/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/Problem15_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:03:54,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:03:54,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:03:54,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:03:54,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:03:54,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:03:54,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:03:54,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:03:54,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:03:54,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:03:54,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:03:54,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:03:54,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:03:54,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:03:54,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:03:54,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:03:54,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:03:54,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:03:54,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:03:54,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:03:54,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:03:54,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:03:54,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:03:54,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:03:54,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:03:54,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:03:54,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:03:54,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:03:54,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:03:54,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:03:54,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:03:54,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:03:54,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:03:54,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:03:54,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:03:54,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:03:54,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:03:54,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:03:54,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:03:54,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:03:54,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:03:54,881 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 09:03:54,905 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:03:54,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:03:54,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:03:54,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:03:54,907 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:03:54,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:03:54,907 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:03:54,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:03:54,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:03:54,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:03:54,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:03:54,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:03:54,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:03:54,908 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:03:54,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:03:54,909 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:03:54,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:03:54,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:03:54,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:03:54,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:03:54,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:03:54,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:03:54,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:03:54,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:03:54,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:03:54,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:03:54,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:03:54,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:03:54,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:03:54,912 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 09:03:55,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:03:55,276 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:03:55,282 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:03:55,285 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:03:55,285 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:03:55,286 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label27.c [2020-10-13 09:03:55,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb7d95b58/ab90f85daab04972b8845a0de3af6569/FLAGc726ed5ff [2020-10-13 09:03:56,053 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:03:56,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label27.c [2020-10-13 09:03:56,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb7d95b58/ab90f85daab04972b8845a0de3af6569/FLAGc726ed5ff [2020-10-13 09:03:56,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb7d95b58/ab90f85daab04972b8845a0de3af6569 [2020-10-13 09:03:56,211 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:03:56,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:03:56,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:03:56,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:03:56,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:03:56,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:03:56" (1/1) ... [2020-10-13 09:03:56,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49320105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:56, skipping insertion in model container [2020-10-13 09:03:56,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:03:56" (1/1) ... [2020-10-13 09:03:56,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:03:56,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:03:57,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:03:57,309 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:03:57,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:03:57,637 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:03:57,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:57 WrapperNode [2020-10-13 09:03:57,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:03:57,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:03:57,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:03:57,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:03:57,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:57" (1/1) ... [2020-10-13 09:03:57,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:57" (1/1) ... [2020-10-13 09:03:57,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:57" (1/1) ... [2020-10-13 09:03:57,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:57" (1/1) ... [2020-10-13 09:03:57,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:57" (1/1) ... [2020-10-13 09:03:57,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:57" (1/1) ... [2020-10-13 09:03:57,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:57" (1/1) ... [2020-10-13 09:03:57,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:03:57,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:03:57,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:03:57,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:03:57,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:57" (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 09:03:57,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:03:57,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:03:57,900 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:03:57,900 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:03:57,901 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:03:57,901 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:03:57,901 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:03:57,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:03:57,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:03:57,902 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:03:57,902 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:03:57,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:03:57,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:04:04,541 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:04:04,542 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:04:04,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:04:04 BoogieIcfgContainer [2020-10-13 09:04:04,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:04:04,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:04:04,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:04:04,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:04:04,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:03:56" (1/3) ... [2020-10-13 09:04:04,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd65909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:04:04, skipping insertion in model container [2020-10-13 09:04:04,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:57" (2/3) ... [2020-10-13 09:04:04,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd65909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:04:04, skipping insertion in model container [2020-10-13 09:04:04,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:04:04" (3/3) ... [2020-10-13 09:04:04,571 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label27.c [2020-10-13 09:04:04,592 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:04:04,608 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:04:04,624 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:04:04,666 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:04:04,666 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:04:04,667 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:04:04,667 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:04:04,667 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:04:04,667 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:04:04,667 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:04:04,667 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:04:04,699 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 09:04:04,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 09:04:04,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:04,711 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:04:04,712 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:04,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:04,720 INFO L82 PathProgramCache]: Analyzing trace with hash 346586261, now seen corresponding path program 1 times [2020-10-13 09:04:04,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:04,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331550770] [2020-10-13 09:04:04,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:05,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:05,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:05,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 09:04:05,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:05,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-13 09:04:05,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:05,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:04:05,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:04:05,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 09:04:05,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:04:05,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:05,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:05,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:05,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:05,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:05,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:04:05,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:04:05,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:05,553 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 09:04:05,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331550770] [2020-10-13 09:04:05,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:04:05,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:04:05,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895769798] [2020-10-13 