:52,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353462024] [2020-10-13 09:18:52,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:52,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:18:52,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986927737] [2020-10-13 09:18:52,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:18:52,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:52,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:18:52,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:18:52,485 INFO L87 Difference]: Start difference. First operand 6504 states and 8081 transitions. Second operand 6 states. [2020-10-13 09:18:58,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:58,502 INFO L93 Difference]: Finished difference Result 19111 states and 24815 transitions. [2020-10-13 09:18:58,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:18:58,503 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 381 [2020-10-13 09:18:58,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:58,560 INFO L225 Difference]: With dead ends: 19111 [2020-10-13 09:18:58,560 INFO L226 Difference]: Without dead ends: 12613 [2020-10-13 09:18:58,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:18:58,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12613 states. [2020-10-13 09:18:58,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12613 to 11933. [2020-10-13 09:18:58,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11933 states. [2020-10-13 09:18:58,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11933 states to 11933 states and 14909 transitions. [2020-10-13 09:18:58,813 INFO L78 Accepts]: Start accepts. Automaton has 11933 states and 14909 transitions. Word has length 381 [2020-10-13 09:18:58,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:58,814 INFO L479 AbstractCegarLoop]: Abstraction has 11933 states and 14909 transitions. [2020-10-13 09:18:58,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:18:58,814 INFO L276 IsEmpty]: Start isEmpty. Operand 11933 states and 14909 transitions. [2020-10-13 09:18:58,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2020-10-13 09:18:58,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:58,848 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:58,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:18:58,849 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:58,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:58,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1311935386, now seen corresponding path program 1 times [2020-10-13 09:18:58,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:58,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271659149] [2020-10-13 09:18:58,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:58,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:58,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:59,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:59,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:59,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:03,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:03,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 558 [2020-10-13 09:19:03,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:19:03,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 09:19:03,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:03,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:03,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 09:19:03,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:19:03,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:03,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:03,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:03,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:03,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:03,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:03,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:03,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:03,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:03,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:03,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:03,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:04,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:04,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:04,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:19:04,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:04,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:19:04,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:04,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:04,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:04,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:19:04,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:04,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 09:19:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:04,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:04,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:04,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:04,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:04,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:19:04,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-13 09:19:04,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:04,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:04,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:19:04,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:04,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-13 09:19:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:04,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:04,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:04,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 09:19:04,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:04,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-13 09:19:04,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:04,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:04,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-13 09:19:04,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:04,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:04,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:19:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:04,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:04,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:04,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 09:19:04,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:04,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:19:04,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:04,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:04,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:04,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:04,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 116 proven. 109 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-13 09:19:05,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271659149] [2020-10-13 09:19:05,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:05,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:05,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051195979] [2020-10-13 09:19:05,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:05,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:05,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:05,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:05,009 INFO L87 Difference]: Start difference. First operand 11933 states and 14909 transitions. Second operand 7 states. [2020-10-13 09:19:10,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:10,235 INFO L93 Difference]: Finished difference Result 30185 states and 38094 transitions. [2020-10-13 09:19:10,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:19:10,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 542 [2020-10-13 09:19:10,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:10,299 INFO L225 Difference]: With dead ends: 30185 [2020-10-13 09:19:10,300 INFO L226 Difference]: Without dead ends: 18181 [2020-10-13 09:19:10,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 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 09:19:10,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18181 states. [2020-10-13 09:19:10,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18181 to 17828. [2020-10-13 09:19:10,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17828 states. [2020-10-13 09:19:10,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17828 states to 17828 states and 22403 transitions. [2020-10-13 09:19:10,773 INFO L78 Accepts]: Start accepts. Automaton has 17828 states and 22403 transitions. Word has length 542 [2020-10-13 09:19:10,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:10,774 INFO L479 AbstractCegarLoop]: Abstraction has 17828 states and 22403 transitions. [2020-10-13 09:19:10,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:10,774 INFO L276 IsEmpty]: Start isEmpty. Operand 17828 states and 22403 transitions. [2020-10-13 09:19:10,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2020-10-13 09:19:10,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:10,824 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:10,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:19:10,825 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:10,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:10,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1780950618, now seen corresponding path program 1 times [2020-10-13 09:19:10,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:10,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016831547] [2020-10-13 09:19:10,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:10,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:10,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:11,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:12,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:15,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:15,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 568 [2020-10-13 09:19:15,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:19:15,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 09:19:15,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:15,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:15,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 09:19:15,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:19:15,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:15,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:15,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:15,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:15,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:15,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:15,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:15,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:15,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:15,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:15,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:15,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:15,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:16,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:16,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:16,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 09:19:16,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:16,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:19:16,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:16,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:19:16,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:16,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 09:19:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:16,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:16,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:16,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:16,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:16,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:19:16,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-13 09:19:16,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:19:16,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:16,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-13 09:19:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:16,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:16,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:16,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 09:19:16,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:16,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 09:19:16,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-13 09:19:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:16,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:16,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:19:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:16,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:16,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:16,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 09:19:16,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:16,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:19:16,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:16,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:16,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:16,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:16,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:17,366 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 126 proven. 