/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/Problem12_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:15:41,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:15:41,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:15:41,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:15:41,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:15:41,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:15:41,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:15:41,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:15:41,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:15:41,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:15:41,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:15:41,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:15:41,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:15:41,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:15:41,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:15:41,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:15:41,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:15:41,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:15:41,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:15:41,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:15:41,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:15:41,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:15:41,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:15:41,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:15:41,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:15:41,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:15:41,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:15:41,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:15:41,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:15:41,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:15:41,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:15:41,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:15:41,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:15:41,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:15:41,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:15:41,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:15:41,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:15:41,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:15:41,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:15:41,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:15:41,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:15:41,124 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:15:41,177 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:15:41,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:15:41,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:15:41,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:15:41,179 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:15:41,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:15:41,180 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:15:41,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:15:41,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:15:41,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:15:41,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:15:41,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:15:41,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:15:41,181 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:15:41,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:15:41,182 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:15:41,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:15:41,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:15:41,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:15:41,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:15:41,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:15:41,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:15:41,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:15:41,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:15:41,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:15:41,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:15:41,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:15:41,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:15:41,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:15:41,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:15:41,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:15:41,505 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:15:41,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:15:41,517 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:15:41,517 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:15:41,518 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label10.c [2020-10-13 08:15:41,592 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94fa8ab3f/4b0904c788c44ebfac525ee52415eb4c/FLAG70941f71b [2020-10-13 08:15:42,342 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:15:42,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label10.c [2020-10-13 08:15:42,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94fa8ab3f/4b0904c788c44ebfac525ee52415eb4c/FLAG70941f71b [2020-10-13 08:15:42,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94fa8ab3f/4b0904c788c44ebfac525ee52415eb4c [2020-10-13 08:15:42,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:15:42,440 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:15:42,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:15:42,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:15:42,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:15:42,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:15:42" (1/1) ... [2020-10-13 08:15:42,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab41b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:42, skipping insertion in model container [2020-10-13 08:15:42,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:15:42" (1/1) ... [2020-10-13 08:15:42,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:15:42,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:15:44,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:15:44,062 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:15:44,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:15:44,771 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:15:44,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:44 WrapperNode [2020-10-13 08:15:44,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:15:44,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:15:44,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:15:44,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:15:44,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:44" (1/1) ... [2020-10-13 08:15:44,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:44" (1/1) ... [2020-10-13 08:15:44,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:44" (1/1) ... [2020-10-13 08:15:44,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:44" (1/1) ... [2020-10-13 08:15:44,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:44" (1/1) ... [2020-10-13 08:15:45,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:44" (1/1) ... [2020-10-13 08:15:45,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:44" (1/1) ... [2020-10-13 08:15:45,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:15:45,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:15:45,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:15:45,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:15:45,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:15:45,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:15:45,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:15:45,158 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:15:45,158 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:15:45,159 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:15:45,159 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:15:45,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:15:45,159 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:15:45,159 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:15:45,159 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:15:45,160 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:15:45,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:15:45,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:15:45,160 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:15:45,160 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:15:45,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:15:45,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:15:49,643 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:15:49,643 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:15:49,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:15:49 BoogieIcfgContainer [2020-10-13 08:15:49,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:15:49,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:15:49,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:15:49,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:15:49,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:15:42" (1/3) ... [2020-10-13 08:15:49,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c56394d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:15:49, skipping insertion in model container [2020-10-13 08:15:49,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:44" (2/3) ... [2020-10-13 08:15:49,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c56394d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:15:49, skipping insertion in model container [2020-10-13 08:15:49,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:15:49" (3/3) ... [2020-10-13 08:15:49,667 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label10.c [2020-10-13 08:15:49,677 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:15:49,688 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:15:49,702 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:15:49,731 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:15:49,731 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:15:49,731 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:15:49,732 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:15:49,732 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:15:49,732 