09:04:05,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:04:05,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:05,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:04:05,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:04:05,639 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 09:04:12,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:12,128 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-13 09:04:12,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:04:12,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-13 09:04:12,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:12,214 INFO L225 Difference]: With dead ends: 1199 [2020-10-13 09:04:12,215 INFO L226 Difference]: Without dead ends: 697 [2020-10-13 09:04:12,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:04:12,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-13 09:04:12,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-13 09:04:12,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-13 09:04:12,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-13 09:04:12,343 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 43 [2020-10-13 09:04:12,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:12,344 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-13 09:04:12,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:04:12,344 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-13 09:04:12,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 09:04:12,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:12,350 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, 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] [2020-10-13 09:04:12,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:04:12,351 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:12,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:12,351 INFO L82 PathProgramCache]: Analyzing trace with hash -817588878, now seen corresponding path program 1 times [2020-10-13 09:04:12,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:12,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781438404] [2020-10-13 09:04:12,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:12,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:12,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:13,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:13,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 09:04:13,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:04:13,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1558 [2020-10-13 09:04:13,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:13,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:13,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:04:13,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 09:04:13,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:04:14,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:14,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:14,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:14,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:14,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:14,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:04:14,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:14,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:14,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:14,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:14,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:14,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:14,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:14,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:14,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:04:14,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:14,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 09:04:14,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:14,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:14,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:14,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:04:14,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:14,223 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:04:14,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781438404] [2020-10-13 09:04:14,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:14,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:04:14,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566577452] [2020-10-13 09:04:14,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:04:14,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:14,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:04:14,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:04:14,228 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 5 states. [2020-10-13 09:04:24,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:24,749 INFO L93 Difference]: Finished difference Result 2008 states and 2962 transitions. [2020-10-13 09:04:24,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:04:24,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 09:04:24,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:24,764 INFO L225 Difference]: With dead ends: 2008 [2020-10-13 09:04:24,764 INFO L226 Difference]: Without dead ends: 1323 [2020-10-13 09:04:24,768 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 09:04:24,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-10-13 09:04:24,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1317. [2020-10-13 09:04:24,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-10-13 09:04:24,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1710 transitions. [2020-10-13 09:04:24,835 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1710 transitions. Word has length 112 [2020-10-13 09:04:24,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:24,836 INFO L479 AbstractCegarLoop]: Abstraction has 1317 states and 1710 transitions. [2020-10-13 09:04:24,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:04:24,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1710 transitions. [2020-10-13 09:04:24,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-13 09:04:24,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:24,844 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, 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, 1, 1, 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 09:04:24,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:04:24,844 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:24,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:24,845 INFO L82 PathProgramCache]: Analyzing trace with hash -620989714, now seen corresponding path program 1 times [2020-10-13 09:04:24,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:24,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471455433] [2020-10-13 09:04:24,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:24,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:25,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:25,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:25,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:26,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:27,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:29,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:29,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 09:04:29,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:04:29,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4686 [2020-10-13 09:04:29,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:04:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:04:29,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:29,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:29,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:29,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:29,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:29,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:29,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:04:29,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:29,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:04:29,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:29,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:29,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:29,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:04:29,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:29,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-13 09:04:29,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:29,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:29,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:04:29,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:29,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:04:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:30,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:30,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:30,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:30,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:04:30,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:04:30,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-13 09:04:30,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:30,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:30,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:04:30,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:04:30,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:30,894 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:04:30,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471455433] [2020-10-13 09:04:30,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:30,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:04:30,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400973764] [2020-10-13 09:04:30,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:04:30,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:30,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:04:30,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:04:30,901 INFO L87 Difference]: Start difference. First operand 1317 states and 1710 transitions. Second operand 6 states. [2020-10-13 09:04:40,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:40,076 INFO L93 Difference]: Finished difference Result 2708 states and 3509 transitions. [2020-10-13 09:04:40,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:04:40,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 217 [2020-10-13 09:04:40,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:40,091 INFO L225 Difference]: With dead ends: 2708 [2020-10-13 09:04:40,091 INFO L226 Difference]: Without dead ends: 1357 [2020-10-13 09:04:40,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:04:40,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2020-10-13 09:04:40,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1319. [2020-10-13 09:04:40,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-10-13 09:04:40,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1699 transitions. [2020-10-13 09:04:40,146 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1699 transitions. Word has length 217 [2020-10-13 09:04:40,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:40,147 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1699 transitions. [2020-10-13 09:04:40,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:04:40,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1699 transitions. [2020-10-13 09:04:40,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-13 09:04:40,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:40,163 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:40,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:04:40,164 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:40,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:40,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1084476227, now seen corresponding path program 1 times [2020-10-13 09:04:40,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:40,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39221344] [2020-10-13 09:04:40,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:40,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:40,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:41,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:41,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:42,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:44,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:45,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:45,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-13 