/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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:23:21,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:23:21,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:23:21,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:23:21,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:23:21,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:23:21,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:23:21,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:23:21,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:23:21,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:23:21,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:23:21,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:23:21,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:23:21,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:23:21,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:23:21,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:23:21,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:23:21,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:23:21,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:23:21,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:23:21,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:23:21,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:23:21,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:23:21,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:23:21,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:23:21,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:23:21,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:23:21,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:23:21,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:23:21,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:23:21,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:23:21,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:23:21,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:23:21,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:23:21,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:23:21,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:23:21,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:23:21,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:23:21,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:23:21,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:23:21,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:23:21,764 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 09:23:21,803 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:23:21,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:23:21,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:23:21,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:23:21,806 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:23:21,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:23:21,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:23:21,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:23:21,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:23:21,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:23:21,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:23:21,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:23:21,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:23:21,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:23:21,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:23:21,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:23:21,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:23:21,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:23:21,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:23:21,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:23:21,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:23:21,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:23:21,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:23:21,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:23:21,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:23:21,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:23:21,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:23:21,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:23:21,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:23:21,812 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 09:23:22,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:23:22,156 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:23:22,160 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:23:22,161 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:23:22,162 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:23:22,163 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label44.c [2020-10-13 09:23:22,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c7a31e69/1df06e0d57e24311a1d994097938e21c/FLAG29b589ee4 [2020-10-13 09:23:22,879 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:23:22,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label44.c [2020-10-13 09:23:22,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c7a31e69/1df06e0d57e24311a1d994097938e21c/FLAG29b589ee4 [2020-10-13 09:23:23,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c7a31e69/1df06e0d57e24311a1d994097938e21c [2020-10-13 09:23:23,074 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:23:23,075 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:23:23,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:23:23,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:23:23,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:23:23,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:23:23" (1/1) ... [2020-10-13 09:23:23,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da42254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:23, skipping insertion in model container [2020-10-13 09:23:23,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:23:23" (1/1) ... [2020-10-13 09:23:23,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:23:23,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:23:24,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:23:24,162 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:23:24,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:23:24,458 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:23:24,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:24 WrapperNode [2020-10-13 09:23:24,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:23:24,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:23:24,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:23:24,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:23:24,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:24" (1/1) ... [2020-10-13 09:23:24,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:24" (1/1) ... [2020-10-13 09:23:24,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:24" (1/1) ... [2020-10-13 09:23:24,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:24" (1/1) ... [2020-10-13 09:23:24,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:24" (1/1) ... [2020-10-13 09:23:24,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:24" (1/1) ... [2020-10-13 09:23:24,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:24" (1/1) ... [2020-10-13 09:23:24,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:23:24,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:23:24,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:23:24,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:23:24,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:24" (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 09:23:24,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:23:24,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:23:24,723 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:23:24,723 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:23:24,723 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:23:24,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:23:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:23:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:23:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:23:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:23:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:23:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:23:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:23:27,177 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:23:27,177 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:23:27,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:23:27 BoogieIcfgContainer [2020-10-13 09:23:27,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:23:27,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:23:27,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:23:27,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:23:27,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:23:23" (1/3) ... [2020-10-13 09:23:27,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69aba00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:23:27, skipping insertion in model container [2020-10-13 09:23:27,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:24" (2/3) ... [2020-10-13 09:23:27,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69aba00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:23:27, skipping insertion in model container [2020-10-13 09:23:27,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:23:27" (3/3) ... [2020-10-13 09:23:27,201 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label44.c [2020-10-13 09:23:27,212 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:23:27,224 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:23:27,239 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:23:27,269 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:23:27,269 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:23:27,269 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:23:27,269 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:23:27,269 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:23:27,269 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:23:27,270 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:23:27,270 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:23:27,311 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-13 09:23:27,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 09:23:27,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:27,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:23:27,318 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:27,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:27,323 INFO L82 PathProgramCache]: Analyzing trace with hash -2124077835, now seen corresponding path program 1 times [2020-10-13 09:23:27,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:27,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881342031] [2020-10-13 09:23:27,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:27,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:27,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:27,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 09:23:27,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:27,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-13 09:23:27,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:23:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:23:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 09:23:27,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:23:27,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:27,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:27,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:27,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:27,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:27,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:23:27,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:27,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:27,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:27,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:23:27,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:28,003 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 09:23:28,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881342031] [2020-10-13 09:23:28,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:23:28,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 09:23:28,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046116993] [2020-10-13 09:23:28,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:23:28,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:23:28,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:23:28,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:23:28,036 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 5 states. [2020-10-13 09:23:33,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:23:33,284 INFO L93 Difference]: Finished difference Result 1515 states and 2849 transitions. [2020-10-13 09:23:33,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:23:33,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-13 09:23:33,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:23:33,316 INFO L225 Difference]: With dead ends: 1515 [2020-10-13 09:23:33,317 INFO L226 Difference]: Without dead ends: 1038 [2020-10-13 09:23:33,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:23:33,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-10-13 09:23:33,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1034. [2020-10-13 09:23:33,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2020-10-13 09:23:33,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1485 transitions. [2020-10-13 09:23:33,449 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1485 transitions. Word has length 36 [2020-10-13 09:23:33,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:23:33,449 INFO L479 AbstractCegarLoop]: Abstraction has 1034 states and 1485 transitions. [2020-10-13 09:23:33,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:23:33,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1485 transitions. [2020-10-13 09:23:33,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 09:23:33,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:33,459 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2020-10-13 09:23:33,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:23:33,460 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:33,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:33,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1604656536, now seen corresponding path program 1 times [2020-10-13 09:23:33,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:33,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612771904] [2020-10-13 09:23:33,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:33,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:33,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:34,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:34,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 09:23:34,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:23:34,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 926 [2020-10-13 09:23:34,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:34,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:34,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 09:23:34,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 09:23:34,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:23:34,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:34,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:34,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:34,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:34,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:34,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:23:34,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:34,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:34,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:34,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:34,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:23:34,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:23:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:34,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:34,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:34,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:23:34,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:34,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 09:23:34,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:34,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:23:34,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:34,724 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:23:34,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612771904] [2020-10-13 09:23:34,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:23:34,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:23:34,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518526435] [2020-10-13 09:23:34,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:23:34,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:23:34,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:23:34,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:23:34,729 INFO L87 Difference]: Start difference. First operand 1034 states and 1485 transitions. Second operand 5 states. [2020-10-13 09:23:38,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:23:38,245 INFO L93 Difference]: Finished difference Result 2408 states and 3593 transitions. [2020-10-13 09:23:38,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:23:38,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 09:23:38,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:23:38,256 INFO L225 Difference]: With dead ends: 2408 [2020-10-13 09:23:38,256 INFO L226 Difference]: Without dead ends: 1380 [2020-10-13 09:23:38,259 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 09:23:38,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2020-10-13 09:23:38,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1376. [2020-10-13 09:23:38,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2020-10-13 09:23:38,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1900 transitions. [2020-10-13 09:23:38,324 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1900 transitions. Word has length 112 [2020-10-13 09:23:38,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:23:38,328 INFO L479 AbstractCegarLoop]: Abstraction has 1376 states and 1900 transitions. [2020-10-13 09:23:38,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:23:38,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1900 transitions. [2020-10-13 09:23:38,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-13 09:23:38,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:38,342 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:23:38,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:23:38,343 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:38,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:38,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1685986039, now seen corresponding path program 1 times [2020-10-13 09:23:38,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:38,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790655058] [2020-10-13 09:23:38,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:38,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:38,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:38,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:40,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:40,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:43,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:43,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-13 09:23:43,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:23:43,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 09:23:43,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:43,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:43,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-10-13 09:23:43,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 09:23:43,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:23:43,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:43,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:43,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:43,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:43,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:43,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:23:43,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:43,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:43,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:43,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:43,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:43,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:23:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:43,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:43,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:43,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:23:43,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:43,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:23:43,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:43,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:43,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:43,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:43,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:43,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 09:23:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:43,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:43,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:43,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:23:43,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:43,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:23:43,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:43,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:43,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:43,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:23:43,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 09:23:43,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790655058] [2020-10-13 