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:15:49,732 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:15:49,732 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:15:49,780 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:15:49,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 08:15:49,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:49,788 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] [2020-10-13 08:15:49,789 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:49,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:49,795 INFO L82 PathProgramCache]: Analyzing trace with hash 384114234, now seen corresponding path program 1 times [2020-10-13 08:15:49,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:49,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119998824] [2020-10-13 08:15:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:50,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:50,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:50,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 08:15:50,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:50,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-13 08:15:50,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:50,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:15:50,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:15:50,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:15:50,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:15:50,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:50,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:50,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:50,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:50,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:50,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:15:50,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:50,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:50,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:50,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:15:50,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:50,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:15:50,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119998824] [2020-10-13 08:15:50,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:15:50,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:15:50,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601367746] [2020-10-13 08:15:50,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:15:50,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:50,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:15:50,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:15:50,524 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-13 08:15:57,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:57,899 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-13 08:15:57,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:15:57,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-13 08:15:57,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:57,963 INFO L225 Difference]: With dead ends: 2471 [2020-10-13 08:15:57,964 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:15:57,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:15:58,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:15:58,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:15:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:15:58,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2725 transitions. [2020-10-13 08:15:58,228 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2725 transitions. Word has length 33 [2020-10-13 08:15:58,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:58,229 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2725 transitions. [2020-10-13 08:15:58,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:15:58,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2725 transitions. [2020-10-13 08:15:58,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 08:15:58,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:58,240 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:15:58,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:15:58,241 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:58,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:58,241 INFO L82 PathProgramCache]: Analyzing trace with hash -2121288409, now seen corresponding path program 1 times [2020-10-13 08:15:58,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:58,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175997148] [2020-10-13 08:15:58,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:58,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:58,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:59,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:59,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:59,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 08:15:59,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:15:59,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 888 [2020-10-13 08:15:59,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:59,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:59,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 08:15:59,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 08:15:59,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:15:59,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:59,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:59,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:59,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:59,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:59,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:15:59,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:59,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:59,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:15:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:59,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:59,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:59,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:15:59,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:59,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 08:15:59,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:59,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:15:59,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:59,404 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:15:59,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175997148] [2020-10-13 08:15:59,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:15:59,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:15:59,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843552779] [2020-10-13 08:15:59,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:15:59,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:59,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:15:59,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:15:59,408 INFO L87 Difference]: Start difference. First operand 1553 states and 2725 transitions. Second operand 5 states. [2020-10-13 08:16:08,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:16:08,472 INFO L93 Difference]: Finished difference Result 4672 states and 8262 transitions. [2020-10-13 08:16:08,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:16:08,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 08:16:08,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:16:08,490 INFO L225 Difference]: With dead ends: 4672 [2020-10-13 08:16:08,490 INFO L226 Difference]: Without dead ends: 3125 [2020-10-13 08:16:08,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:16:08,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-13 08:16:08,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3109. [2020-10-13 08:16:08,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-13 08:16:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4681 transitions. [2020-10-13 08:16:08,563 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4681 transitions. Word has length 102 [2020-10-13 08:16:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:16:08,563 INFO L479 AbstractCegarLoop]: Abstraction has 3109 states and 4681 transitions. [2020-10-13 08:16:08,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:16:08,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4681 transitions. [2020-10-13 08:16:08,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 08:16:08,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:16:08,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:16:08,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:16:08,567 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:16:08,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:16:08,568 INFO L82 PathProgramCache]: Analyzing trace with hash 741420226, now seen corresponding path program 1 times [2020-10-13 08:16:08,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:16:08,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179584138] [2020-10-13 08:16:08,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:16:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:08,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:09,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:09,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:09,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 08:16:09,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:16:09,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 681 [2020-10-13 08:16:09,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:09,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:16:09,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 08:16:09,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 