09:04:45,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:04:45,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 09:04:45,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:45,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:45,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-13 09:04:45,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:04:45,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:45,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:45,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:45,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:45,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:45,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:45,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:04:45,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:45,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:45,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:45,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:45,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:45,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:45,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:45,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:45,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:04:45,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:45,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-13 09:04:45,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:45,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:45,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:45,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-13 09:04:45,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:45,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 09:04:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:45,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:45,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:45,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:45,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:04:45,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:04:45,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-13 09:04:45,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:45,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:45,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:04:45,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:04:45,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:46,171 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:04:46,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39221344] [2020-10-13 09:04:46,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:46,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:04:46,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067559767] [2020-10-13 09:04:46,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:04:46,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:46,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:04:46,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:04:46,176 INFO L87 Difference]: Start difference. First operand 1319 states and 1699 transitions. Second operand 6 states. [2020-10-13 09:04:54,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:54,229 INFO L93 Difference]: Finished difference Result 2707 states and 3482 transitions. [2020-10-13 09:04:54,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:04:54,230 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 284 [2020-10-13 09:04:54,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:54,238 INFO L225 Difference]: With dead ends: 2707 [2020-10-13 09:04:54,238 INFO L226 Difference]: Without dead ends: 1357 [2020-10-13 09:04:54,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 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 09:04:54,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2020-10-13 09:04:54,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1319. [2020-10-13 09:04:54,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-10-13 09:04:54,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1624 transitions. [2020-10-13 09:04:54,281 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1624 transitions. Word has length 284 [2020-10-13 09:04:54,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:54,281 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1624 transitions. [2020-10-13 09:04:54,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:04:54,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1624 transitions. [2020-10-13 09:04:54,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-13 09:04:54,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:54,287 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:54,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:04:54,288 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:54,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:54,288 INFO L82 PathProgramCache]: Analyzing trace with hash 2035850988, now seen corresponding path program 1 times [2020-10-13 09:04:54,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:54,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181447156] [2020-10-13 09:04:54,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:54,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:54,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:54,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:59,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:59,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-13 09:04:59,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:04:59,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 09:04:59,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:59,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:59,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 292 [2020-10-13 09:04:59,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 09:04:59,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:59,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:59,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:59,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:59,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:59,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:59,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:04:59,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:59,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:59,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:59,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:59,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:59,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:59,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:59,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:59,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:04:59,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:59,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:04:59,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:59,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:59,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:59,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:59,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:04:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:59,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:59,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:59,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:04:59,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:59,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 09:04:59,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:59,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:59,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:59,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:04:59,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:59,953 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 09:04:59,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181447156] [2020-10-13 09:04:59,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:59,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:04:59,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236325166] [2020-10-13 09:04:59,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:04:59,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:59,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:04:59,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:04:59,957 INFO L87 Difference]: Start difference. First operand 1319 states and 1624 transitions. Second operand 5 states. [2020-10-13 09:05:06,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:06,536 INFO L93 Difference]: Finished difference Result 3308 states and 4197 transitions. [2020-10-13 09:05:06,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:06,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2020-10-13 09:05:06,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:06,549 INFO L225 Difference]: With dead ends: 3308 [2020-10-13 09:05:06,549 INFO L226 Difference]: Without dead ends: 1995 [2020-10-13 09:05:06,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:05:06,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2020-10-13 09:05:06,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1988. [2020-10-13 09:05:06,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2020-10-13 09:05:06,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 2518 transitions. [2020-10-13 09:05:06,606 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 2518 transitions. Word has length 323 [2020-10-13 09:05:06,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:06,607 INFO L479 AbstractCegarLoop]: Abstraction has 1988 states and 2518 transitions. [2020-10-13 09:05:06,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:06,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 2518 transitions. [2020-10-13 09:05:06,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-13 09:05:06,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:06,613 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:06,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:05:06,614 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:06,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:06,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1009675347, now seen corresponding path program 1 times [2020-10-13 09:05:06,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:06,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930759690] [2020-10-13 09:05:06,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:06,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:06,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:08,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:08,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:11,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:11,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-13 09:05:11,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:05:11,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4781 [2020-10-13 09:05:11,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:11,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 308 [2020-10-13 09:05:11,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:05:11,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:05:11,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:11,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:11,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:11,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:11,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:11,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:05:11,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:11,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:11,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:11,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:11,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:11,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:11,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:11,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:11,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:05:11,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:11,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:05:11,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:11,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:11,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:11,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:11,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:05:11,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:05:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:11,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:11,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:11,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 