09:23:43,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:23:43,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:23:43,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49482213] [2020-10-13 09:23:43,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:23:43,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:23:43,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:23:43,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:23:43,866 INFO L87 Difference]: Start difference. First operand 1376 states and 1900 transitions. Second operand 6 states. [2020-10-13 09:23:48,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:23:48,375 INFO L93 Difference]: Finished difference Result 3092 states and 4427 transitions. [2020-10-13 09:23:48,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:23:48,376 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 222 [2020-10-13 09:23:48,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:23:48,389 INFO L225 Difference]: With dead ends: 3092 [2020-10-13 09:23:48,389 INFO L226 Difference]: Without dead ends: 1722 [2020-10-13 09:23:48,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:23:48,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2020-10-13 09:23:48,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1718. [2020-10-13 09:23:48,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1718 states. [2020-10-13 09:23:48,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2371 transitions. [2020-10-13 09:23:48,450 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2371 transitions. Word has length 222 [2020-10-13 09:23:48,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:23:48,456 INFO L479 AbstractCegarLoop]: Abstraction has 1718 states and 2371 transitions. [2020-10-13 09:23:48,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:23:48,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2371 transitions. [2020-10-13 09:23:48,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-13 09:23:48,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:48,466 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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 09:23:48,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:23:48,467 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:48,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:48,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1104886198, now seen corresponding path program 1 times [2020-10-13 09:23:48,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:48,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980316198] [2020-10-13 09:23:48,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:48,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:48,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:48,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:49,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:49,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:52,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:53,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:53,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-13 09:23:53,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:23:53,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 09:23:53,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:53,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:53,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 09:23:53,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:23:53,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:53,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:53,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:53,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:53,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:53,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:53,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:23:53,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:53,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:53,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:53,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:53,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:53,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:23:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:53,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:53,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:53,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:23:53,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:53,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 09:23:53,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:53,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:53,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:53,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:23:53,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:53,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 09:23:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:53,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:53,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:54,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:54,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:23:54,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:23:54,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-13 09:23:54,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:23:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:23:54,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:23:54,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-13 09:23:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:54,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:54,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:54,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:23:54,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:54,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:23:54,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 09:23:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:54,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:23:54,813 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 164 proven. 91 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 09:23:54,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980316198] [2020-10-13 09:23:54,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:23:54,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:23:54,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698230550] [2020-10-13 09:23:54,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:23:54,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:23:54,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:23:54,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:23:54,819 INFO L87 Difference]: Start difference. First operand 1718 states and 2371 transitions. Second operand 6 states. [2020-10-13 09:23:58,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:23:58,016 INFO L93 Difference]: Finished difference Result 3556 states and 4884 transitions. [2020-10-13 09:23:58,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:23:58,017 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 314 [2020-10-13 09:23:58,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:23:58,032 INFO L225 Difference]: With dead ends: 3556 [2020-10-13 09:23:58,032 INFO L226 Difference]: Without dead ends: 1780 [2020-10-13 09:23:58,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:23:58,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2020-10-13 09:23:58,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1718. [2020-10-13 09:23:58,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1718 states. [2020-10-13 09:23:58,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2255 transitions. [2020-10-13 09:23:58,089 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2255 transitions. Word has length 314 [2020-10-13 09:23:58,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:23:58,089 INFO L479 AbstractCegarLoop]: Abstraction has 1718 states and 2255 transitions. [2020-10-13 09:23:58,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:23:58,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2255 transitions. [2020-10-13 09:23:58,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-13 09:23:58,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:58,096 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 3, 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 09:23:58,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:23:58,097 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:58,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:58,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1174247841, now seen corresponding path program 1 times [2020-10-13 09:23:58,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:58,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127783173] [2020-10-13 09:23:58,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:58,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:58,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:58,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:58,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:00,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:00,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:01,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:01,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:03,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:03,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-13 09:24:03,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 09:24:03,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 09:24:03,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:03,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:03,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 307 [2020-10-13 09:24:03,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 09:24:03,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:03,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:03,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:03,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:03,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:03,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:03,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:24:03,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:03,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:03,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:03,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:03,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:03,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:03,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:03,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:03,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:24:03,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:03,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:24:03,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:03,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:03,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:03,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:03,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:24:03,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:24:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:03,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:03,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:03,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:24:03,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:03,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:24:03,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:03,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:03,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:24:03,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-13 09:24:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:03,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:03,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:03,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:24:03,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:03,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:24:03,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:03,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:03,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:03,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 09:24:03,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:24:03,840 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 90 proven. 3 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2020-10-13 09:24:03,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127783173] [2020-10-13 09:24:03,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:03,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:24:03,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159599796] [2020-10-13 09:24:03,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:24:03,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:03,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:24:03,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:24:03,844 INFO L87 Difference]: Start difference. First operand 1718 states and 2255 transitions. Second operand 5 states. [2020-10-13 09:24:06,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:06,145 INFO L93 Difference]: Finished difference Result 3459 states and 4546 transitions. [2020-10-13 09:24:06,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:24:06,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 329 [2020-10-13 09:24:06,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:06,156 INFO L225 Difference]: With dead ends: 3459 [2020-10-13 09:24:06,157 INFO L226 Difference]: Without dead ends: 1722 [2020-10-13 09:24:06,162 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 09:24:06,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2020-10-13 09:24:06,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1718. [2020-10-13 09:24:06,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1718 states. [2020-10-13 09:24:06,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2253 transitions. [2020-10-13 09:24:06,208 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2253 transitions. Word has length 329 [2020-10-13 09:24:06,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:06,209 INFO L479 AbstractCegarLoop]: Abstraction has 1718 states and 2253 transitions. [2020-10-13 09:24:06,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:24:06,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2253 transitions. [2020-10-13 09:24:06,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-13 09:24:06,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:06,218 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:24:06,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:24:06,219 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:06,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:06,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1737870126, now seen corresponding path program 1 times [2020-10-13 09:24:06,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:06,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657942965] [2020-10-13 09:24:06,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:06,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:06,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:06,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:06,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:08,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:08,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:10,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:10,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-13 09:24:10,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:24:10,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4592 [2020-10-13 09:24:10,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 09:24:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:24:10,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:24:10,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:10,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:10,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:10,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:10,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:10,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:24:10,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:10,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:10,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:24:10,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:11,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:11,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:11,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:24:11,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:11,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:24:11,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:11,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:11,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:11,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:24:11,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:11,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:24:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:11,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:11,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:11,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:11,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:24:11,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:24:11,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-13 09:24:11,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:11,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:24:11,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:24:11,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:11,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-13 09:24:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:11,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:11,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:11,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 09:24:11,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:11,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:24:11,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 09:24:11,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:11,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:24:11,773 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 179 proven. 100 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-13 09:24:11,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657942965] [2020-10-13 09:24:11,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:11,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:24:11,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339364684] [2020-10-13 09:24:11,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:24:11,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:11,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:24:11,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:24:11,776 INFO L87 Difference]: Start difference. First operand 1718 states and 2253 transitions. Second operand 6 states. [2020-10-13 09:24:14,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:14,476 INFO L93 Difference]: Finished difference Result 3556 states and 4648 transitions. [2020-10-13 09:24:14,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:24:14,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 338 [2020-10-13 09:24:14,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:14,485 INFO L225 Difference]: With dead ends: 3556 [2020-10-13 09:24:14,486 INFO L226 Difference]: Without dead ends: 1780 [2020-10-13 09:24:14,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:24:14,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2020-10-13 09:24:14,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1718. [2020-10-13 09:24:14,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1718 states. [2020-10-13 09:24:14,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2195 transitions. [2020-10-13 09:24:14,533 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2195 transitions. Word has length 338 [2020-10-13 09:24:14,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:14,533 INFO L479 AbstractCegarLoop]: Abstraction has 1718 states and 2195 transitions. [2020-10-13 09:24:14,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:24:14,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2195 transitions. [2020-10-13 09:24:14,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-13 09:24:14,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:14,539 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:24:14,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:24:14,539 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:14,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:14,540 INFO L82 PathProgramCache]: Analyzing trace with hash 5960779, now seen corresponding path program 1 times [2020-10-13 09:24:14,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:14,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823542567] [2020-10-13 09:24:14,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:14,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:14,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:14,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:14,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:16,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:17,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:18,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:19,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:19,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-13 09:24:19,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:24:19,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 09:24:19,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:19,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:19,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 09:24:19,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:24:19,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:19,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:19,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:19,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:19,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:19,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:19,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:24:19,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:19,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:19,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:19,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:19,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:19,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:19,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:19,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:19,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:24:19,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:19,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:24:19,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:19,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:19,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:19,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 09:24:19,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:19,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 09:24:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:19,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:19,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:19,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:19,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:24:19,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:24:19,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 09:24:19,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:19,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:19,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:24:19,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:24:19,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:19,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-13 09:24:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:19,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:19,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:19,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 09:24:19,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:19,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 09:24:19,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:19,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:19,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 09:24:19,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:19,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:20,009 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 182 proven. 