109 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-13 09:19:17,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016831547] [2020-10-13 09:19:17,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:17,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:17,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964043481] [2020-10-13 09:19:17,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:17,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:17,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:17,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:17,369 INFO L87 Difference]: Start difference. First operand 17828 states and 22403 transitions. Second operand 7 states. [2020-10-13 09:19:21,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:21,583 INFO L93 Difference]: Finished difference Result 35786 states and 45171 transitions. [2020-10-13 09:19:21,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:19:21,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 552 [2020-10-13 09:19:21,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:21,648 INFO L225 Difference]: With dead ends: 35786 [2020-10-13 09:19:21,649 INFO L226 Difference]: Without dead ends: 17909 [2020-10-13 09:19:21,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:19:21,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17909 states. [2020-10-13 09:19:22,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17909 to 17847. [2020-10-13 09:19:22,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17847 states. [2020-10-13 09:19:22,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17847 states to 17847 states and 21010 transitions. [2020-10-13 09:19:22,085 INFO L78 Accepts]: Start accepts. Automaton has 17847 states and 21010 transitions. Word has length 552 [2020-10-13 09:19:22,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:22,086 INFO L479 AbstractCegarLoop]: Abstraction has 17847 states and 21010 transitions. [2020-10-13 09:19:22,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:22,086 INFO L276 IsEmpty]: Start isEmpty. Operand 17847 states and 21010 transitions. [2020-10-13 09:19:22,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2020-10-13 09:19:22,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:22,131 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:22,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:19:22,132 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:22,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:22,133 INFO L82 PathProgramCache]: Analyzing trace with hash 817148782, now seen corresponding path program 1 times [2020-10-13 09:19:22,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:22,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099401345] [2020-10-13 09:19:22,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:22,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:22,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:22,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:27,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:27,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 594 [2020-10-13 09:19:27,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:19:27,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 09:19:27,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-13 09:19:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:19:27,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:27,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:27,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:27,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:27,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:27,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:27,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:19:27,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:27,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:27,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:27,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:27,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:27,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:19:27,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:27,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:19:27,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:27,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:27,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:27,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 09:19:27,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:27,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 09:19:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:27,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:27,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:27,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:27,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:27,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 09:19:27,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:27,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:27,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:27,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:19:27,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:27,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-13 09:19:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:27,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:27,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:27,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 09:19:27,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:27,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-13 09:19:27,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-13 09:19:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:27,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:27,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:19:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:27,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:27,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:27,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 09:19:27,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:27,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:19:27,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:27,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:27,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:27,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:27,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 147 proven. 109 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-13 09:19:28,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099401345] [2020-10-13 09:19:28,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:28,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:28,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920449079] [2020-10-13 09:19:28,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:28,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:28,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:28,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:28,052 INFO L87 Difference]: Start difference. First operand 17847 states and 21010 transitions. Second operand 7 states. [2020-10-13 09:19:31,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:31,621 INFO L93 Difference]: Finished difference Result 36114 states and 44614 transitions. [2020-10-13 09:19:31,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:19:31,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 578 [2020-10-13 09:19:31,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:32,524 INFO L225 Difference]: With dead ends: 36114 [2020-10-13 09:19:32,524 INFO L226 Difference]: Without dead ends: 18273 [2020-10-13 09:19:32,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:19:32,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18273 states. [2020-10-13 09:19:32,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18273 to 11689. [2020-10-13 09:19:32,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11689 states. [2020-10-13 09:19:32,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11689 states to 11689 states and 13117 transitions. [2020-10-13 09:19:32,931 INFO L78 Accepts]: Start accepts. Automaton has 11689 states and 13117 transitions. Word has length 578 [2020-10-13 09:19:32,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:32,932 INFO L479 AbstractCegarLoop]: Abstraction has 11689 states and 13117 transitions. [2020-10-13 09:19:32,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:32,932 INFO L276 IsEmpty]: Start isEmpty. Operand 11689 states and 13117 transitions. [2020-10-13 09:19:32,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2020-10-13 09:19:32,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:32,960 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:32,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:19:32,962 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:32,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:32,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1778116426, now seen corresponding path program 1 times [2020-10-13 09:19:32,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:32,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139555426] [2020-10-13 09:19:32,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:33,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:33,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:33,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:33,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:38,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:38,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 662 [2020-10-13 09:19:38,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:19:38,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 09:19:38,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:38,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:19:38,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:19:38,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:19:38,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:38,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:38,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:38,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:38,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:38,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:38,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:19:38,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:38,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:38,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:38,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:38,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:38,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:38,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:38,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:38,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 09:19:38,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:38,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:19:38,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:38,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:38,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:38,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-13 09:19:38,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:38,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-13 09:19:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:38,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:38,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:38,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:38,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:38,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:19:38,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-13 09:19:38,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:38,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:19:38,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:38,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:19:38,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:38,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-10-13 09:19:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:38,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:38,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:38,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 09:19:38,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:38,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-13 09:19:38,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-13 09:19:38,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:38,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:39,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:19:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:39,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:39,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 09:19:39,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:39,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:19:39,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:39,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:39,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:39,516 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 147 proven. 