09:05:11,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:11,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 09:05:11,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:11,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:11,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:11,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:05:11,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:12,169 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-13 09:05:12,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930759690] [2020-10-13 09:05:12,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:12,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:05:12,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371579374] [2020-10-13 09:05:12,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:12,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:12,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:12,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:12,173 INFO L87 Difference]: Start difference. First operand 1988 states and 2518 transitions. Second operand 5 states. [2020-10-13 09:05:18,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:18,949 INFO L93 Difference]: Finished difference Result 4003 states and 5075 transitions. [2020-10-13 09:05:18,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:18,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 339 [2020-10-13 09:05:18,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:18,961 INFO L225 Difference]: With dead ends: 4003 [2020-10-13 09:05:18,961 INFO L226 Difference]: Without dead ends: 1992 [2020-10-13 09:05:18,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:05:18,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2020-10-13 09:05:19,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1988. [2020-10-13 09:05:19,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2020-10-13 09:05:19,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 2516 transitions. [2020-10-13 09:05:19,016 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 2516 transitions. Word has length 339 [2020-10-13 09:05:19,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:19,017 INFO L479 AbstractCegarLoop]: Abstraction has 1988 states and 2516 transitions. [2020-10-13 09:05:19,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:19,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 2516 transitions. [2020-10-13 09:05:19,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-13 09:05:19,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:19,024 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:19,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:05:19,024 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:19,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:19,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1670068864, now seen corresponding path program 1 times [2020-10-13 09:05:19,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:19,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817914359] [2020-10-13 09:05:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:19,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:19,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:20,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:23,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:23,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-13 09:05:23,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:05:23,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4108 [2020-10-13 09:05:23,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:23,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:23,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-10-13 09:05:23,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 09:05:23,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:23,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:23,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:23,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:23,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:23,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:23,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:05:23,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:23,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:23,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:23,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:23,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:23,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:23,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:23,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:23,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:05:23,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:23,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:05:23,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:23,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:23,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:23,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:23,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:23,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:05:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:23,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:23,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:23,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:05:23,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:23,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 09:05:23,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:23,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:23,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:23,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 09:05:23,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:23,603 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-13 09:05:23,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817914359] [2020-10-13 09:05:23,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:23,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:05:23,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095496683] [2020-10-13 09:05:23,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:23,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:23,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:23,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:23,612 INFO L87 Difference]: Start difference. First operand 1988 states and 2516 transitions. Second operand 5 states. [2020-10-13 09:05:33,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:33,690 INFO L93 Difference]: Finished difference Result 4922 states and 6438 transitions. [2020-10-13 09:05:33,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:33,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 342 [2020-10-13 09:05:33,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:33,708 INFO L225 Difference]: With dead ends: 4922 [2020-10-13 09:05:33,708 INFO L226 Difference]: Without dead ends: 2940 [2020-10-13 09:05:33,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:05:33,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-10-13 09:05:33,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2931. [2020-10-13 09:05:33,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2931 states. [2020-10-13 09:05:33,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2931 states to 2931 states and 3655 transitions. [2020-10-13 09:05:33,800 INFO L78 Accepts]: Start accepts. Automaton has 2931 states and 3655 transitions. Word has length 342 [2020-10-13 09:05:33,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:33,801 INFO L479 AbstractCegarLoop]: Abstraction has 2931 states and 3655 transitions. [2020-10-13 09:05:33,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:33,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2931 states and 3655 transitions. [2020-10-13 09:05:33,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-13 09:05:33,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:33,809 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:33,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:05:33,809 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:33,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:33,810 INFO L82 PathProgramCache]: Analyzing trace with hash 851089487, now seen corresponding path program 1 times [2020-10-13 09:05:33,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:33,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515242047] [2020-10-13 09:05:33,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:33,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:34,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:35,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:37,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:37,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-13 09:05:37,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:05:37,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3320 [2020-10-13 09:05:37,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:37,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:37,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 322 [2020-10-13 09:05:37,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 09:05:37,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:37,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:37,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:37,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:37,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:37,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:37,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:05:37,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:37,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:37,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:37,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:37,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:37,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:37,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:37,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:37,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:05:37,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:37,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:05:37,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:37,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:37,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:37,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:37,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:37,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:05:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:37,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:37,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:37,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:05:37,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:37,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:05:37,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:37,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:05:37,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-13 09:05:37,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515242047] [2020-10-13 09:05:37,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:37,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:05:37,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811042780] [2020-10-13 09:05:37,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:37,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:37,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:37,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:37,554 INFO L87 Difference]: Start difference. First operand 2931 states and 3655 transitions. Second operand 5 states. [2020-10-13 09:05:46,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:46,500 INFO L93 Difference]: Finished difference Result 6798 states and 8715 transitions. [2020-10-13 09:05:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:46,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 353 [2020-10-13 09:05:46,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:46,525 INFO L225 Difference]: With dead