08:16:09,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:09,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:16:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:09,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:09,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:09,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:16:09,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:09,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:16:09,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:09,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:09,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:09,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:09,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:16:09,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:16:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:09,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:09,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:09,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:16:09,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:09,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 08:16:09,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:09,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:16:09,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:09,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:16:09,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:16:09,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179584138] [2020-10-13 08:16:09,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:16:09,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:16:09,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506434677] [2020-10-13 08:16:09,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:16:09,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:16:09,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:16:09,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:16:09,514 INFO L87 Difference]: Start difference. First operand 3109 states and 4681 transitions. Second operand 5 states. [2020-10-13 08:16:22,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:16:22,755 INFO L93 Difference]: Finished difference Result 9330 states and 14245 transitions. [2020-10-13 08:16:22,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:16:22,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 08:16:22,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:16:22,788 INFO L225 Difference]: With dead ends: 9330 [2020-10-13 08:16:22,788 INFO L226 Difference]: Without dead ends: 6227 [2020-10-13 08:16:22,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:16:22,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6227 states. [2020-10-13 08:16:22,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6227 to 6223. [2020-10-13 08:16:22,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6223 states. [2020-10-13 08:16:22,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 8474 transitions. [2020-10-13 08:16:22,931 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 8474 transitions. Word has length 103 [2020-10-13 08:16:22,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:16:22,932 INFO L479 AbstractCegarLoop]: Abstraction has 6223 states and 8474 transitions. [2020-10-13 08:16:22,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:16:22,932 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 8474 transitions. [2020-10-13 08:16:22,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 08:16:22,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:16:22,935 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:16:22,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:16:22,936 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:16:22,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:16:22,936 INFO L82 PathProgramCache]: Analyzing trace with hash -655537381, now seen corresponding path program 1 times [2020-10-13 08:16:22,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:16:22,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769598426] [2020-10-13 08:16:22,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:16:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:22,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:23,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:23,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:23,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:23,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:16:23,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:16:23,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-13 08:16:23,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:23,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:16:23,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 08:16:23,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 08:16:23,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-13 08:16:23,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:16:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:23,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:23,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:23,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:16:23,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:23,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:16:23,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:23,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:23,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:23,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:23,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:23,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:16:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:23,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:23,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:23,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:16:23,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:23,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 08:16:23,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:23,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:16:23,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:16:23,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:23,879 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:16:23,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769598426] [2020-10-13 08:16:23,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:16:23,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:16:23,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143875919] [2020-10-13 08:16:23,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:16:23,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:16:23,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:16:23,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:16:23,887 INFO L87 Difference]: Start difference. First operand 6223 states and 8474 transitions. Second operand 5 states. [2020-10-13 08:16:34,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:16:34,671 INFO L93 Difference]: Finished difference Result 18653 states and 25928 transitions. [2020-10-13 08:16:34,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:16:34,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 08:16:34,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:16:34,721 INFO L225 Difference]: With dead ends: 18653 [2020-10-13 08:16:34,721 INFO L226 Difference]: Without dead ends: 12436 [2020-10-13 08:16:34,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 08:16:34,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12436 states. [2020-10-13 08:16:35,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12436 to 12432. [2020-10-13 08:16:35,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12432 states. [2020-10-13 08:16:35,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12432 states to 12432 states and 16167 transitions. [2020-10-13 08:16:35,073 INFO L78 Accepts]: Start accepts. Automaton has 12432 states and 16167 transitions. Word has length 112 [2020-10-13 08:16:35,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:16:35,075 INFO L479 AbstractCegarLoop]: Abstraction has 12432 states and 16167 transitions. [2020-10-13 08:16:35,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:16:35,075 INFO L276 IsEmpty]: Start isEmpty. Operand 12432 states and 16167 transitions. [2020-10-13 08:16:35,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 08:16:35,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:16:35,080 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:16:35,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:16:35,081 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:16:35,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:16:35,081 INFO L82 PathProgramCache]: Analyzing trace with hash 830986246, now seen corresponding path program 1 times [2020-10-13 08:16:35,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:16:35,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21492579] [2020-10-13 08:16:35,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:16:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:35,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:35,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:35,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:35,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 08:16:35,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:16:35,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 713 [2020-10-13 08:16:35,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:35,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:16:35,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 08:16:35,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 08:16:35,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:35,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:16:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:35,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:35,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:35,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:16:35,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:35,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:16:35,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:35,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:35,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:35,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:16:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:35,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:36,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:36,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:16:36,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:36,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 