109 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-13 09:19:39,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139555426] [2020-10-13 09:19:39,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:39,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:19:39,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343342315] [2020-10-13 09:19:39,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:19:39,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:39,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:19:39,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:19:39,519 INFO L87 Difference]: Start difference. First operand 11689 states and 13117 transitions. Second operand 10 states. [2020-10-13 09:19:43,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:43,352 INFO L93 Difference]: Finished difference Result 24136 states and 27262 transitions. [2020-10-13 09:19:43,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 09:19:43,353 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 646 [2020-10-13 09:19:43,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:43,381 INFO L225 Difference]: With dead ends: 24136 [2020-10-13 09:19:43,381 INFO L226 Difference]: Without dead ends: 12262 [2020-10-13 09:19:43,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-10-13 09:19:43,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12262 states. [2020-10-13 09:19:43,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12262 to 10979. [2020-10-13 09:19:43,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10979 states. [2020-10-13 09:19:43,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10979 states to 10979 states and 12160 transitions. [2020-10-13 09:19:43,576 INFO L78 Accepts]: Start accepts. Automaton has 10979 states and 12160 transitions. Word has length 646 [2020-10-13 09:19:43,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:43,577 INFO L479 AbstractCegarLoop]: Abstraction has 10979 states and 12160 transitions. [2020-10-13 09:19:43,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:19:43,577 INFO L276 IsEmpty]: Start isEmpty. Operand 10979 states and 12160 transitions. [2020-10-13 09:19:43,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2020-10-13 09:19:43,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:43,592 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:43,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:19:43,593 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:43,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:43,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1725570290, now seen corresponding path program 1 times [2020-10-13 09:19:43,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:43,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813553065] [2020-10-13 09:19:43,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:43,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:43,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:44,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:48,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:48,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 674 [2020-10-13 09:19:48,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:19:48,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 09:19:48,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:48,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:48,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 205 [2020-10-13 09:19:48,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:19:48,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:48,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:48,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:48,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:48,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:48,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:48,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:48,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:48,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:48,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:48,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:48,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:48,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:48,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:48,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:48,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:19:48,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:48,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:19:48,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:48,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:48,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-13 09:19:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:48,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-13 09:19:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:48,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:48,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:48,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:48,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:48,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 09:19:48,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:19:48,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:49,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-10-13 09:19:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:49,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:49,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:49,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 09:19:49,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:49,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 09:19:49,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:49,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:49,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-13 09:19:49,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:49,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:49,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:19:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:49,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:49,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:49,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 09:19:49,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:49,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:19:49,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:49,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:49,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:49,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:49,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:49,511 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 147 proven. 109 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-13 09:19:49,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813553065] [2020-10-13 09:19:49,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:49,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:49,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707438872] [2020-10-13 09:19:49,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:49,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:49,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:49,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:49,513 INFO L87 Difference]: Start difference. First operand 10979 states and 12160 transitions. Second operand 7 states. [2020-10-13 09:19:52,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:52,468 INFO L93 Difference]: Finished difference Result 21972 states and 24410 transitions. [2020-10-13 09:19:52,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:19:52,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 658 [2020-10-13 09:19:52,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:52,488 INFO L225 Difference]: With dead ends: 21972 [2020-10-13 09:19:52,489 INFO L226 Difference]: Without dead ends: 10999 [2020-10-13 09:19:52,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:19:52,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10999 states. [2020-10-13 09:19:52,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10999 to 10650. [2020-10-13 09:19:52,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10650 states. [2020-10-13 09:19:52,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10650 states to 10650 states and 11398 transitions. [2020-10-13 09:19:52,647 INFO L78 Accepts]: Start accepts. Automaton has 10650 states and 11398 transitions. Word has length 658 [2020-10-13 09:19:52,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:52,648 INFO L479 AbstractCegarLoop]: Abstraction has 10650 states and 11398 transitions. [2020-10-13 09:19:52,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:52,648 INFO L276 IsEmpty]: Start isEmpty. Operand 10650 states and 11398 transitions. [2020-10-13 09:19:52,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2020-10-13 09:19:52,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:52,666 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:19:52,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:19:52,667 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:52,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:52,667 INFO L82 PathProgramCache]: Analyzing trace with hash -636795643, now seen corresponding path program 1 times [2020-10-13 09:19:52,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:52,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959823918] [2020-10-13 09:19:52,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:52,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:52,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:53,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:53,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:57,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:57,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 983 [2020-10-13 09:19:57,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:19:57,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-13 09:19:57,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:57,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:57,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 514 [2020-10-13 09:19:57,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:19:57,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:57,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:57,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:57,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:57,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:57,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:57,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:57,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:57,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:57,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:57,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:57,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:57,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:57,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:57,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:57,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:19:57,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:57,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:19:57,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:57,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:57,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 09:19:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:57,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:57,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:57,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:19:57,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:57,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:19:57,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:57,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:57,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:57,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:57,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:57,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-13 09:19:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:58,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:58,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:58,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-13 09:19:58,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:58,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 09:19:58,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:58,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:58,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:58,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-13 09:19:58,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:58,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2020-10-13 09:19:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:58,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:58,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:58,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:58,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:58,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:19:58,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:58,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:58,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:58,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:19:58,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:58,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2020-10-13 09:19:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:58,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:58,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:58,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 09:19:58,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:58,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 09:19:58,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-13 09:19:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:58,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:58,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:19:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:58,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:58,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:58,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 09:19:58,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:58,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:19:58,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:58,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:58,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:58,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:58,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:58,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 403 proven. 