100 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-13 09:24:20,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823542567] [2020-10-13 09:24:20,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:20,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:24:20,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619557465] [2020-10-13 09:24:20,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:24:20,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:20,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:24:20,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:24:20,012 INFO L87 Difference]: Start difference. First operand 1718 states and 2195 transitions. Second operand 7 states. [2020-10-13 09:24:24,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:24,666 INFO L93 Difference]: Finished difference Result 4578 states and 6013 transitions. [2020-10-13 09:24:24,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:24:24,667 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 341 [2020-10-13 09:24:24,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:24,680 INFO L225 Difference]: With dead ends: 4578 [2020-10-13 09:24:24,680 INFO L226 Difference]: Without dead ends: 2789 [2020-10-13 09:24:24,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 09:24:24,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2020-10-13 09:24:24,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2778. [2020-10-13 09:24:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2778 states. [2020-10-13 09:24:24,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 3310 transitions. [2020-10-13 09:24:24,757 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 3310 transitions. Word has length 341 [2020-10-13 09:24:24,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:24,757 INFO L479 AbstractCegarLoop]: Abstraction has 2778 states and 3310 transitions. [2020-10-13 09:24:24,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:24:24,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 3310 transitions. [2020-10-13 09:24:24,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2020-10-13 09:24:24,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:24,764 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:24:24,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:24:24,765 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:24,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:24,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1940055478, now seen corresponding path program 1 times [2020-10-13 09:24:24,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:24,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364653930] [2020-10-13 09:24:24,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:24,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:24,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:25,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:26,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:27,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:29,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:29,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 444 [2020-10-13 09:24:29,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:24:29,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 09:24:29,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:29,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:24:29,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:24:29,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:24:29,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:29,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:29,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:29,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:29,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:29,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:29,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:24:29,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:29,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:29,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:29,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:29,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:24:29,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:30,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:30,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:30,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 09:24:30,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:30,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:24:30,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:30,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:30,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:30,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-13 09:24:30,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:30,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-13 09:24:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:30,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:30,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:30,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:30,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:24:30,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:24:30,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-13 09:24:30,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:24:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:24:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:24:30,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:30,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-10-13 09:24:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:30,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:30,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:30,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 09:24:30,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:30,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:24:30,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:30,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:30,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 09:24:30,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:30,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:30,969 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 198 proven. 100 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-13 09:24:30,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364653930] [2020-10-13 09:24:30,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:30,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:24:30,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113911353] [2020-10-13 09:24:30,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:24:30,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:30,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:24:30,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:24:30,972 INFO L87 Difference]: Start difference. First operand 2778 states and 3310 transitions. Second operand 10 states. [2020-10-13 09:24:34,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:34,807 INFO L93 Difference]: Finished difference Result 4752 states and 5627 transitions. [2020-10-13 09:24:34,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 09:24:34,808 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 430 [2020-10-13 09:24:34,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:34,816 INFO L225 Difference]: With dead ends: 4752 [2020-10-13 09:24:34,817 INFO L226 Difference]: Without dead ends: 1893 [2020-10-13 09:24:34,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-10-13 09:24:34,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2020-10-13 09:24:34,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1735. [2020-10-13 09:24:34,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1735 states. [2020-10-13 09:24:34,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 1976 transitions. [2020-10-13 09:24:34,873 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 1976 transitions. Word has length 430 [2020-10-13 09:24:34,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:34,873 INFO L479 AbstractCegarLoop]: Abstraction has 1735 states and 1976 transitions. [2020-10-13 09:24:34,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:24:34,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 1976 transitions. [2020-10-13 09:24:34,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2020-10-13 09:24:34,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:34,880 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 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] [2020-10-13 09:24:34,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:24:34,880 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:34,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:34,881 INFO L82 PathProgramCache]: Analyzing trace with hash 2093010590, now seen corresponding path program 1 times [2020-10-13 09:24:34,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:34,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121757753] [2020-10-13 09:24:34,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:34,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:35,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:35,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:38,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:39,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:39,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 507 [2020-10-13 09:24:39,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:24:39,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 09:24:39,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:39,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:39,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 368 [2020-10-13 09:24:39,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 09:24:39,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:40,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:40,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:40,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:40,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:40,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:40,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:24:40,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:40,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:40,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:40,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:40,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:40,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:24:40,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:40,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:24:40,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:40,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:40,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 09:24:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:40,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:40,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:40,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:24:40,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:40,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:24:40,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:40,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:40,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:40,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-13 09:24:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:40,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:40,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:40,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:24:40,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:40,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:24:40,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:40,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:40,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:40,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:24:40,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:40,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-13 09:24:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:40,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:40,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:40,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 09:24:40,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:40,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 09:24:40,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:40,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:40,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:24:40,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 09:24:40,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:40,400 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 420 proven. 2 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2020-10-13 09:24:40,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121757753] [2020-10-13 09:24:40,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:40,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:24:40,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71278235] [2020-10-13 09:24:40,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:24:40,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:40,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:24:40,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:24:40,403 INFO L87 Difference]: Start difference. First operand 1735 states and 1976 transitions. Second operand 7 states. [2020-10-13 09:24:43,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:43,171 INFO L93 Difference]: Finished difference Result 5223 states and 6044 transitions. [2020-10-13 09:24:43,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:24:43,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 491 [2020-10-13 09:24:43,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:43,184 INFO L225 Difference]: With dead ends: 5223 [2020-10-13 09:24:43,184 INFO L226 Difference]: Without dead ends: 3494 [2020-10-13 09:24:43,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:24:43,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3494 states. [2020-10-13 09:24:43,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3494 to 3476. [2020-10-13 09:24:43,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3476 states. [2020-10-13 09:24:43,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3476 states to 3476 states and 3857 transitions. [2020-10-13 09:24:43,260 INFO L78 Accepts]: Start accepts. Automaton has 3476 states and 3857 transitions. Word has length 491 [2020-10-13 09:24:43,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:43,260 INFO L479 AbstractCegarLoop]: Abstraction has 3476 states and 3857 transitions. [2020-10-13 09:24:43,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:24:43,261 INFO L276 IsEmpty]: Start isEmpty. Operand 3476 states and 3857 transitions. [2020-10-13 09:24:43,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2020-10-13 09:24:43,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:43,273 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:24:43,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:24:43,273 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:43,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:43,274 INFO L82 PathProgramCache]: Analyzing trace with hash 965880311, now seen corresponding path program 1 times [2020-10-13 09:24:43,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:43,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081493563] [2020-10-13 09:24:43,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:43,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:43,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:43,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:43,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:48,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:48,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 723 [2020-10-13 09:24:48,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:24:48,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 09:24:48,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:24:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:24:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:24:48,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:48,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:48,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:48,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:48,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:48,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:48,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:24:48,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:24:48,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:48,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:48,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:48,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:48,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:24:48,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:48,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 09:24:48,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:48,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:48,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:24:48,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 09:24:48,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:48,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 09:24:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:48,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:48,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:48,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:24:48,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:48,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 09:24:48,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:48,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:48,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 09:24:48,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:48,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:48,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-13 09:24:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:48,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:48,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:48,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:24:48,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:48,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:24:48,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:24:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:48,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:48,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-13 09:24:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:48,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:48,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:48,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:24:48,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:48,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:24:48,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:24:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:48,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:48,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-13 09:24:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:48,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:48,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:48,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:24:48,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:48,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 09:24:48,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:48,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:48,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:24:48,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:48,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 145 proven. 