08:16:36,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:36,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:16:36,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:36,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 08:16:36,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:16:36,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21492579] [2020-10-13 08:16:36,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:16:36,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:16:36,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452672026] [2020-10-13 08:16:36,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:16:36,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:16:36,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:16:36,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:16:36,049 INFO L87 Difference]: Start difference. First operand 12432 states and 16167 transitions. Second operand 5 states. [2020-10-13 08:16:46,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:16:46,144 INFO L93 Difference]: Finished difference Result 35715 states and 47768 transitions. [2020-10-13 08:16:46,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:16:46,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 08:16:46,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:16:46,227 INFO L225 Difference]: With dead ends: 35715 [2020-10-13 08:16:46,227 INFO L226 Difference]: Without dead ends: 23289 [2020-10-13 08:16:46,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:16:46,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23289 states. [2020-10-13 08:16:46,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23289 to 23285. [2020-10-13 08:16:46,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23285 states. [2020-10-13 08:16:46,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23285 states to 23285 states and 30529 transitions. [2020-10-13 08:16:46,775 INFO L78 Accepts]: Start accepts. Automaton has 23285 states and 30529 transitions. Word has length 121 [2020-10-13 08:16:46,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:16:46,776 INFO L479 AbstractCegarLoop]: Abstraction has 23285 states and 30529 transitions. [2020-10-13 08:16:46,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:16:46,776 INFO L276 IsEmpty]: Start isEmpty. Operand 23285 states and 30529 transitions. [2020-10-13 08:16:46,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-13 08:16:46,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:16:46,786 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:16:46,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:16:46,787 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:16:46,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:16:46,787 INFO L82 PathProgramCache]: Analyzing trace with hash 614639726, now seen corresponding path program 1 times [2020-10-13 08:16:46,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:16:46,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095286676] [2020-10-13 08:16:46,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:16:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:46,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:46,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:48,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:48,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:50,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:50,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 08:16:50,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:16:50,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3923 [2020-10-13 08:16:50,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:50,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:16:50,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-13 08:16:50,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 08:16:50,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:50,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:16:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:50,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:50,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:50,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:16:50,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:50,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:16:50,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:50,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:50,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:50,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:50,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:50,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:16:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:50,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:50,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:50,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:16:50,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:50,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 08:16:50,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:50,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:50,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 08:16:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:50,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:50,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:50,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 08:16:50,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:50,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 08:16:50,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:50,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:16:50,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:50,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 08:16:50,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:51,065 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 08:16:51,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095286676] [2020-10-13 08:16:51,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:16:51,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:16:51,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991799135] [2020-10-13 08:16:51,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:16:51,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:16:51,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:16:51,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:16:51,069 INFO L87 Difference]: Start difference. First operand 23285 states and 30529 transitions. Second operand 5 states. [2020-10-13 08:17:03,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:03,706 INFO L93 Difference]: Finished difference Result 58198 states and 78285 transitions. [2020-10-13 08:17:03,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:17:03,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-13 08:17:03,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:03,826 INFO L225 Difference]: With dead ends: 58198 [2020-10-13 08:17:03,827 INFO L226 Difference]: Without dead ends: 34919 [2020-10-13 08:17:03,898 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 08:17:03,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34919 states. [2020-10-13 08:17:04,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34919 to 34915. [2020-10-13 08:17:04,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34915 states. [2020-10-13 08:17:04,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34915 states to 34915 states and 46305 transitions. [2020-10-13 08:17:04,839 INFO L78 Accepts]: Start accepts. Automaton has 34915 states and 46305 transitions. Word has length 217 [2020-10-13 08:17:04,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:04,840 INFO L479 AbstractCegarLoop]: Abstraction has 34915 states and 46305 transitions. [2020-10-13 08:17:04,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:17:04,840 INFO L276 IsEmpty]: Start isEmpty. Operand 34915 states and 46305 transitions. [2020-10-13 08:17:04,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-13 08:17:04,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:04,861 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:17:04,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:17:04,861 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:04,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:04,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1723629394, now seen corresponding path program 1 times [2020-10-13 08:17:04,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:04,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915555740] [2020-10-13 08:17:04,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:04,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:05,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:05,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-13 08:17:05,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:05,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-13 08:17:05,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:05,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:17:05,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:17:05,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-13 08:17:05,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:05,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:05,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:05,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:05,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:05,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:05,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:17:05,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:05,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:05,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:05,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:17:05,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:05,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:17:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:05,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:06,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:06,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:17:06,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:06,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-13 08:17:06,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:06,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:06,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:17:06,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-13 