109 refuted. 0 times theorem prover too weak. 853 trivial. 0 not checked. [2020-10-13 09:19:58,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959823918] [2020-10-13 09:19:58,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:58,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:58,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823873062] [2020-10-13 09:19:58,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:58,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:58,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:58,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:58,930 INFO L87 Difference]: Start difference. First operand 10650 states and 11398 transitions. Second operand 7 states. [2020-10-13 09:20:03,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:03,874 INFO L93 Difference]: Finished difference Result 24511 states and 26725 transitions. [2020-10-13 09:20:03,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:20:03,876 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 963 [2020-10-13 09:20:03,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:03,908 INFO L225 Difference]: With dead ends: 24511 [2020-10-13 09:20:03,909 INFO L226 Difference]: Without dead ends: 13867 [2020-10-13 09:20:03,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 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 09:20:03,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13867 states. [2020-10-13 09:20:04,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13867 to 13707. [2020-10-13 09:20:04,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13707 states. [2020-10-13 09:20:04,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13707 states to 13707 states and 14531 transitions. [2020-10-13 09:20:04,119 INFO L78 Accepts]: Start accepts. Automaton has 13707 states and 14531 transitions. Word has length 963 [2020-10-13 09:20:04,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:04,120 INFO L479 AbstractCegarLoop]: Abstraction has 13707 states and 14531 transitions. [2020-10-13 09:20:04,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:20:04,120 INFO L276 IsEmpty]: Start isEmpty. Operand 13707 states and 14531 transitions. [2020-10-13 09:20:04,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2020-10-13 09:20:04,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:04,134 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:20:04,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:20:04,135 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:04,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:04,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1097627686, now seen corresponding path program 1 times [2020-10-13 09:20:04,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:04,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544286361] [2020-10-13 09:20:04,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:04,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:04,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:04,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:04,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:06,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:09,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:09,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1022 [2020-10-13 09:20:09,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:20:09,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 09:20:09,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 553 [2020-10-13 09:20:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:20:09,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:09,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:09,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:09,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:09,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:09,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:09,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:20:09,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:09,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:09,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:09,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:09,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:09,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:09,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:09,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:20:09,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:09,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:20:09,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:09,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:09,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:09,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:09,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:09,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 09:20:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:09,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:09,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:09,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-13 09:20:09,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:09,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:20:09,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:09,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:09,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-13 09:20:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:09,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:09,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:09,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:20:09,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:09,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:20:09,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-13 09:20:09,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:09,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-10-13 09:20:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:09,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:09,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:09,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:09,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:09,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:20:09,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:20:09,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:09,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-13 09:20:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:09,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:09,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:09,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 09:20:09,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:09,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-13 09:20:09,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-13 09:20:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:09,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:09,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:20:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:09,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:09,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:09,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 09:20:09,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:09,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:20:09,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:09,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:10,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1451 backedges. 403 proven. 109 refuted. 0 times theorem prover too weak. 939 trivial. 0 not checked. [2020-10-13 09:20:10,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544286361] [2020-10-13 09:20:10,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:10,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:20:10,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690510709] [2020-10-13 09:20:10,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:20:10,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:10,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:20:10,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:20:10,554 INFO L87 Difference]: Start difference. First operand 13707 states and 14531 transitions. Second operand 7 states. [2020-10-13 09:20:14,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:14,253 INFO L93 Difference]: Finished difference Result 30650 states and 32978 transitions. [2020-10-13 09:20:14,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:20:14,254 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1002 [2020-10-13 09:20:14,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:14,286 INFO L225 Difference]: With dead ends: 30650 [2020-10-13 09:20:14,287 INFO L226 Difference]: Without dead ends: 17294 [2020-10-13 09:20:14,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:20:14,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17294 states. [2020-10-13 09:20:14,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17294 to 15738. [2020-10-13 09:20:14,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15738 states. [2020-10-13 09:20:14,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15738 states to 15738 states and 16605 transitions. [2020-10-13 09:20:14,577 INFO L78 Accepts]: Start accepts. Automaton has 15738 states and 16605 transitions. Word has length 1002 [2020-10-13 09:20:14,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:14,578 INFO L479 AbstractCegarLoop]: Abstraction has 15738 states and 16605 transitions. [2020-10-13 09:20:14,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:20:14,578 INFO L276 IsEmpty]: Start isEmpty. Operand 15738 states and 16605 transitions. [2020-10-13 09:20:14,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2020-10-13 09:20:14,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:14,592 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:20:14,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:20:14,592 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:14,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:14,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1190578771, now seen corresponding path program 1 times [2020-10-13 09:20:14,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:14,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004726256] [2020-10-13 09:20:14,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:14,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:14,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:14,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:14,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:15,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:19,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:19,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1059 [2020-10-13 09:20:19,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:20:19,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 09:20:19,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 514 [2020-10-13 09:20:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:20:19,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:19,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:19,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:19,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:19,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:19,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:19,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:20:19,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:19,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:19,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:19,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:19,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:19,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:19,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:19,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:19,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:20:19,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:19,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:20:19,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:19,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:19,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:19,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:19,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:19,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 