380 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2020-10-13 09:24:49,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081493563] [2020-10-13 09:24:49,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:49,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:24:49,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320187646] [2020-10-13 09:24:49,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:24:49,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:49,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:24:49,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:24:49,115 INFO L87 Difference]: Start difference. First operand 3476 states and 3857 transitions. Second operand 7 states. [2020-10-13 09:24:52,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:52,181 INFO L93 Difference]: Finished difference Result 7779 states and 9009 transitions. [2020-10-13 09:24:52,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:24:52,182 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 705 [2020-10-13 09:24:52,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:52,204 INFO L225 Difference]: With dead ends: 7779 [2020-10-13 09:24:52,204 INFO L226 Difference]: Without dead ends: 4309 [2020-10-13 09:24:52,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:24:52,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4309 states. [2020-10-13 09:24:52,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4309 to 4181. [2020-10-13 09:24:52,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4181 states. [2020-10-13 09:24:52,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4181 states to 4181 states and 4594 transitions. [2020-10-13 09:24:52,316 INFO L78 Accepts]: Start accepts. Automaton has 4181 states and 4594 transitions. Word has length 705 [2020-10-13 09:24:52,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:52,317 INFO L479 AbstractCegarLoop]: Abstraction has 4181 states and 4594 transitions. [2020-10-13 09:24:52,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:24:52,317 INFO L276 IsEmpty]: Start isEmpty. Operand 4181 states and 4594 transitions. [2020-10-13 09:24:52,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2020-10-13 09:24:52,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:52,333 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:24:52,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:24:52,333 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:52,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:52,334 INFO L82 PathProgramCache]: Analyzing trace with hash -2112460806, now seen corresponding path program 1 times [2020-10-13 09:24:52,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:52,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009020881] [2020-10-13 09:24:52,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:52,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:52,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:52,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:56,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:56,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:56,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:57,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:57,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 862 [2020-10-13 09:24:57,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:24:57,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-13 09:24:57,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 826 [2020-10-13 09:24:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 09:24:57,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:57,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:57,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:57,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:57,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:57,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:57,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:24:57,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:57,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:57,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:57,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:57,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:57,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:57,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:57,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:57,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:24:57,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:57,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 09:24:57,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:57,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:57,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:57,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:57,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:57,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:24:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:57,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:57,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:57,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:24:57,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:57,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:24:57,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:57,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:57,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:57,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:57,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:57,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-13 09:24:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:57,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:57,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:57,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:24:57,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:57,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:24:57,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:57,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:57,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-13 09:24:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:57,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:57,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:57,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:24:57,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:57,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:24:57,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:57,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:57,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:57,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:57,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:57,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-13 09:24:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:57,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:58,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:58,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:24:58,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:58,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 09:24:58,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:58,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:58,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:58,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-13 09:24:58,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:58,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 152 proven. 5 refuted. 0 times theorem prover too weak. 1246 trivial. 0 not checked. [2020-10-13 09:24:58,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009020881] [2020-10-13 09:24:58,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:58,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:24:58,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142370566] [2020-10-13 09:24:58,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:24:58,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:58,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:24:58,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:24:58,332 INFO L87 Difference]: Start difference. First operand 4181 states and 4594 transitions. Second operand 5 states. [2020-10-13 09:25:00,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:25:00,910 INFO L93 Difference]: Finished difference Result 9033 states and 10137 transitions. [2020-10-13 09:25:00,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:25:00,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 844 [2020-10-13 09:25:00,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:25:00,933 INFO L225 Difference]: With dead ends: 9033 [2020-10-13 09:25:00,933 INFO L226 Difference]: Without dead ends: 5541 [2020-10-13 09:25:00,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 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 09:25:00,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5541 states. [2020-10-13 09:25:01,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5541 to 4526. [2020-10-13 09:25:01,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4526 states. [2020-10-13 09:25:01,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4526 states to 4526 states and 5036 transitions. [2020-10-13 09:25:01,035 INFO L78 Accepts]: Start accepts. Automaton has 4526 states and 5036 transitions. Word has length 844 [2020-10-13 09:25:01,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:25:01,037 INFO L479 AbstractCegarLoop]: Abstraction has 4526 states and 5036 transitions. [2020-10-13 09:25:01,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:25:01,038 INFO L276 IsEmpty]: Start isEmpty. Operand 4526 states and 5036 transitions. [2020-10-13 09:25:01,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2020-10-13 09:25:01,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:25:01,059 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:25:01,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:25:01,060 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:25:01,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:25:01,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1096296553, now seen corresponding path program 1 times [2020-10-13 09:25:01,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:25:01,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016134141] [2020-10-13 09:25:01,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:25:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:01,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:01,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:02,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:04,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:06,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:06,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 911 [2020-10-13 09:25:06,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:25:06,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-13 09:25:06,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:06,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:06,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 772 [2020-10-13 09:25:06,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 09:25:06,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:06,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:25:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:06,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:06,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:06,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:25:06,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:06,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:25:06,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:06,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:06,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:25:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:06,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:06,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:06,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:25:06,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:06,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:25:06,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:06,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:06,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:25:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:06,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:06,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:06,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:25:06,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:06,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:25:06,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:06,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:06,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:06,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:06,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-13 09:25:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:06,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:06,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:06,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:25:06,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:06,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:25:06,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:06,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:06,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:06,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:06,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:06,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-13 09:25:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:06,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:06,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:06,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:25:06,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:06,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 09:25:06,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:25:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-13 09:25:06,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:06,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-13 09:25:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:06,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:06,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:06,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 09:25:06,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:06,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 09:25:06,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:06,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:06,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:25:06,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 09:25:06,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:07,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 552 proven. 2 refuted. 0 times theorem prover too weak. 837 trivial. 0 not checked. [2020-10-13 09:25:07,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016134141] [2020-10-13 09:25:07,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:25:07,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:25:07,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685564322] [2020-10-13 09:25:07,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:25:07,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:25:07,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:25:07,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:25:07,358 INFO L87 Difference]: Start difference. First operand 4526 states and 5036 transitions. Second operand 7 states. [2020-10-13 09:25:10,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:25:10,326 INFO L93 Difference]: Finished difference Result 10083 states and 11486 transitions. [2020-10-13 09:25:10,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:25:10,327 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 893 [2020-10-13 09:25:10,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:25:10,344 INFO L225 Difference]: With dead ends: 10083 [2020-10-13 09:25:10,345 INFO L226 Difference]: Without dead ends: 6244 [2020-10-13 09:25:10,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:25:10,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6244 states. [2020-10-13 09:25:10,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6244 to 6234. [2020-10-13 09:25:10,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6234 states. [2020-10-13 09:25:10,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6234 states to 6234 states and 6943 transitions. [2020-10-13 09:25:10,456 INFO L78 Accepts]: Start accepts. Automaton has 6234 states and 6943 transitions. Word has length 893 [2020-10-13 09:25:10,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:25:10,457 INFO L479 AbstractCegarLoop]: Abstraction has 6234 states and 6943 transitions. [2020-10-13 09:25:10,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:25:10,458 INFO L276 IsEmpty]: Start isEmpty. Operand 6234 states and 6943 transitions. [2020-10-13 09:25:10,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1025 [2020-10-13 09:25:10,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:25:10,479 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:25:10,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:25:10,480 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:25:10,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:25:10,480 INFO L82 PathProgramCache]: Analyzing trace with hash 2108351842, now seen corresponding path program 1 times [2020-10-13 09:25:10,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:25:10,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574734458] [2020-10-13 09:25:10,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:25:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:10,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:10,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:11,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:11,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:15,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:15,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1046 [2020-10-13 09:25:15,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:25:15,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 09:25:15,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:15,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:15,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 607 [2020-10-13 09:25:15,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:25:15,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:15,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:25:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:15,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:15,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:15,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:25:15,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:15,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:25:15,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:15,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:15,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:15,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:15,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:15,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:25:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:15,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:15,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:15,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:25:15,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:15,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:25:15,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:15,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:15,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:15,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:15,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:15,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:25:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:15,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:15,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:15,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:25:15,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:15,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:25:15,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:15,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:15,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:15,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:15,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:15,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-13 09:25:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:15,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:16,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:16,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:25:16,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:16,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:25:16,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:16,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:16,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:16,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:16,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:16,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-13 09:25:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:16,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:16,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:16,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:25:16,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:16,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:25:16,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:16,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:25:16,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 09:25:16,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:16,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-13 09:25:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:16,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:16,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:16,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:25:16,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:16,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 09:25:16,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:25:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:25:16,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:16,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-13 09:25:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:16,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:16,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:16,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:25:16,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:16,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 09:25:16,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:16,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:16,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:25:16,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:16,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:16,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-13 09:25:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:16,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:16,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:16,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:25:16,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:16,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:25:16,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 09:25:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:16,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2393 backedges. 