08:17:06,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:17:06,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915555740] [2020-10-13 08:17:06,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:17:06,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 08:17:06,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582712067] [2020-10-13 08:17:06,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:17:06,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:06,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:17:06,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:17:06,828 INFO L87 Difference]: Start difference. First operand 34915 states and 46305 transitions. Second operand 7 states. [2020-10-13 08:17:20,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:20,576 INFO L93 Difference]: Finished difference Result 83312 states and 114134 transitions. [2020-10-13 08:17:20,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:17:20,577 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 301 [2020-10-13 08:17:20,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:20,746 INFO L225 Difference]: With dead ends: 83312 [2020-10-13 08:17:20,746 INFO L226 Difference]: Without dead ends: 48403 [2020-10-13 08:17:20,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:17:20,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48403 states. [2020-10-13 08:17:21,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48403 to 46863. [2020-10-13 08:17:21,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46863 states. [2020-10-13 08:17:21,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46863 states to 46863 states and 62565 transitions. [2020-10-13 08:17:21,960 INFO L78 Accepts]: Start accepts. Automaton has 46863 states and 62565 transitions. Word has length 301 [2020-10-13 08:17:21,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:21,961 INFO L479 AbstractCegarLoop]: Abstraction has 46863 states and 62565 transitions. [2020-10-13 08:17:21,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:17:21,961 INFO L276 IsEmpty]: Start isEmpty. Operand 46863 states and 62565 transitions. [2020-10-13 08:17:21,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2020-10-13 08:17:21,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:21,995 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:17:21,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:17:21,995 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:21,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:21,996 INFO L82 PathProgramCache]: Analyzing trace with hash 758711670, now seen corresponding path program 1 times [2020-10-13 08:17:21,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:21,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707132916] [2020-10-13 08:17:21,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:22,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:22,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:24,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:24,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-13 08:17:24,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:17:24,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2019 [2020-10-13 08:17:24,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:24,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:17:24,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:17:24,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 08:17:24,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:24,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:24,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:24,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:24,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:24,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:24,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:17:24,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:24,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:24,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:24,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:17:24,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:24,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:17:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:24,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:24,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:24,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:17:24,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:24,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-13 08:17:24,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:17:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 08:17:24,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:24,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 08:17:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:24,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:24,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:24,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:17:24,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:24,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-13 08:17:24,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:24,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:24,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 266 [2020-10-13 08:17:24,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:24,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 52 proven. 97 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:17:25,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707132916] [2020-10-13 08:17:25,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:17:25,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:17:25,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312944602] [2020-10-13 08:17:25,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:17:25,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:25,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:17:25,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:17:25,340 INFO L87 Difference]: Start difference. First operand 46863 states and 62565 transitions. Second operand 8 states. [2020-10-13 08:17:44,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:44,355 INFO L93 Difference]: Finished difference Result 114641 states and 161673 transitions. [2020-10-13 08:17:44,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 08:17:44,356 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 403 [2020-10-13 08:17:44,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:44,616 INFO L225 Difference]: With dead ends: 114641 [2020-10-13 08:17:44,617 INFO L226 Difference]: Without dead ends: 67784 [2020-10-13 08:17:44,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 08:17:44,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67784 states. [2020-10-13 08:17:45,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67784 to 63090. [2020-10-13 08:17:45,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63090 states. [2020-10-13 08:17:45,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63090 states to 63090 states and 84641 transitions. [2020-10-13 08:17:45,861 INFO L78 Accepts]: Start accepts. Automaton has 63090 states and 84641 transitions. Word has length 403 [2020-10-13 08:17:45,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:45,862 INFO L479 AbstractCegarLoop]: Abstraction has 63090 states and 84641 transitions. [2020-10-13 08:17:45,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:17:45,862 INFO L276 IsEmpty]: Start isEmpty. Operand 63090 states and 84641 transitions. [2020-10-13 08:17:45,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2020-10-13 08:17:45,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:45,903 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:17:45,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:17:45,903 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:45,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:45,904 INFO L82 PathProgramCache]: Analyzing trace with hash -122650289, now seen corresponding path program 1 times [2020-10-13 08:17:45,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:45,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082981739] [2020-10-13 08:17:45,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:46,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:47,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:48,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:50,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:50,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 492 [2020-10-13 08:17:50,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:17:50,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4029 [2020-10-13 08:17:50,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:50,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:50,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:17:50,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:17:50,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:50,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:50,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:50,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:50,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:50,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:50,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:17:50,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:50,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:50,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:50,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:50,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:50,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:17:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:50,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:50,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:50,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:17:50,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:50,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 08:17:50,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:17:50,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:50,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:17:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:50,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:50,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:50,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:50,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:17:50,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:17:50,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-13 08:17:50,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:50,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:50,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:17:50,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 08:17:50,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:50,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-13 08:17:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:50,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:50,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:50,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:17:50,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:50,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-13 08:17:50,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:50,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:50,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 266 [2020-10-13 08:17:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:50,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:51,381 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 154 proven. 