09:20:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:19,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:19,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:19,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:20:19,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:19,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:20:19,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:19,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:19,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:19,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:19,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:19,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-13 09:20:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:19,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:20,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:20,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-13 09:20:20,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:20,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 09:20:20,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:20,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:20,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:20,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-13 09:20:20,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:20,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2020-10-13 09:20:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:20,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:20,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:20,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:20:20,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:20,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:20:20,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:20,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:20,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:20,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:20:20,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:20,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-10-13 09:20:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:20,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:20,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:20,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:20,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:20,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:20:20,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:20,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:20,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:20:20,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:20,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:20,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-10-13 09:20:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:20,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:20,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:20,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 09:20:20,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:20,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-13 09:20:20,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:20,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:20,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-13 09:20:20,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:20,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:20,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:20:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:20,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:20,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:20,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 09:20:20,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:20,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:20:20,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:20,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:20,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:20,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:20,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 319 proven. 144 refuted. 0 times theorem prover too weak. 1284 trivial. 0 not checked. [2020-10-13 09:20:20,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004726256] [2020-10-13 09:20:20,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:20,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:20:20,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069678587] [2020-10-13 09:20:20,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:20:20,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:20,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:20:20,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:20:20,949 INFO L87 Difference]: Start difference. First operand 15738 states and 16605 transitions. Second operand 7 states. [2020-10-13 09:20:24,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:24,437 INFO L93 Difference]: Finished difference Result 33746 states and 36258 transitions. [2020-10-13 09:20:24,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:20:24,438 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1037 [2020-10-13 09:20:24,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:24,467 INFO L225 Difference]: With dead ends: 33746 [2020-10-13 09:20:24,467 INFO L226 Difference]: Without dead ends: 18014 [2020-10-13 09:20:24,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:20:24,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18014 states. [2020-10-13 09:20:24,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18014 to 17768. [2020-10-13 09:20:24,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17768 states. [2020-10-13 09:20:24,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17768 states to 17768 states and 18703 transitions. [2020-10-13 09:20:24,768 INFO L78 Accepts]: Start accepts. Automaton has 17768 states and 18703 transitions. Word has length 1037 [2020-10-13 09:20:24,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:24,769 INFO L479 AbstractCegarLoop]: Abstraction has 17768 states and 18703 transitions. [2020-10-13 09:20:24,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:20:24,769 INFO L276 IsEmpty]: Start isEmpty. Operand 17768 states and 18703 transitions. [2020-10-13 09:20:24,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1115 [2020-10-13 09:20:24,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:24,788 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:20:24,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:20:24,788 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:24,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:24,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1264528954, now seen corresponding path program 1 times [2020-10-13 09:20:24,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:24,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362957660] [2020-10-13 09:20:24,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:24,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:24,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:25,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:27,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:29,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:29,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1138 [2020-10-13 09:20:29,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:20:29,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-13 09:20:29,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:29,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:29,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 669 [2020-10-13 09:20:29,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:20:29,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:30,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:30,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:30,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:30,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:30,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:30,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:20:30,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:30,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:30,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:30,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:30,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:30,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:30,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:30,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:30,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:20:30,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:30,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:20:30,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:30,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:30,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:30,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:30,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:30,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 09:20:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:30,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:30,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:30,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:20:30,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:30,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:20:30,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:30,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:30,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:30,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:30,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:30,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-13 09:20:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:30,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:30,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:30,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-13 09:20:30,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:30,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:20:30,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:30,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:30,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:30,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:30,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:30,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:20:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:30,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:30,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:30,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 09:20:30,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:30,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:20:30,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:30,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:30,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:30,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:30,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:30,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 585 [2020-10-13 09:20:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:30,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:30,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:30,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:20:30,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:30,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:20:30,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:30,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:30,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:30,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:20:30,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:30,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 659 [2020-10-13 09:20:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:30,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:30,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:30,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:30,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:30,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-13 09:20:30,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:30,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:30,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:30,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:20:30,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:30,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 769 [2020-10-13 09:20:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:30,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:31,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:31,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 09:20:31,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:31,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-13 09:20:31,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:31,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-13 09:20:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:31,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:31,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:20:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:31,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:31,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:31,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 09:20:31,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:31,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:20:31,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:31,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:31,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:31,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:31,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:31,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 495 proven. 