668 proven. 178 refuted. 0 times theorem prover too weak. 1547 trivial. 0 not checked. [2020-10-13 09:25:16,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574734458] [2020-10-13 09:25:16,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:25:16,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:25:16,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893350378] [2020-10-13 09:25:16,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:25:16,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:25:16,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:25:16,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:25:16,912 INFO L87 Difference]: Start difference. First operand 6234 states and 6943 transitions. Second operand 7 states. [2020-10-13 09:25:19,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:25:19,636 INFO L93 Difference]: Finished difference Result 13165 states and 14794 transitions. [2020-10-13 09:25:19,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:25:19,637 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1024 [2020-10-13 09:25:19,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:25:19,660 INFO L225 Difference]: With dead ends: 13165 [2020-10-13 09:25:19,660 INFO L226 Difference]: Without dead ends: 7620 [2020-10-13 09:25:19,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:25:19,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7620 states. [2020-10-13 09:25:19,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7620 to 7608. [2020-10-13 09:25:19,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7608 states. [2020-10-13 09:25:19,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7608 states to 7608 states and 8472 transitions. [2020-10-13 09:25:19,799 INFO L78 Accepts]: Start accepts. Automaton has 7608 states and 8472 transitions. Word has length 1024 [2020-10-13 09:25:19,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:25:19,800 INFO L479 AbstractCegarLoop]: Abstraction has 7608 states and 8472 transitions. [2020-10-13 09:25:19,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:25:19,800 INFO L276 IsEmpty]: Start isEmpty. Operand 7608 states and 8472 transitions. [2020-10-13 09:25:19,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1256 [2020-10-13 09:25:19,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:25:19,839 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 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, 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, 1, 1, 1, 1] [2020-10-13 09:25:19,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:25:19,839 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:25:19,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:25:19,840 INFO L82 PathProgramCache]: Analyzing trace with hash -686811326, now seen corresponding path program 1 times [2020-10-13 09:25:19,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:25:19,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972161427] [2020-10-13 09:25:19,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:25:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:20,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:20,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:20,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:20,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:21,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:24,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:25,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:25,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1279 [2020-10-13 09:25:25,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:25:25,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-13 09:25:25,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:25,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:25,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 508 [2020-10-13 09:25:25,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:25:25,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:25,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:25:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:25,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:25,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:25,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:25:25,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:25,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:25:25,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:25,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:25,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:25:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:25,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:25,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:25,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:25:25,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:25,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:25:25,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:25,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:25,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:25,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:25,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:25,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:25:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:25,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:25,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:25,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:25:25,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:25,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 09:25:25,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:25,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:25:25,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:25,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:25:25,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:25,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:25:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:25,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:25,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:25,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:25:25,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:25,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 09:25:25,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:25,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:25,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:25:25,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:25:25,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:25,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-13 09:25:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:25,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:25,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:25,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:25:25,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:25,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 09:25:25,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:25,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:25,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:25:25,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:25,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:25,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2020-10-13 09:25:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:25,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:25,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:25,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:25:25,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:25,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:25:25,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:25,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:25,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 09:25:25,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:25,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:25,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 830 [2020-10-13 09:25:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:25,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:25,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:25,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:25:25,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:25,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:25:25,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:25,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:25,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:25:25,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:25,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:25,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 940 [2020-10-13 09:25:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:25,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:25,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:25,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:25:25,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:25,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:25:25,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:25:25,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:25,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:26,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1155 [2020-10-13 09:25:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:26,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:26,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:26,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:25:26,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:26,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:25:26,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:26,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:26,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 09:25:26,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:26,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:26,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3260 backedges. 409 proven. 332 refuted. 0 times theorem prover too weak. 2519 trivial. 0 not checked. [2020-10-13 09:25:26,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972161427] [2020-10-13 09:25:26,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:25:26,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:25:26,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648411321] [2020-10-13 09:25:26,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:25:26,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:25:26,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:25:26,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:25:26,743 INFO L87 Difference]: Start difference. First operand 7608 states and 8472 transitions. Second operand 8 states. [2020-10-13 09:25:30,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:25:30,870 INFO L93 Difference]: Finished difference Result 19965 states and 22495 transitions. [2020-10-13 09:25:30,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:25:30,872 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1255 [2020-10-13 09:25:30,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:25:30,918 INFO L225 Difference]: With dead ends: 19965 [2020-10-13 09:25:30,918 INFO L226 Difference]: Without dead ends: 13046 [2020-10-13 09:25:30,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:25:30,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13046 states. [2020-10-13 09:25:31,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13046 to 11686. [2020-10-13 09:25:31,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11686 states. [2020-10-13 09:25:31,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11686 states to 11686 states and 13171 transitions. [2020-10-13 09:25:31,180 INFO L78 Accepts]: Start accepts. Automaton has 11686 states and 13171 transitions. Word has length 1255 [2020-10-13 09:25:31,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:25:31,181 INFO L479 AbstractCegarLoop]: Abstraction has 11686 states and 13171 transitions. [2020-10-13 09:25:31,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:25:31,181 INFO L276 IsEmpty]: Start isEmpty. Operand 11686 states and 13171 transitions. [2020-10-13 09:25:31,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1257 [2020-10-13 09:25:31,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:25:31,222 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 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, 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, 1, 1, 1, 1] [2020-10-13 09:25:31,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:25:31,222 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:25:31,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:25:31,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1988765061, now seen corresponding path program 1 times [2020-10-13 09:25:31,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:25:31,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489452872] [2020-10-13 09:25:31,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:25:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:31,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:31,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:32,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:32,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:32,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:36,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:36,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1280 [2020-10-13 09:25:36,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:25:36,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-13 09:25:36,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 508 [2020-10-13 09:25:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:25:36,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:36,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:25:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:36,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:36,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:36,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:25:36,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:36,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:25:36,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:36,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:36,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:36,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:36,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:36,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:25:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:36,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:36,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:36,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:25:36,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:36,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:25:36,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:36,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:36,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:25:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:36,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:36,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:36,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:25:36,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:36,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 09:25:36,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:36,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:25:36,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:36,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:25:36,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:36,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:25:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:36,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:36,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:36,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:25:36,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:36,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:25:36,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:36,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:36,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:25:36,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:25:36,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:36,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-13 09:25:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:36,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:37,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:37,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:25:37,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:37,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:25:37,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:37,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:37,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:25:37,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:37,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:37,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2020-10-13 09:25:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:37,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:37,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:37,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:25:37,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:37,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:25:37,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:37,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:37,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 09:25:37,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:37,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:37,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-13 09:25:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:37,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:37,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:37,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:25:37,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:37,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:25:37,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:25:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:37,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:37,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 941 [2020-10-13 09:25:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:37,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:37,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:37,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:25:37,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:37,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 09:25:37,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:25:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:37,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:37,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1156 [2020-10-13 09:25:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:37,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:37,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:37,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:25:37,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:37,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:25:37,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 09:25:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:37,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 411 proven. 337 refuted. 0 times theorem prover too weak. 2519 trivial. 