101 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-13 08:17:51,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082981739] [2020-10-13 08:17:51,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:17:51,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:17:51,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124476458] [2020-10-13 08:17:51,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:17:51,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:51,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:17:51,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:17:51,394 INFO L87 Difference]: Start difference. First operand 63090 states and 84641 transitions. Second operand 7 states. [2020-10-13 08:18:07,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:07,651 INFO L93 Difference]: Finished difference Result 127740 states and 177505 transitions. [2020-10-13 08:18:07,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:18:07,653 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 478 [2020-10-13 08:18:07,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:07,901 INFO L225 Difference]: With dead ends: 127740 [2020-10-13 08:18:07,902 INFO L226 Difference]: Without dead ends: 64508 [2020-10-13 08:18:08,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:18:08,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64508 states. [2020-10-13 08:18:09,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64508 to 64203. [2020-10-13 08:18:09,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64203 states. [2020-10-13 08:18:09,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64203 states to 64203 states and 84588 transitions. [2020-10-13 08:18:09,275 INFO L78 Accepts]: Start accepts. Automaton has 64203 states and 84588 transitions. Word has length 478 [2020-10-13 08:18:09,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:09,276 INFO L479 AbstractCegarLoop]: Abstraction has 64203 states and 84588 transitions. [2020-10-13 08:18:09,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:18:09,276 INFO L276 IsEmpty]: Start isEmpty. Operand 64203 states and 84588 transitions. [2020-10-13 08:18:09,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-10-13 08:18:09,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:09,331 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:18:09,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:18:09,331 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:09,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:09,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1696926774, now seen corresponding path program 1 times [2020-10-13 08:18:09,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:09,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700081968] [2020-10-13 08:18:09,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:09,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:10,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:12,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:12,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 511 [2020-10-13 08:18:12,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:18:12,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2839 [2020-10-13 08:18:12,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:12,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:18:12,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:18:12,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-13 08:18:12,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:12,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:12,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:12,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:12,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:12,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:12,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:18:12,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:12,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:12,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:12,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:18:12,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:12,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:12,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:12,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:12,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 08:18:12,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:12,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-13 08:18:12,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:12,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:12,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:18:12,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-13 08:18:12,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:13,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-13 08:18:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:13,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:13,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:13,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:18:13,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:13,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-13 08:18:13,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 266 [2020-10-13 08:18:13,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:13,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:13,773 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 52 proven. 193 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:18:13,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700081968] [2020-10-13 08:18:13,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:13,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:18:13,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038944756] [2020-10-13 08:18:13,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:18:13,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:13,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:18:13,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:18:13,776 INFO L87 Difference]: Start difference. First operand 64203 states and 84588 transitions. Second operand 7 states. [2020-10-13 08:18:14,077 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-10-13 08:18:30,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:30,122 INFO L93 Difference]: Finished difference Result 149397 states and 212599 transitions. [2020-10-13 08:18:30,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:18:30,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 499 [2020-10-13 08:18:30,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:30,347 INFO L225 Difference]: With dead ends: 149397 [2020-10-13 08:18:30,347 INFO L226 Difference]: Without dead ends: 84431 [2020-10-13 08:18:30,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:18:30,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84431 states. [2020-10-13 08:18:31,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84431 to 79844. [2020-10-13 08:18:31,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79844 states. [2020-10-13 08:18:32,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79844 states to 79844 states and 102968 transitions. [2020-10-13 08:18:32,231 INFO L78 Accepts]: Start accepts. Automaton has 79844 states and 102968 transitions. Word has length 499 [2020-10-13 08:18:32,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:32,232 INFO L479 AbstractCegarLoop]: Abstraction has 79844 states and 102968 transitions. [2020-10-13 08:18:32,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:18:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 79844 states and 102968 transitions. [2020-10-13 08:18:32,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2020-10-13 08:18:32,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:32,307 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:18:32,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:18:32,307 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:32,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:32,308 INFO L82 PathProgramCache]: Analyzing trace with hash 2128686714, now seen corresponding path program 1 times [2020-10-13 08:18:32,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:32,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423531857] [2020-10-13 08:18:32,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:32,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:32,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:35,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:37,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:37,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 565 [2020-10-13 08:18:37,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:18:37,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 