109 refuted. 0 times theorem prover too weak. 1220 trivial. 0 not checked. [2020-10-13 09:20:31,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362957660] [2020-10-13 09:20:31,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:31,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:20:31,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61756864] [2020-10-13 09:20:31,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:20:31,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:31,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:20:31,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:20:31,790 INFO L87 Difference]: Start difference. First operand 17768 states and 18703 transitions. Second operand 7 states. [2020-10-13 09:20:35,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:35,308 INFO L93 Difference]: Finished difference Result 36430 states and 38874 transitions. [2020-10-13 09:20:35,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:20:35,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1114 [2020-10-13 09:20:35,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:35,337 INFO L225 Difference]: With dead ends: 36430 [2020-10-13 09:20:35,337 INFO L226 Difference]: Without dead ends: 18668 [2020-10-13 09:20:35,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:20:35,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18668 states. [2020-10-13 09:20:35,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18668 to 18444. [2020-10-13 09:20:35,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18444 states. [2020-10-13 09:20:35,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18444 states to 18444 states and 19405 transitions. [2020-10-13 09:20:35,598 INFO L78 Accepts]: Start accepts. Automaton has 18444 states and 19405 transitions. Word has length 1114 [2020-10-13 09:20:35,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:35,599 INFO L479 AbstractCegarLoop]: Abstraction has 18444 states and 19405 transitions. [2020-10-13 09:20:35,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:20:35,599 INFO L276 IsEmpty]: Start isEmpty. Operand 18444 states and 19405 transitions. [2020-10-13 09:20:35,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1260 [2020-10-13 09:20:35,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:35,626 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:20:35,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:20:35,626 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:35,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:35,627 INFO L82 PathProgramCache]: Analyzing trace with hash -595452983, now seen corresponding path program 1 times [2020-10-13 09:20:35,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:35,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204677405] [2020-10-13 09:20:35,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:35,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:36,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:41,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:41,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1281 [2020-10-13 09:20:41,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:20:41,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5852 [2020-10-13 09:20:41,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 09:20:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:20:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-13 09:20:41,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:41,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:41,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:41,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:41,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:41,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:41,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:20:41,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:41,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:41,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:41,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:20:41,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:41,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:41,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:42,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:42,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:42,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:20:42,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:20:42,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 845 [2020-10-13 09:20:42,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:42,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:42,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:42,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-13 09:20:42,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:42,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:20:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:43,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:43,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:43,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:20:43,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:43,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 09:20:43,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:43,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:43,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-13 09:20:43,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:43,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:43,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-13 09:20:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:43,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:43,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:43,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:20:43,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:43,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:20:43,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:43,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:43,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:20:43,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:43,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:43,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-10-13 09:20:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:43,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:43,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:43,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:20:43,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:43,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:20:43,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:43,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:43,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:20:43,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:43,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:43,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 804 [2020-10-13 09:20:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:43,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:43,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:43,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:43,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:43,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 09:20:43,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:20:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:43,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:43,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 914 [2020-10-13 09:20:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:43,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:43,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:43,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 09:20:43,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:43,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-13 09:20:43,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:43,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:43,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-13 09:20:43,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:43,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:43,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:20:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:43,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:43,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:43,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 09:20:43,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:43,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:20:43,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:43,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:43,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:43,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:43,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:44,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 72 proven. 854 refuted. 0 times theorem prover too weak. 1339 trivial. 0 not checked. [2020-10-13 09:20:44,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204677405] [2020-10-13 09:20:44,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:44,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:20:44,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656880997] [2020-10-13 09:20:44,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:20:44,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:44,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:20:44,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:20:44,633 INFO L87 Difference]: Start difference. First operand 18444 states and 19405 transitions. Second operand 8 states. [2020-10-13 09:20:48,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:48,515 INFO L93 Difference]: Finished difference Result 37448 states and 39924 transitions. [2020-10-13 09:20:48,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:20:48,516 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1259 [2020-10-13 09:20:48,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:48,542 INFO L225 Difference]: With dead ends: 37448 [2020-10-13 09:20:48,543 INFO L226 Difference]: Without dead ends: 19010 [2020-10-13 09:20:48,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:20:48,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19010 states. [2020-10-13 09:20:48,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19010 to 18783. [2020-10-13 09:20:48,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18783 states. [2020-10-13 09:20:48,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18783 states to 18783 states and 19748 transitions. [2020-10-13 09:20:48,843 INFO L78 Accepts]: Start accepts. Automaton has 18783 states and 19748 transitions. Word has length 1259 [2020-10-13 09:20:48,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:48,844 INFO L479 AbstractCegarLoop]: Abstraction has 18783 states and 19748 transitions. [2020-10-13 09:20:48,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:20:48,844 INFO L276 IsEmpty]: Start isEmpty. Operand 18783 states and 19748 transitions. [2020-10-13 09:20:48,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1415 [2020-10-13 09:20:48,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:48,876 INFO L422 BasicCegarLoop]: trace histogram [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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:20:48,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:20:48,877 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:48,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:48,878 INFO L82 PathProgramCache]: Analyzing trace with hash 236665970, now seen corresponding path program 1 times [2020-10-13 09:20:48,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:48,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624055272] [2020-10-13 09:20:48,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:49,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:49,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:54,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:54,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1438 [2020-10-13 09:20:54,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:20:54,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-13 09:20:54,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:54,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:54,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-13 09:20:54,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-13 09:20:54,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:54,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:54,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:54,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:54,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:54,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:54,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:20:54,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:54,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:54,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:54,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:54,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:54,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:54,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:54,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:54,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:20:54,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:54,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:20:54,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:54,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:54,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:54,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:54,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:54,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:20:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:54,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:54,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:54,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 