ends: 6798 [2020-10-13 09:05:46,525 INFO L226 Difference]: Without dead ends: 3873 [2020-10-13 09:05:46,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:05:46,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2020-10-13 09:05:46,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 3869. [2020-10-13 09:05:46,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3869 states. [2020-10-13 09:05:46,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3869 states to 3869 states and 4731 transitions. [2020-10-13 09:05:46,618 INFO L78 Accepts]: Start accepts. Automaton has 3869 states and 4731 transitions. Word has length 353 [2020-10-13 09:05:46,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:46,619 INFO L479 AbstractCegarLoop]: Abstraction has 3869 states and 4731 transitions. [2020-10-13 09:05:46,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:46,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3869 states and 4731 transitions. [2020-10-13 09:05:46,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-13 09:05:46,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:46,629 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, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:05:46,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:05:46,630 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:46,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:46,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1957517112, now seen corresponding path program 1 times [2020-10-13 09:05:46,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:46,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709613961] [2020-10-13 09:05:46,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:46,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:46,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:46,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:49,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:50,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:51,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:51,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-13 09:05:51,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:05:51,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 09:05:51,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:51,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:51,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 370 [2020-10-13 09:05:51,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:05:51,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:51,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:51,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:51,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:51,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:51,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:51,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:05:51,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:51,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:51,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:51,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:51,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:51,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:51,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:51,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:51,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:05:51,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:51,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:05:51,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:51,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:51,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:05:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:51,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:51,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:51,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:05:51,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:51,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:05:51,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:51,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:51,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-13 09:05:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:51,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:52,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:52,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:05:52,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:52,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:05:52,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:52,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:52,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:52,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:05:52,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 111 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-10-13 09:05:52,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709613961] [2020-10-13 09:05:52,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:52,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:05:52,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960151114] [2020-10-13 09:05:52,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:52,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:52,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:52,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:52,175 INFO L87 Difference]: Start difference. First operand 3869 states and 4731 transitions. Second operand 5 states. [2020-10-13 09:05:59,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:59,458 INFO L93 Difference]: Finished difference Result 7752 states and 9497 transitions. [2020-10-13 09:05:59,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:59,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 399 [2020-10-13 09:05:59,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:59,475 INFO L225 Difference]: With dead ends: 7752 [2020-10-13 09:05:59,476 INFO L226 Difference]: Without dead ends: 3873 [2020-10-13 09:05:59,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:05:59,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2020-10-13 09:05:59,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 3869. [2020-10-13 09:05:59,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3869 states. [2020-10-13 09:05:59,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3869 states to 3869 states and 4729 transitions. [2020-10-13 09:05:59,575 INFO L78 Accepts]: Start accepts. Automaton has 3869 states and 4729 transitions. Word has length 399 [2020-10-13 09:05:59,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:59,576 INFO L479 AbstractCegarLoop]: Abstraction has 3869 states and 4729 transitions. [2020-10-13 09:05:59,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:59,577 INFO L276 IsEmpty]: Start isEmpty. Operand 3869 states and 4729 transitions. [2020-10-13 09:05:59,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2020-10-13 09:05:59,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:59,583 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:05:59,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:05:59,584 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:59,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:59,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1307895564, now seen corresponding path program 1 times [2020-10-13 09:05:59,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:59,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306795449] [2020-10-13 09:05:59,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:59,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:59,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:59,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:00,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:00,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:02,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:02,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:02,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:04,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:04,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-13 09:06:04,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 09:06:04,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 09:06:04,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:04,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:04,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 370 [2020-10-13 09:06:04,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 09:06:04,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:04,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:04,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:04,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:04,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:04,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:04,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:06:04,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:04,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:04,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:04,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:04,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:04,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:04,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:04,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:04,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 09:06:04,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:04,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:06:04,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:04,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:04,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 09:06:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:04,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:05,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:05,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:06:05,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:05,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 09:06:05,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:05,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:05,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:05,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 09:06:05,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:05,122 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-13 09:06:05,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306795449] [2020-10-13 09:06:05,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:05,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:05,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695439357] [2020-10-13 09:06:05,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:05,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:05,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:05,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:05,124 INFO L87 Difference]: Start difference. First operand 3869 states and 4729 transitions. Second operand 5 states. [2020-10-13 09:06:12,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:12,975 INFO L93 Difference]: Finished difference Result 8980 states and 11157 transitions. [2020-10-13 09:06:12,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:12,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 403 [2020-10-13 09:06:12,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:12,998 INFO L225 Difference]: With dead ends: 8980 [2020-10-13 09:06:12,998 INFO L226 Difference]: Without dead ends: 5117 [2020-10-13 09:06:13,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 09:06:13,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5117 states. [2020-10-13 09:06:13,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5117 to 5112. [2020-10-13 09:06:13,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5112 states. [2020-10-13 09:06:13,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5112 states to 5112 states and 6335 transitions. [2020-10-13 09:06:13,116 INFO L78 Accepts]: Start accepts. Automaton has 5112 states and 6335 transitions. Word has length 403 [2020-10-13 09:06:13,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:13,117 INFO L479 AbstractCegarLoop]: Abstraction has 5112 states and 6335 transitions. [2020-10-13 09:06:13,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:13,117 INFO L276 IsEmpty]: Start isEmpty. Operand 5112 states and 6335 transitions. [2020-10-13 09:06:13,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-10-13 09:06:13,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:13,124 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:13,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:06:13,125 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:13,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:13,126 INFO L82 PathProgramCache]: Analyzing trace with hash 48128569, now seen corresponding path program 1 times [2020-10-13 09:06:13,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:13,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924794146] [2020-10-13 09:06:13,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:13,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:13,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:13,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:16,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:16,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:18,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:18,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-10-13 09:06:18,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:06:18,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 09:06:18,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 387 [2020-10-13 09:06:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 09:06:18,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:18,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:18,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:18,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:18,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:18,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:18,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:06:18,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:18,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:18,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:18,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:18,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:18,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:18,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:18,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:18,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:06:18,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:18,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:06:18,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:18,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:18,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:18,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:06:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:18,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:18,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:18,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:06:18,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:18,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:06:18,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:18,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:18,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-13 09:06:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:18,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:18,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:18,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 09:06:18,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:18,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:06:18,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 09:06:18,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 111 proven. 3 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-10-13 09:06:18,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924794146] [2020-10-13 09:06:18,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:18,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:18,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571140372] [2020-10-13 09:06:18,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:18,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:18,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:18,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:18,618 INFO L87 Difference]: Start difference. First operand 5112 states and 6335 transitions. Second operand 5 states. [2020-10-13 09:06:25,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:25,040 INFO L93 Difference]: Finished difference Result 13937 states and 17761 transitions. [2020-10-13 09:06:25,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:25,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 416 [2020-10-13 09:06:25,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:25,090 INFO L225 Difference]: With dead ends: 13937 [2020-10-13 09:06:25,090 INFO L226 Difference]: Without dead ends: 8831 [2020-10-13 09:06:25,101 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 09:06:25,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8831 states. [2020-10-13 09:06:25,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8831 to 8827. [2020-10-13 09:06:25,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8827 states. [2020-10-13 09:06:25,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8827 states to 8827 states and 10722 transitions. [2020-10-13 09:06:25,271 INFO L78 Accepts]: Start accepts. Automaton has 8827 states and 10722 transitions. Word has length 416 [2020-10-13 09:06:25,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:25,272 INFO L479 AbstractCegarLoop]: Abstraction has 8827 states and 10722 transitions. [2020-10-13 09:06:25,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:25,272 INFO L276 IsEmpty]: Start isEmpty. Operand 8827 states and 10722 transitions. [2020-10-13 09:06:25,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2020-10-13 09:06:25,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:25,281 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:25,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:06:25,282 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:25,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:25,282 INFO L82 PathProgramCache]: Analyzing trace with hash -435002549, now seen corresponding path program 1 times [2020-10-13 09:06:25,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:25,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85832333] [2020-10-13 09:06:25,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:25,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:25,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:25,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:30,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:30,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:30,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 435 [2020-10-13 09:06:30,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:06:30,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 09:06:30,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:30,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:30,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 392 [2020-10-13 09:06:30,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 09:06:30,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:30,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:30,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:30,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:30,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:30,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:30,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:06:30,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:30,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:30,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:30,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:30,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:30,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:30,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:06:30,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:30,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:06:30,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:30,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:30,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:30,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:30,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:06:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:30,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:30,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:30,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:06:30,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:30,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:06:30,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:30,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:30,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:30,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:30,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:30,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-13 09:06:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:30,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:30,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:30,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 09:06:30,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:30,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 09:06:30,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:30,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:30,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:30,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 09:06:30,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:30,770 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 111 proven. 3 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-13 09:06:30,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85832333] [2020-10-13 09:06:30,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:30,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:30,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522406383] [2020-10-13 09:06:30,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:30,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:30,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:30,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:30,772 INFO L87 Difference]: Start difference. First operand 8827 states and 10722 transitions. Second operand 5 states. [2020-10-13 09:06:40,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:40,245 INFO L93 Difference]: Finished difference Result 19815 states and 24738 transitions. [2020-10-13 09:06:40,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:40,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 421 [2020-10-13 09:06:40,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:40,286 INFO L225 Difference]: With dead ends: 19815 [2020-10-13 09:06:40,286 INFO L226 Difference]: Without dead ends: 10994 [2020-10-13 09:06:40,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:06:40,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10994 states. [2020-10-13 09:06:40,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10994 to 10990. [2020-10-13 09:06:40,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10990 states. [2020-10-13 09:06:40,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10990 states to 10990 states and 13416 transitions. [2020-10-13 09:06:40,522 INFO L78 Accepts]: Start accepts. Automaton has 10990 states and 13416 transitions. Word has length 421 [2020-10-13 09:06:40,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:40,523 INFO L479 AbstractCegarLoop]: Abstraction has 10990 states and 13416 transitions. [2020-10-13 09:06:40,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:40,524 INFO L276 IsEmpty]: Start isEmpty. Operand 10990 states and 13416 transitions. [2020-10-13 09:06:40,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-10-13 09:06:40,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:40,536 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:40,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:06:40,536 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:40,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:40,537 INFO L82 PathProgramCache]: Analyzing trace with hash -2070070819, now seen corresponding path program 1 times [2020-10-13 09:06:40,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:40,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466010629] [2020-10-13 09:06:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:40,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:40,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:41,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:42,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:43,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:43,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:45,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:45,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 435 [2020-10-13 09:06:45,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:06:45,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 09:06:45,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:45,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:45,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 392 [2020-10-13 09:06:45,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:06:45,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:45,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:45,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:45,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:45,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:45,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:45,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:06:45,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:45,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:45,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:45,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:45,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:45,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:45,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:45,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:45,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 09:06:45,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:45,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:06:45,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:45,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:45,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:45,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:45,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:46,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 09:06:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:46,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:46,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:46,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 09:06:46,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:46,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 09:06:46,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 09:06:46,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:46,338 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-13 09:06:46,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466010629] [2020-10-13 09:06:46,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:46,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:46,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939672138] [2020-10-13 09:06:46,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:46,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:46,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:46,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:46,341 INFO L87 Difference]: Start difference. First operand 10990 states and 13416 transitions. Second operand 5 states. [2020-10-13 09:06:53,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:53,389 INFO L93 Difference]: Finished difference Result 22001 states and 26898 transitions. [2020-10-13 09:06:53,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:53,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 423 [2020-10-13 09:06:53,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:53,426 INFO L225 Difference]: With dead ends: 22001 [2020-10-13 09:06:53,427 INFO L226 Difference]: Without dead ends: 10994 [2020-10-13 09:06:53,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:06:53,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10994 states. [2020-10-13 09:06:53,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10994 to 10990. [2020-10-13 09:06:53,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10990 states. [2020-10-13 09:06:53,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10990 states to 10990 states and 13407 transitions. [2020-10-13 09:06:53,645 INFO L78 Accepts]: Start accepts. Automaton has 10990 states and 13407 transitions. Word has length 423 [2020-10-13 09:06:53,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:53,646 INFO L479 AbstractCegarLoop]: Abstraction has 10990 states and 13407 transitions. [2020-10-13 09:06:53,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:53,646 INFO L276 IsEmpty]: Start isEmpty. Operand 10990 states and 13407 transitions. [2020-10-13 09:06:53,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2020-10-13 09:06:53,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:53,657 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:06:53,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:06:53,658 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:53,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:53,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1536256369, now seen corresponding path program 1 times [2020-10-13 09:06:53,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:53,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374422701] [2020-10-13 09:06:53,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:53,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:53,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:54,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:55,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:56,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:58,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:58,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-10-13 09:06:58,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:06:58,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-13 09:06:58,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 429 [2020-10-13 09:06:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 09:06:58,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:58,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:58,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:58,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:58,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:58,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:58,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:06:58,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:58,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:58,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:58,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:58,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:58,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:58,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:59,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:59,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:06:59,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:59,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:06:59,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:59,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:59,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:06:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:59,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:59,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:59,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 09:06:59,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:59,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:06:59,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:59,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:59,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-13 09:06:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:59,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:59,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:59,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 09:06:59,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:59,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 09:06:59,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:59,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:59,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 09:06:59,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:59,442 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 111 proven. 3 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-10-13 09:06:59,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374422701] [2020-10-13 09:06:59,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:59,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:06:59,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846090122] [2020-10-13 09:06:59,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:06:59,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:59,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:06:59,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:06:59,444 INFO L87 Difference]: Start difference. First operand 10990 states and 13407 transitions. Second operand 6 states. [2020-10-13 09:07:08,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:07:08,650 INFO L93 Difference]: Finished difference Result 21990 states and 26872 transitions. [2020-10-13 09:07:08,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:07:08,658 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 458 [2020-10-13 09:07:08,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:07:08,706 INFO L225 Difference]: With dead ends: 21990 [2020-10-13 09:07:08,706 INFO L226 Difference]: Without dead ends: 10994 [2020-10-13 09:07:08,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:07:08,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10994 states. [2020-10-13 09:07:08,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10994 to 10990. [2020-10-13 09:07:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10990 states. [2020-10-13 09:07:08,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10990 states to 10990 states and 13395 transitions. [2020-10-13 09:07:08,949 INFO L78 Accepts]: Start accepts. Automaton has 10990 states and 13395 transitions. Word has length 458 [2020-10-13 09:07:08,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:07:08,950 INFO L479 AbstractCegarLoop]: Abstraction has 10990 states and 13395 transitions. [2020-10-13 09:07:08,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:07:08,950 INFO L276 IsEmpty]: Start isEmpty. Operand 10990 states and 13395 transitions. [2020-10-13 09:07:08,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-13 09:07:08,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:07:08,965 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:07:08,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:07:08,966 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:07:08,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:07:08,966 INFO L82 PathProgramCache]: Analyzing trace with hash -576408732, now seen corresponding path program 1 times [2020-10-13 09:07:08,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:07:08,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096351673] [2020-10-13 09:07:08,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:07:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:09,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:09,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:10,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:11,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:14,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:14,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-13 09:07:14,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:07:14,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 09:07:14,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:07:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-13 09:07:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:07:14,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:14,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:07:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:14,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:14,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:14,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:07:14,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:14,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:07:14,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:14,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:14,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:07:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:14,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:14,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:14,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:07:14,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:14,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-13 09:07:14,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:14,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:07:14,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-13 09:07:14,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:14,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:07:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:14,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:14,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:14,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:07:14,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:14,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:07:14,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:14,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:07:14,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:07:14,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:07:14,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:14,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-13 09:07:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:14,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:14,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:14,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:07:14,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:14,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:07:14,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:14,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:14,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 09:07:14,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:14,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:14,866 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 189 proven. 79 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-13 09:07:14,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096351673] [2020-10-13 09:07:14,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:07:14,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:07:14,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448538031] [2020-10-13 09:07:14,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:07:14,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:07:14,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:07:14,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:07:14,868 INFO L87 Difference]: Start difference. First operand 10990 states and 13395 transitions. Second operand 7 states. [2020-10-13 09:07:22,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:07:22,582 INFO L93 Difference]: Finished difference Result 22388 states and 27449 transitions. [2020-10-13 09:07:22,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:07:22,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 465 [2020-10-13 09:07:22,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:07:22,619 INFO L225 Difference]: With dead ends: 22388 [2020-10-13 09:07:22,620 INFO L226 Difference]: Without dead ends: 11404 [2020-10-13 09:07:22,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:07:22,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11404 states. [2020-10-13 09:07:22,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11404 to 11392. [2020-10-13 09:07:22,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11392 states. [2020-10-13 09:07:22,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11392 states to 11392 states and 13543 transitions. [2020-10-13 09:07:22,857 INFO L78 Accepts]: Start accepts. Automaton has 11392 states and 13543 transitions. Word has length 465 [2020-10-13 09:07:22,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:07:22,858 INFO L479 AbstractCegarLoop]: Abstraction has 11392 states and 13543 transitions. [2020-10-13 09:07:22,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:07:22,859 INFO L276 IsEmpty]: Start isEmpty. Operand 11392 states and 13543 transitions. [2020-10-13 09:07:22,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-13 09:07:22,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:07:22,871 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:22,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:07:22,874 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:07:22,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:07:22,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1126590239, now seen corresponding path program 1 times [2020-10-13 09:07:22,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:07:22,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759969912] [2020-10-13 09:07:22,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:07:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:23,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:23,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:23,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:24,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:26,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:27,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:28,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:28,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 477 [2020-10-13 09:07:28,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:07:28,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 09:07:28,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:28,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:07:28,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 434 [2020-10-13 09:07:28,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 09:07:28,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:28,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:07:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:28,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:28,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:28,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:07:28,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:28,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:07:28,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:28,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:28,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:28,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:28,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:28,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:07:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:28,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:28,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:28,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 09:07:28,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:28,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:07:28,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:28,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:28,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:28,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:28,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:28,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 09:07:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:28,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:28,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:28,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 09:07:28,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:28,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-13 09:07:28,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:07:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 09:07:28,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:28,698 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-10-13 09:07:28,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759969912] [2020-10-13 09:07:28,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:07:28,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:07:28,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712588208] [2020-10-13 09:07:28,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:07:28,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:07:28,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:07:28,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:07:28,704 INFO L87 Difference]: Start difference. First operand 11392 states and 13543 transitions. Second operand 5 states. [2020-10-13 09:07:37,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:07:37,161 INFO L93 Difference]: Finished difference Result 22791 states and 27141 transitions. [2020-10-13 09:07:37,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:07:37,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 465 [2020-10-13 09:07:37,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:07:37,200 INFO L225 Difference]: With dead ends: 22791 [2020-10-13 09:07:37,200 INFO L226 Difference]: Without dead ends: 11396 [2020-10-13 09:07:37,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:07:37,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11396 states. [2020-10-13 09:07:37,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11396 to 11392. [2020-10-13 09:07:37,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11392 states. [2020-10-13 09:07:37,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11392 states to 11392 states and 13513 transitions. [2020-10-13 09:07:37,423 INFO L78 Accepts]: Start accepts. Automaton has 11392 states and 13513 transitions. Word has length 465 [2020-10-13 09:07:37,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:07:37,423 INFO L479 AbstractCegarLoop]: Abstraction has 11392 states and 13513 transitions. [2020-10-13 09:07:37,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:07:37,424 INFO L276 IsEmpty]: Start isEmpty. Operand 11392 states and 13513 transitions. [2020-10-13 09:07:37,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2020-10-13 09:07:37,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:07:37,442 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:07:37,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:07:37,442 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:07:37,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:07:37,442 INFO L82 PathProgramCache]: Analyzing trace with hash -899446891, now seen corresponding path program 1 times [2020-10-13 09:07:37,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:07:37,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885791552] [2020-10-13 09:07:37,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:07:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:37,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:37,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:38,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:42,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:42,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 524 [2020-10-13 09:07:42,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:07:42,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4848 [2020-10-13 09:07:42,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:42,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:07:42,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-13 09:07:42,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 09:07:42,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:42,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:07:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:42,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:42,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:42,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:07:42,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:42,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:07:42,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:42,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:42,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:42,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:42,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0