08:18:37,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:37,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:37,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 08:18:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 08:18:37,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:37,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:37,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:37,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:37,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:37,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:37,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:18:37,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:37,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:37,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:37,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:37,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:37,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:37,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:37,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:18:37,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:37,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 08:18:37,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:37,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 08:18:37,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:37,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-13 08:18:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:37,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:37,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:37,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:18:37,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:37,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 08:18:37,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:37,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:37,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:18:37,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 08:18:37,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:38,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-13 08:18:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:38,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:38,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:38,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:18:38,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:38,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 08:18:38,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:38,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:38,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 266 [2020-10-13 08:18:38,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:38,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 181 proven. 101 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-13 08:18:40,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423531857] [2020-10-13 08:18:40,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:40,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:18:40,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433979950] [2020-10-13 08:18:40,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:18:40,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:40,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:18:40,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:18:40,198 INFO L87 Difference]: Start difference. First operand 79844 states and 102968 transitions. Second operand 8 states. [2020-10-13 08:18:56,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:56,082 INFO L93 Difference]: Finished difference Result 181385 states and 237005 transitions. [2020-10-13 08:18:56,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:18:56,084 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 551 [2020-10-13 08:18:56,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:56,526 INFO L225 Difference]: With dead ends: 181385 [2020-10-13 08:18:56,526 INFO L226 Difference]: Without dead ends: 101547 [2020-10-13 08:18:56,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:18:56,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101547 states. [2020-10-13 08:18:58,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101547 to 101531. [2020-10-13 08:18:58,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101531 states. [2020-10-13 08:18:58,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101531 states to 101531 states and 131237 transitions. [2020-10-13 08:18:58,776 INFO L78 Accepts]: Start accepts. Automaton has 101531 states and 131237 transitions. Word has length 551 [2020-10-13 08:18:58,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:58,777 INFO L479 AbstractCegarLoop]: Abstraction has 101531 states and 131237 transitions. [2020-10-13 08:18:58,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:18:58,777 INFO L276 IsEmpty]: Start isEmpty. Operand 101531 states and 131237 transitions. [2020-10-13 08:18:58,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2020-10-13 08:18:58,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:58,827 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:18:58,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:18:58,828 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:58,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:58,828 INFO L82 PathProgramCache]: Analyzing trace with hash -154040789, now seen corresponding path program 1 times [2020-10-13 08:18:58,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:58,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462991186] [2020-10-13 08:18:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:59,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:59,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:01,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:03,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:03,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 626 [2020-10-13 08:19:03,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:19:03,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 08:19:03,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:03,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:03,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 233 [2020-10-13 08:19:03,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 08:19:03,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:04,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:04,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:04,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:04,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:04,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:04,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:19:04,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:04,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:04,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:04,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:04,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:04,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:19:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:04,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:04,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:04,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:19:04,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:04,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:19:04,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:04,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:04,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:04,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:04,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:04,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-13 08:19:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:04,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:04,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:04,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:19:04,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:04,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 08:19:04,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:19:04,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:04,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-13 08:19:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:04,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:04,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:04,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:19:04,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:04,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 08:19:04,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:04,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:04,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:19:04,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 08:19:04,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:04,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-13 08:19:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:04,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:04,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:04,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:19:04,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:04,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 08:19:04,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 266 [2020-10-13 08:19:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:04,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:04,971 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 272 proven. 87 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-10-13 08:19:04,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462991186] [2020-10-13 08:19:04,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:04,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:19:04,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849460311] [2020-10-13 08:19:04,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:19:04,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:04,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:19:04,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:19:04,974 INFO L87 Difference]: Start difference. First operand 101531 states and 131237 transitions. Second operand 8 states.