09:20:54,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:54,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:20:54,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:54,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:54,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:54,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-13 09:20:54,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:54,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-13 09:20:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:54,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:54,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:54,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:20:54,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:54,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-13 09:20:54,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:54,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:54,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:54,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 277 [2020-10-13 09:20:54,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:54,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2020-10-13 09:20:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:54,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:54,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:54,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:20:54,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:54,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:20:54,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:54,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:54,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:20:54,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:54,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:54,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 771 [2020-10-13 09:20:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:54,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:55,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:55,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:20:55,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:55,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:20:55,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:20:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:55,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:55,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 959 [2020-10-13 09:20:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:55,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:55,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:55,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:55,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:55,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:20:55,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:55,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:55,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:20:55,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:55,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:55,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1069 [2020-10-13 09:20:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:55,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:55,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:55,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 09:20:55,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:55,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 09:20:55,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:55,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:55,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-13 09:20:55,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:55,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:55,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:20:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:55,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:55,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:55,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 09:20:55,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:55,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:20:55,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:55,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:55,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:55,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:55,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:56,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3094 backedges. 519 proven. 647 refuted. 0 times theorem prover too weak. 1928 trivial. 0 not checked. [2020-10-13 09:20:56,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624055272] [2020-10-13 09:20:56,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:56,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:20:56,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574147969] [2020-10-13 09:20:56,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:20:56,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:56,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:20:56,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:20:56,561 INFO L87 Difference]: Start difference. First operand 18783 states and 19748 transitions. Second operand 7 states. [2020-10-13 09:20:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:59,499 INFO L93 Difference]: Finished difference Result 39925 states and 41968 transitions. [2020-10-13 09:20:59,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:20:59,501 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1414 [2020-10-13 09:20:59,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:59,537 INFO L225 Difference]: With dead ends: 39925 [2020-10-13 09:20:59,537 INFO L226 Difference]: Without dead ends: 21485 [2020-10-13 09:20:59,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 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 09:20:59,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21485 states. [2020-10-13 09:20:59,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21485 to 21142. [2020-10-13 09:20:59,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21142 states. [2020-10-13 09:20:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21142 states to 21142 states and 22149 transitions. [2020-10-13 09:20:59,766 INFO L78 Accepts]: Start accepts. Automaton has 21142 states and 22149 transitions. Word has length 1414 [2020-10-13 09:20:59,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:59,767 INFO L479 AbstractCegarLoop]: Abstraction has 21142 states and 22149 transitions. [2020-10-13 09:20:59,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:20:59,767 INFO L276 IsEmpty]: Start isEmpty. Operand 21142 states and 22149 transitions. [2020-10-13 09:20:59,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1507 [2020-10-13 09:20:59,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:59,793 INFO L422 BasicCegarLoop]: trace histogram [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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:20:59,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 09:20:59,794 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:59,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:59,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1631714310, now seen corresponding path program 1 times [2020-10-13 09:20:59,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:59,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846055436] [2020-10-13 09:20:59,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:00,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:00,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:05,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:05,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1530 [2020-10-13 09:21:05,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:21:05,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5382 [2020-10-13 09:21:05,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-13 09:21:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-13 09:21:05,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:05,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:05,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:05,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:05,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:05,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:21:05,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:05,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:05,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:05,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:05,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:21:05,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:05,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 09:21:05,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:05,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:05,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:05,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-13 09:21:05,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:05,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:21:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:05,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:05,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:05,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:21:05,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:05,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-13 09:21:05,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:05,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:05,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:05,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-13 09:21:05,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:06,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:21:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:06,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:06,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:06,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:21:06,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:06,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 09:21:06,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-13 09:21:06,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:06,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:06,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2020-10-13 09:21:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:06,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:06,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:06,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:21:06,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:06,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:21:06,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:06,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:06,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:21:06,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:06,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:06,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 863 [2020-10-13 09:21:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:06,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:06,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:06,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:21:06,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:06,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:21:06,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:21:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:06,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:06,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1051 [2020-10-13 09:21:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:06,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:06,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:06,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:21:06,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:06,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:21:06,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:06,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:06,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:21:06,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:06,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:06,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1161 [2020-10-13 09:21:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:06,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:06,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:06,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 09:21:06,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:06,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 09:21:06,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:06,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:06,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-13 09:21:06,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:06,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:06,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:21:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:06,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:06,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:06,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 09:21:06,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:06,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:21:06,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:06,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:06,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:06,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:06,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:07,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3399 backedges. 