0 not checked. [2020-10-13 09:25:37,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489452872] [2020-10-13 09:25:37,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:25:37,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:25:37,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762603883] [2020-10-13 09:25:37,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:25:37,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:25:37,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:25:37,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:25:37,996 INFO L87 Difference]: Start difference. First operand 11686 states and 13171 transitions. Second operand 7 states. [2020-10-13 09:25:42,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:25:42,900 INFO L93 Difference]: Finished difference Result 28447 states and 32315 transitions. [2020-10-13 09:25:42,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:25:42,902 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1256 [2020-10-13 09:25:42,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:25:42,953 INFO L225 Difference]: With dead ends: 28447 [2020-10-13 09:25:42,953 INFO L226 Difference]: Without dead ends: 17452 [2020-10-13 09:25:42,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:25:42,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17452 states. [2020-10-13 09:25:43,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17452 to 17448. [2020-10-13 09:25:43,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17448 states. [2020-10-13 09:25:43,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17448 states to 17448 states and 19557 transitions. [2020-10-13 09:25:43,376 INFO L78 Accepts]: Start accepts. Automaton has 17448 states and 19557 transitions. Word has length 1256 [2020-10-13 09:25:43,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:25:43,377 INFO L479 AbstractCegarLoop]: Abstraction has 17448 states and 19557 transitions. [2020-10-13 09:25:43,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:25:43,378 INFO L276 IsEmpty]: Start isEmpty. Operand 17448 states and 19557 transitions. [2020-10-13 09:25:43,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1291 [2020-10-13 09:25:43,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:25:43,448 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:25:43,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:25:43,449 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:25:43,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:25:43,449 INFO L82 PathProgramCache]: Analyzing trace with hash 527437854, now seen corresponding path program 1 times [2020-10-13 09:25:43,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:25:43,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458188691] [2020-10-13 09:25:43,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:25:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:43,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:44,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:44,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:46,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:48,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:48,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1316 [2020-10-13 09:25:48,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:25:48,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 09:25:48,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:48,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:48,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 877 [2020-10-13 09:25:48,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:25:48,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:48,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:25:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:48,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:48,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:48,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:25:48,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:48,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:25:48,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:48,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:48,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:25:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:48,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:48,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:48,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:25:48,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:48,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:25:48,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:48,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:48,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:48,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:48,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:25:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:48,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:48,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:48,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:25:48,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:48,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:25:48,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:48,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:48,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:48,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:48,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:48,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:25:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:48,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:48,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:48,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:25:48,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:48,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:25:48,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:48,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:49,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:25:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:49,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:49,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:49,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:25:49,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:49,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:25:49,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:49,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:49,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-13 09:25:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:49,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:49,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:49,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:25:49,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:49,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:25:49,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:49,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:49,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:49,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:49,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:49,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2020-10-13 09:25:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:49,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:49,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:49,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:25:49,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:49,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:25:49,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:49,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:25:49,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:49,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-13 09:25:49,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:49,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 865 [2020-10-13 09:25:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:49,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:49,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:49,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:25:49,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:49,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:25:49,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:25:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:25:49,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:49,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-13 09:25:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:49,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:49,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:49,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:25:49,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:49,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:25:49,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:49,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:49,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:25:49,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:49,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:49,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1190 [2020-10-13 09:25:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:49,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:49,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:49,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:25:49,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:49,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:25:49,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:49,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:49,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 09:25:49,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:49,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4041 backedges. 936 proven. 178 refuted. 0 times theorem prover too weak. 2927 trivial. 0 not checked. [2020-10-13 09:25:50,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458188691] [2020-10-13 09:25:50,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:25:50,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:25:50,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375116100] [2020-10-13 09:25:50,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:25:50,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:25:50,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:25:50,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:25:50,352 INFO L87 Difference]: Start difference. First operand 17448 states and 19557 transitions. Second operand 7 states. [2020-10-13 09:25:53,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:25:53,999 INFO L93 Difference]: Finished difference Result 34878 states and 39246 transitions. [2020-10-13 09:25:54,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:25:54,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1290 [2020-10-13 09:25:54,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:25:54,040 INFO L225 Difference]: With dead ends: 34878 [2020-10-13 09:25:54,041 INFO L226 Difference]: Without dead ends: 18128 [2020-10-13 09:25:54,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:25:54,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18128 states. [2020-10-13 09:25:54,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18128 to 18128. [2020-10-13 09:25:54,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18128 states. [2020-10-13 09:25:54,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18128 states to 18128 states and 20194 transitions. [2020-10-13 09:25:54,387 INFO L78 Accepts]: Start accepts. Automaton has 18128 states and 20194 transitions. Word has length 1290 [2020-10-13 09:25:54,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:25:54,389 INFO L479 AbstractCegarLoop]: Abstraction has 18128 states and 20194 transitions. [2020-10-13 09:25:54,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:25:54,389 INFO L276 IsEmpty]: Start isEmpty. Operand 18128 states and 20194 transitions. [2020-10-13 09:25:54,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1312 [2020-10-13 09:25:54,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:25:54,434 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-13 09:25:54,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:25:54,435 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:25:54,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:25:54,436 INFO L82 PathProgramCache]: Analyzing trace with hash -10218872, now seen corresponding path program 1 times [2020-10-13 09:25:54,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:25:54,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925538823] [2020-10-13 09:25:54,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:25:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:54,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:54,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:55,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:59,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:59,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1335 [2020-10-13 09:25:59,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:25:59,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 09:25:59,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:59,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:59,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 616 [2020-10-13 09:25:59,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 09:25:59,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:59,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:25:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:59,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:59,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:59,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:25:59,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:59,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:25:59,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:59,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:59,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:59,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:59,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:59,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:25:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:59,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:59,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:59,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:25:59,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:59,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:25:59,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:59,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:59,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:59,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:59,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:25:59,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:25:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:59,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:59,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:59,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:25:59,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:59,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:25:59,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:59,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:00,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:26:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:00,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:00,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:00,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:26:00,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:00,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:26:00,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:00,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:00,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:00,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:00,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:00,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:26:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:00,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:00,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:00,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:26:00,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:00,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:26:00,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:00,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:00,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:00,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:26:00,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:00,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-13 09:26:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:00,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:00,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:00,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:26:00,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:00,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:26:00,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:26:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 09:26:00,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:00,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2020-10-13 09:26:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:00,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:00,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:00,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:26:00,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:00,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 09:26:00,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:00,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:26:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:00,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:00,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 996 [2020-10-13 09:26:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:00,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:00,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:00,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:26:00,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:00,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:26:00,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:00,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:00,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:26:00,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:00,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:00,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1211 [2020-10-13 09:26:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:00,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:00,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:00,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:26:00,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:00,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:26:00,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:00,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:00,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 09:26:00,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:00,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:01,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3400 backedges. 698 proven. 295 refuted. 0 times theorem prover too weak. 2407 trivial. 0 not checked. [2020-10-13 09:26:01,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925538823] [2020-10-13 09:26:01,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:26:01,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:26:01,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637305809] [2020-10-13 09:26:01,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:26:01,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:01,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:26:01,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:26:01,350 INFO L87 Difference]: Start difference. First operand 18128 states and 20194 transitions. Second operand 7 states. [2020-10-13 09:26:05,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:26:05,073 INFO L93 Difference]: Finished difference Result 38290 states and 42749 transitions. [2020-10-13 09:26:05,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:26:05,074 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1311 [2020-10-13 09:26:05,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:26:05,122 INFO L225 Difference]: With dead ends: 38290 [2020-10-13 09:26:05,122 INFO L226 Difference]: Without dead ends: 20860 [2020-10-13 09:26:05,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 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 09:26:05,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20860 states. [2020-10-13 09:26:05,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20860 to 20517. [2020-10-13 09:26:05,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20517 states. [2020-10-13 09:26:05,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20517 states to 20517 states and 22802 transitions. [2020-10-13 09:26:05,481 INFO L78 Accepts]: Start accepts. Automaton has 20517 states and 22802 transitions. Word has length 1311 [2020-10-13 09:26:05,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:26:05,482 INFO L479 AbstractCegarLoop]: Abstraction has 20517 states and 22802 transitions. [2020-10-13 09:26:05,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:26:05,482 INFO L276 IsEmpty]: Start isEmpty. Operand 20517 states and 22802 transitions. [2020-10-13 09:26:05,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1322 [2020-10-13 09:26:05,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:05,513 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:26:05,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:26:05,513 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:05,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:05,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1101918937, now seen corresponding path program 1 times [2020-10-13 09:26:05,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:05,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247498561] [2020-10-13 09:26:05,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:05,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:06,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:08,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:08,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:10,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:10,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1343 [2020-10-13 09:26:10,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:26:10,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-13 09:26:10,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:10,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:10,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1233 [2020-10-13 09:26:10,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:26:10,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:10,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:10,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:10,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:10,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:10,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:10,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:26:10,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:10,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:10,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:26:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:11,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:11,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:11,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:26:11,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:11,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:26:11,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:11,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:11,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:26:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:11,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:11,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:11,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:26:11,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:11,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:26:11,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:11,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:11,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:11,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:11,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:11,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:26:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:11,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:11,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:11,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:26:11,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:11,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:26:11,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:11,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:11,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:11,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:11,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:11,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:26:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:11,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:11,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:11,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:26:11,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:11,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:26:11,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:11,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:11,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:11,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:11,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:11,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-13 09:26:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:11,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:11,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:11,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:26:11,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:11,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:26:11,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:11,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:11,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:11,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:11,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:11,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-13 09:26:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:11,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:11,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:11,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:26:11,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:11,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 09:26:11,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:11,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:11,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:11,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-13 09:26:11,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:11,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1221 [2020-10-13 09:26:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:11,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:11,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:11,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:26:11,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:11,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:26:11,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:26:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:26:11,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:12,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3182 backedges. 642 proven. 2 refuted. 0 times theorem prover too weak. 2538 trivial. 0 not checked. [2020-10-13 09:26:12,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247498561] [2020-10-13 09:26:12,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:26:12,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:26:12,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600244048] [2020-10-13 09:26:12,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:26:12,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:12,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:26:12,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:26:12,274 INFO L87 Difference]: Start difference. First operand 20517 states and 22802 transitions. Second operand 7 states. [2020-10-13 09:26:17,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:26:17,020 INFO L93 Difference]: Finished difference Result 42069 states and 46750 transitions. [2020-10-13 09:26:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:26:17,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1321 [2020-10-13 09:26:17,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:26:17,065 INFO L225 Difference]: With dead ends: 42069 [2020-10-13 09:26:17,065 INFO L226 Difference]: Without dead ends: 21895 [2020-10-13 09:26:17,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:26:17,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21895 states. [2020-10-13 09:26:17,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21895 to 21215. [2020-10-13 09:26:17,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21215 states. [2020-10-13 09:26:17,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21215 states to 21215 states and 23023 transitions. [2020-10-13 09:26:17,415 INFO L78 Accepts]: Start accepts. Automaton has 21215 states and 23023 transitions. Word has length 1321 [2020-10-13 09:26:17,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:26:17,416 INFO L479 AbstractCegarLoop]: Abstraction has 21215 states and 23023 transitions. [2020-10-13 09:26:17,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:26:17,416 INFO L276 IsEmpty]: Start isEmpty. Operand 21215 states and 23023 transitions. [2020-10-13 09:26:17,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1330 [2020-10-13 09:26:17,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:17,448 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:26:17,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:26:17,448 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:17,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:17,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1922650828, now seen corresponding path program 1 times [2020-10-13 09:26:17,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:17,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289745133] [2020-10-13 09:26:17,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:17,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:18,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:20,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:21,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:22,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:22,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1351 [2020-10-13 09:26:22,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:26:22,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 09:26:22,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:22,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:22,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1312 [2020-10-13 09:26:22,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 09:26:22,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:22,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:22,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:22,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:22,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:22,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:22,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:26:22,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:22,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:22,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:22,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:22,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:22,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:26:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:22,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:22,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:22,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:26:22,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:22,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:26:22,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:22,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:22,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:22,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:22,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:23,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:26:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:23,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:23,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:23,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:26:23,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:23,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:26:23,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:23,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:23,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:23,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:23,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:23,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:26:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:23,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:23,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:23,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:26:23,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:23,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 09:26:23,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:23,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:23,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:23,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:23,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:23,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:26:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:23,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:23,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:23,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:26:23,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:23,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:26:23,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:23,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:23,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:23,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-13 09:26:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:23,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:23,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:23,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:26:23,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:23,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:26:23,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:23,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:23,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-13 09:26:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:23,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:23,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:23,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-13 09:26:23,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:23,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-13 09:26:23,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:23,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:23,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:23,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 289 [2020-10-13 09:26:23,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:26:23,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:26:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:23,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:23,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:23,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 09:26:23,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:23,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:26:23,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 09:26:23,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:24,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2803 backedges. 183 proven. 6 refuted. 0 times theorem prover too weak. 2614 trivial. 0 not checked. [2020-10-13 09:26:24,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289745133] [2020-10-13 09:26:24,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:26:24,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:26:24,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787553423] [2020-10-13 09:26:24,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:26:24,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:24,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:26:24,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:26:24,900 INFO L87 Difference]: Start difference. First operand 21215 states and 23023 transitions. Second operand 5 states. [2020-10-13 09:26:27,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:26:27,792 INFO L93 Difference]: Finished difference Result 41734 states and 45345 transitions. [2020-10-13 09:26:27,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:26:27,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1329 [2020-10-13 09:26:27,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:26:27,836 INFO L225 Difference]: With dead ends: 41734 [2020-10-13 09:26:27,836 INFO L226 Difference]: Without dead ends: 21215 [2020-10-13 09:26:27,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 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 09:26:27,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21215 states. [2020-10-13 09:26:28,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21215 to 20878. [2020-10-13 09:26:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20878 states. [2020-10-13 09:26:28,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20878 states to 20878 states and 22366 transitions. [2020-10-13 09:26:28,156 INFO L78 Accepts]: Start accepts. Automaton has 20878 states and 22366 transitions. Word has length 1329 [2020-10-13 09:26:28,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:26:28,160 INFO L479 AbstractCegarLoop]: Abstraction has 20878 states and 22366 transitions. [2020-10-13 09:26:28,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:26:28,160 INFO L276 IsEmpty]: Start isEmpty. Operand 20878 states and 22366 transitions. [2020-10-13 09:26:28,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1431 [2020-10-13 09:26:28,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:28,201 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:26:28,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 09:26:28,202 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:28,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:28,203 INFO L82 PathProgramCache]: Analyzing trace with hash 434450066, now seen corresponding path program 1 times [2020-10-13 09:26:28,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:28,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174976779] [2020-10-13 09:26:28,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:28,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:28,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:29,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:33,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:33,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1454 [2020-10-13 09:26:33,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:26:33,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 09:26:33,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:33,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:33,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-13 09:26:33,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-13 09:26:33,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:33,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:33,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:33,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:33,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:33,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:33,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:26:33,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:33,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:33,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:26:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:33,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:33,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:33,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:26:33,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:33,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 09:26:33,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:33,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:33,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-13 09:26:33,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:33,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:26:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:33,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:33,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:33,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:26:33,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:33,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 09:26:33,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:33,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:33,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:26:33,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 09:26:33,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:33,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:26:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:33,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:33,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:33,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:26:33,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:33,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:26:33,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:33,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:33,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 09:26:33,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:33,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:33,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:26:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:33,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:34,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:34,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:26:34,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:34,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:26:34,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:34,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:34,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:26:34,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:34,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:34,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-13 09:26:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:34,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:34,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:34,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:26:34,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:34,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 09:26:34,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:34,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:34,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:26:34,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:34,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:34,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-13 09:26:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:34,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:34,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:34,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-13 09:26:34,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:34,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 09:26:34,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:34,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:34,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-13 09:26:34,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:34,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:34,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:26:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:34,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:34,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:34,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 09:26:34,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:34,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:26:34,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:34,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:34,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:34,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1301 [2020-10-13 09:26:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:34,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:34,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 09:26:34,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:34,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:26:34,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:34,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:34,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 09:26:34,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:34,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:35,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3438 backedges. 382 proven. 703 refuted. 0 times theorem prover too weak. 2353 trivial. 0 not checked. [2020-10-13 09:26:35,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174976779] [2020-10-13 09:26:35,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:26:35,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:26:35,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995776297] [2020-10-13 09:26:35,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:26:35,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:35,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:26:35,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:26:35,531 INFO L87 Difference]: Start difference. First operand 20878 states and 22366 transitions. Second operand 7 states. [2020-10-13 09:26:38,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:26:38,906 INFO L93 Difference]: Finished difference Result 42731 states and 45904 transitions. [2020-10-13 09:26:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:26:38,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1430 [2020-10-13 09:26:38,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:26:38,941 INFO L225 Difference]: With dead ends: 42731 [2020-10-13 09:26:38,941 INFO L226 Difference]: Without dead ends: 22539 [2020-10-13 09:26:38,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 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 09:26:38,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22539 states. [2020-10-13 09:26:39,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22539 to 21863. [2020-10-13 09:26:39,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21863 states. [2020-10-13 09:26:39,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21863 states to 21863 states and 23336 transitions. [2020-10-13 09:26:39,226 INFO L78 Accepts]: Start accepts. Automaton has 21863 states and 23336 transitions. Word has length 1430 [2020-10-13 09:26:39,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:26:39,226 INFO L479 AbstractCegarLoop]: Abstraction has 21863 states and 23336 transitions. [2020-10-13 09:26:39,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:26:39,226 INFO L276 IsEmpty]: Start isEmpty. Operand 21863 states and 23336 transitions. [2020-10-13 09:26:39,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1561 [2020-10-13 09:26:39,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:39,260 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:26:39,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 09:26:39,260 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:39,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:39,260 INFO L82 PathProgramCache]: Analyzing trace with hash -389161913, now seen corresponding path program 1 times [2020-10-13 09:26:39,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:39,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353776311] [2020-10-13 09:26:39,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:39,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:39,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:39,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:40,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:44,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:44,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1586 [2020-10-13 09:26:44,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:26:44,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-13 09:26:44,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:44,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:44,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 508 [2020-10-13 09:26:44,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-13 09:26:44,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:44,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:44,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:44,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:44,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:44,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:44,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:26:44,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:44,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:44,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:44,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:44,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:44,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:26:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:44,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:44,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:44,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:26:44,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:44,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:26:44,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:44,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:44,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:26:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:44,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:44,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:44,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:26:44,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:44,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-13 09:26:44,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:44,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:44,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:44,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:26:44,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:45,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:26:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:45,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:45,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:45,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 09:26:45,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:45,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 09:26:45,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:45,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:45,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:26:45,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-13 09:26:45,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:45,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2020-10-13 09:26:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:45,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:45,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:45,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:26:45,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:45,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:26:45,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:45,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:45,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:26:45,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:45,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:45,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-10-13 09:26:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:45,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:45,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:45,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:26:45,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:45,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:26:45,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:45,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:45,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:26:45,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:45,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:45,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1024 [2020-10-13 09:26:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:45,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:45,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:45,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 09:26:45,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:45,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:26:45,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:45,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:45,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 09:26:45,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:45,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:45,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1136 [2020-10-13 09:26:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:45,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:45,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:45,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-13 09:26:45,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:45,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:26:45,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:45,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:45,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-13 09:26:45,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:45,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:45,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:26:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:45,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:45,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:45,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 09:26:45,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:45,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:26:45,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:45,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:45,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:45,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:45,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:45,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1431 [2020-10-13 09:26:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:45,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:45,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:45,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 09:26:45,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:45,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:26:45,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:45,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:45,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 09:26:45,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:45,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:46,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4226 backedges. 535 proven. 579 refuted. 0 times theorem prover too weak. 3112 trivial. 0 not checked. [2020-10-13 09:26:46,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353776311] [2020-10-13 09:26:46,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:26:46,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:26:46,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469868580] [2020-10-13 09:26:46,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:26:46,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:46,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:26:46,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:26:46,925 INFO L87 Difference]: Start difference. First operand 21863 states and 23336 transitions. Second operand 7 states. [2020-10-13 09:26:50,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:26:50,376 INFO L93 Difference]: Finished difference Result 43038 states and 45991 transitions. [2020-10-13 09:26:50,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:26:50,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1560 [2020-10-13 09:26:50,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:26:50,409 INFO L225 Difference]: With dead ends: 43038 [2020-10-13 09:26:50,409 INFO L226 Difference]: Without dead ends: 21861 [2020-10-13 09:26:50,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 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 09:26:50,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21861 states. [2020-10-13 09:26:50,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21861 to 21855. [2020-10-13 09:26:50,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21855 states. [2020-10-13 09:26:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21855 states to 21855 states and 23170 transitions. [2020-10-13 09:26:50,709 INFO L78 Accepts]: Start accepts. Automaton has 21855 states and 23170 transitions. Word has length 1560 [2020-10-13 09:26:50,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:26:50,710 INFO L479 AbstractCegarLoop]: Abstraction has 21855 states and 23170 transitions. [2020-10-13 09:26:50,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:26:50,710 INFO L276 IsEmpty]: Start isEmpty. Operand 21855 states and 23170 transitions. [2020-10-13 09:26:50,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1590 [2020-10-13 09:26:50,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:50,748 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-13 09:26:50,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 09:26:50,749 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:50,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:50,750 INFO L82 PathProgramCache]: Analyzing trace with hash 2131499297, now seen corresponding path program 1 times [2020-10-13 09:26:50,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:50,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942342728] [2020-10-13 09:26:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:51,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:51,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:51,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:51,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:55,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:55,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1613 [2020-10-13 09:26:55,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:26:55,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 09:26:55,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:55,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1471 [2020-10-13 09:26:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 09:26:55,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:56,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:56,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:56,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:56,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:56,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:56,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:26:56,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:56,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:56,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:56,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:56,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:56,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:26:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:56,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:56,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:56,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:26:56,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:56,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:26:56,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:56,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:56,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:56,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:56,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:26:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:56,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:56,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:56,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:26:56,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:56,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 09:26:56,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:56,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:56,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:56,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:26:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:56,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:56,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:56,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:26:56,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:56,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 09:26:56,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:56,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:56,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:56,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:56,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:56,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2020-10-13 09:26:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:56,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:56,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:56,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:26:56,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:56,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 09:26:56,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:56,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:56,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1053 [2020-10-13 09:26:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:56,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:56,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:56,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 09:26:56,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:56,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:26:56,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:56,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:56,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:56,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:56,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:56,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1165 [2020-10-13 09:26:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:56,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:57,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:57,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-13 09:26:57,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:57,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-13 09:26:57,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:57,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:57,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:57,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 289 [2020-10-13 09:26:57,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:57,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:26:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:57,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:57,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:57,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 09:26:57,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:57,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:26:57,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:57,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:57,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 09:26:57,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:57,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1460 [2020-10-13 09:26:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:57,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:57,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:57,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 09:26:57,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:57,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-13 09:26:57,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:57,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:57,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:26:57,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 09:26:57,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3926 backedges. 816 proven. 2 refuted. 0 times theorem prover too weak. 3108 trivial. 0 not checked. [2020-10-13 09:26:58,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942342728] [2020-10-13 09:26:58,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:26:58,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:26:58,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544018872] [2020-10-13 09:26:58,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:26:58,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:58,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:26:58,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:26:58,472 INFO L87 Difference]: Start difference. First operand 21855 states and 23170 transitions. Second operand 7 states.