348 proven. 866 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2020-10-13 09:21:07,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846055436] [2020-10-13 09:21:07,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:07,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:21:07,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311893204] [2020-10-13 09:21:07,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:21:07,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:07,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:21:07,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:21:07,949 INFO L87 Difference]: Start difference. First operand 21142 states and 22149 transitions. Second operand 8 states. [2020-10-13 09:21:11,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:11,809 INFO L93 Difference]: Finished difference Result 41945 states and 43955 transitions. [2020-10-13 09:21:11,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:21:11,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1506 [2020-10-13 09:21:11,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:11,838 INFO L225 Difference]: With dead ends: 41945 [2020-10-13 09:21:11,839 INFO L226 Difference]: Without dead ends: 21146 [2020-10-13 09:21:11,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:21:11,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21146 states. [2020-10-13 09:21:12,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21146 to 21142. [2020-10-13 09:21:12,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21142 states. [2020-10-13 09:21:12,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21142 states to 21142 states and 22147 transitions. [2020-10-13 09:21:12,048 INFO L78 Accepts]: Start accepts. Automaton has 21142 states and 22147 transitions. Word has length 1506 [2020-10-13 09:21:12,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:12,049 INFO L479 AbstractCegarLoop]: Abstraction has 21142 states and 22147 transitions. [2020-10-13 09:21:12,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:21:12,049 INFO L276 IsEmpty]: Start isEmpty. Operand 21142 states and 22147 transitions. [2020-10-13 09:21:12,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1617 [2020-10-13 09:21:12,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:12,076 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-13 09:21:12,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 09:21:12,077 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:12,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:12,078 INFO L82 PathProgramCache]: Analyzing trace with hash -423692830, now seen corresponding path program 1 times [2020-10-13 09:21:12,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:12,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407369082] [2020-10-13 09:21:12,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:12,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:12,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:15,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:17,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:17,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:17,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1640 [2020-10-13 09:21:17,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:21:17,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5190 [2020-10-13 09:21:17,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:17,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:17,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-13 09:21:17,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-13 09:21:17,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:17,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:17,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:17,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:17,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:17,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:17,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:21:17,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:17,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:17,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:17,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:17,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:17,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:17,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:17,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:17,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:21:17,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:17,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-13 09:21:17,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:17,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:17,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:17,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-13 09:21:17,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:17,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:21:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:17,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:17,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:17,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:21:17,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:17,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 09:21:17,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:17,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:17,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:17,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 09:21:17,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:18,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:21:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:18,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:18,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:18,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:21:18,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:18,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:21:18,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 09:21:18,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:18,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:18,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:21:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:18,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:18,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:18,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:21:18,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:18,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:21:18,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:21:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:18,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:18,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-13 09:21:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:18,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:18,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:18,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:21:18,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:18,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:21:18,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:18,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:18,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:21:18,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:18,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:18,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-13 09:21:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:18,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:18,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:18,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-13 09:21:18,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:18,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:21:18,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:18,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:18,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-13 09:21:18,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:18,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:18,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1271 [2020-10-13 09:21:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:18,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:18,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:18,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 09:21:18,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:18,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:21:18,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:18,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:18,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-13 09:21:18,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:18,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:18,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:21:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:18,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:18,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:18,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 09:21:18,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:18,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:21:18,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:18,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:18,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:18,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:18,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:19,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3968 backedges. 263 proven. 764 refuted. 0 times theorem prover too weak. 2941 trivial. 0 not checked. [2020-10-13 09:21:19,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407369082] [2020-10-13 09:21:19,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:19,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:21:19,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562497413] [2020-10-13 09:21:19,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:21:19,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:19,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:21:19,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:21:19,961 INFO L87 Difference]: Start difference. First operand 21142 states and 22147 transitions. Second operand 7 states. [2020-10-13 09:21:23,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:23,479 INFO L93 Difference]: Finished difference Result 42956 states and 44996 transitions. [2020-10-13 09:21:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:21:23,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1616 [2020-10-13 09:21:23,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:23,508 INFO L225 Difference]: With dead ends: 42956 [2020-10-13 09:21:23,508 INFO L226 Difference]: Without dead ends: 22157 [2020-10-13 09:21:23,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:21:23,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22157 states. [2020-10-13 09:21:23,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22157 to 21142. [2020-10-13 09:21:23,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21142 states. [2020-10-13 09:21:23,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21142 states to 21142 states and 22136 transitions. [2020-10-13 09:21:23,835 INFO L78 Accepts]: Start accepts. Automaton has 21142 states and 22136 transitions. Word has length 1616 [2020-10-13 09:21:23,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:23,835 INFO L479 AbstractCegarLoop]: Abstraction has 21142 states and 22136 transitions. [2020-10-13 09:21:23,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:21:23,836 INFO L276 IsEmpty]: Start isEmpty. Operand 21142 states and 22136 transitions. [2020-10-13 09:21:23,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1680 [2020-10-13 09:21:23,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:23,863 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-13 09:21:23,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 09:21:23,863 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:23,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:23,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1184784525, now seen corresponding path program 1 times [2020-10-13 09:21:23,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:23,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31861768] [2020-10-13 09:21:23,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:24,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:24,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking...