/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/Problem03_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:22:17,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:22:17,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:22:17,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:22:17,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:22:17,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:22:17,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:22:17,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:22:17,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:22:17,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:22:17,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:22:17,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:22:17,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:22:17,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:22:17,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:22:17,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:22:17,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:22:17,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:22:17,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:22:17,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:22:17,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:22:17,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:22:17,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:22:17,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:22:17,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:22:17,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:22:17,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:22:17,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:22:17,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:22:17,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:22:17,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:22:17,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:22:17,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:22:17,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:22:17,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:22:17,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:22:17,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:22:17,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:22:17,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:22:17,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:22:17,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:22:17,102 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 06:22:17,125 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:22:17,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:22:17,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:22:17,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:22:17,127 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:22:17,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:22:17,127 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:22:17,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:22:17,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:22:17,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:22:17,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:22:17,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:22:17,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:22:17,129 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:22:17,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:22:17,129 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:22:17,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:22:17,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:22:17,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:22:17,130 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:22:17,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:22:17,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:22:17,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:22:17,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:22:17,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:22:17,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:22:17,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:22:17,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:22:17,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:22:17,132 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 06:22:17,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:22:17,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:22:17,471 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:22:17,473 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:22:17,475 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:22:17,476 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label39.c [2020-10-13 06:22:17,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/483d7b821/e27018abf93e4c2093486c7026669153/FLAGca236678b [2020-10-13 06:22:18,213 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:22:18,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label39.c [2020-10-13 06:22:18,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/483d7b821/e27018abf93e4c2093486c7026669153/FLAGca236678b [2020-10-13 06:22:18,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/483d7b821/e27018abf93e4c2093486c7026669153 [2020-10-13 06:22:18,392 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:22:18,394 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:22:18,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:22:18,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:22:18,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:22:18,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:22:18" (1/1) ... [2020-10-13 06:22:18,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bdfc9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:18, skipping insertion in model container [2020-10-13 06:22:18,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:22:18" (1/1) ... [2020-10-13 06:22:18,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:22:18,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:22:19,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:22:19,400 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:22:19,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:22:19,737 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:22:19,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:19 WrapperNode [2020-10-13 06:22:19,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:22:19,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:22:19,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:22:19,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:22:19,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:19" (1/1) ... [2020-10-13 06:22:19,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:19" (1/1) ... [2020-10-13 06:22:19,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:19" (1/1) ... [2020-10-13 06:22:19,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:19" (1/1) ... [2020-10-13 06:22:19,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:19" (1/1) ... [2020-10-13 06:22:19,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:19" (1/1) ... [2020-10-13 06:22:19,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:19" (1/1) ... [2020-10-13 06:22:19,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:22:19,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:22:19,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:22:19,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:22:19,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:19" (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 06:22:20,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:22:20,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:22:20,003 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:22:20,003 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:22:20,004 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:22:20,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:22:20,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:22:20,005 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:22:20,006 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:22:20,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:22:20,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:22:22,081 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:22:22,081 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:22:22,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:22:22 BoogieIcfgContainer [2020-10-13 06:22:22,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:22:22,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:22:22,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:22:22,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:22:22,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:22:18" (1/3) ... [2020-10-13 06:22:22,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18930723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:22:22, skipping insertion in model container [2020-10-13 06:22:22,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:22:19" (2/3) ... [2020-10-13 06:22:22,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18930723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:22:22, skipping insertion in model container [2020-10-13 06:22:22,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:22:22" (3/3) ... [2020-10-13 06:22:22,110 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label39.c [2020-10-13 06:22:22,123 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:22:22,139 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:22:22,156 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:22:22,200 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:22:22,201 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:22:22,201 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:22:22,202 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:22:22,202 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:22:22,202 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:22:22,202 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:22:22,203 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:22:22,238 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:22:22,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 06:22:22,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:22,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:22:22,261 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:22,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:22,268 INFO L82 PathProgramCache]: Analyzing trace with hash -986634456, now seen corresponding path program 1 times [2020-10-13 06:22:22,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:22,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796892342] [2020-10-13 06:22:22,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:22,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:23,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:27,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:27,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 06:22:27,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:22:27,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4550 [2020-10-13 06:22:27,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:27,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:22:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:22:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:22:27,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:22:28,307 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-13 06:22:28,528 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-13 06:22:28,707 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-13 06:22:28,990 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 72 [2020-10-13 06:22:29,205 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2020-10-13 06:22:29,399 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2020-10-13 06:22:29,582 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2020-10-13 06:22:29,856 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:29,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:29,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:29,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:29,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:29,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:29,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:22:29,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:29,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:29,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:29,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:22:29,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:30,637 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 06:22:30,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796892342] [2020-10-13 06:22:30,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:22:30,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 06:22:30,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904782019] [2020-10-13 06:22:30,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 06:22:30,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:30,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 06:22:30,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:22:30,676 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 12 states. [2020-10-13 06:22:31,154 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 06:22:31,869 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 166 [2020-10-13 06:22:32,465 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 166 [2020-10-13 06:22:33,129 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-13 06:22:34,145 WARN L193 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 173 [2020-10-13 06:22:35,280 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 172 [2020-10-13 06:22:36,561 WARN L193 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 171 [2020-10-13 06:22:39,295 WARN L193 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 170 [2020-10-13 06:22:40,374 WARN L193 SmtUtils]: Spent 865.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 169 [2020-10-13 06:22:42,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:42,956 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:22:42,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:22:42,962 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 153 [2020-10-13 06:22:42,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:42,996 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:22:42,996 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:22:43,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-13 06:22:43,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:22:43,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:22:43,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:22:43,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:22:43,091 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 153 [2020-10-13 06:22:43,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:43,093 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:22:43,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 06:22:43,093 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:22:43,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 06:22:43,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:43,098 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:22:43,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:22:43,099 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:43,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:43,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1736852209, now seen corresponding path program 1 times [2020-10-13 06:22:43,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:43,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105856780] [2020-10-13 06:22:43,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:43,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:43,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:44,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:47,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:47,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 06:22:47,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:22:47,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4378 [2020-10-13 06:22:47,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:47,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:47,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:22:47,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-13 06:22:47,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:22:47,803 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:47,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:47,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:47,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:47,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:47,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:47,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:22:47,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:47,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:47,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:47,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:47,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:22:47,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:47,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:47,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:47,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:22:47,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:47,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:22:47,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:47,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:22:47,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:47,981 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:22:47,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105856780] [2020-10-13 06:22:47,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:47,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:22:47,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477780833] [2020-10-13 06:22:47,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:22:47,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:47,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:22:47,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:22:47,989 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 5 states. [2020-10-13 06:22:48,169 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:22:50,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:50,337 INFO L93 Difference]: Finished difference Result 838 states and 1311 transitions. [2020-10-13 06:22:50,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:22:50,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-13 06:22:50,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:50,349 INFO L225 Difference]: With dead ends: 838 [2020-10-13 06:22:50,349 INFO L226 Difference]: Without dead ends: 595 [2020-10-13 06:22:50,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:22:50,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2020-10-13 06:22:50,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 581. [2020-10-13 06:22:50,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-10-13 06:22:50,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 863 transitions. [2020-10-13 06:22:50,400 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 863 transitions. Word has length 164 [2020-10-13 06:22:50,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:50,401 INFO L479 AbstractCegarLoop]: Abstraction has 581 states and 863 transitions. [2020-10-13 06:22:50,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:22:50,401 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 863 transitions. [2020-10-13 06:22:50,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 06:22:50,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:50,406 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:22:50,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:22:50,407 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:50,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:50,407 INFO L82 PathProgramCache]: Analyzing trace with hash -612436840, now seen corresponding path program 1 times [2020-10-13 06:22:50,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:50,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372559930] [2020-10-13 06:22:50,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:50,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:50,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:51,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:51,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:54,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:54,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 06:22:54,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:22:54,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3737 [2020-10-13 06:22:54,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:54,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:54,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:22:54,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:22:54,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:22:54,383 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:54,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:54,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:54,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:54,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:54,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:54,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:22:54,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:54,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:54,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:54,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:54,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:54,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:54,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:54,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:54,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:22:54,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:54,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:22:54,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:22:54,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:22:54,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:22:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:54,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:54,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:54,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:22:54,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:54,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 06:22:54,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:54,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:54,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:54,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:22:54,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:22:54,649 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:22:54,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372559930] [2020-10-13 06:22:54,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:54,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:22:54,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922382865] [2020-10-13 06:22:54,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:22:54,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:54,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:22:54,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:22:54,661 INFO L87 Difference]: Start difference. First operand 581 states and 863 transitions. Second operand 7 states. [2020-10-13 06:22:54,859 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:22:55,469 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:22:57,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:57,924 INFO L93 Difference]: Finished difference Result 1489 states and 2348 transitions. [2020-10-13 06:22:57,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:22:57,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-10-13 06:22:57,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:57,933 INFO L225 Difference]: With dead ends: 1489 [2020-10-13 06:22:57,933 INFO L226 Difference]: Without dead ends: 1029 [2020-10-13 06:22:57,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:22:57,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2020-10-13 06:22:57,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 1015. [2020-10-13 06:22:57,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-13 06:22:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1424 transitions. [2020-10-13 06:22:57,985 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1424 transitions. Word has length 174 [2020-10-13 06:22:57,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:57,986 INFO L479 AbstractCegarLoop]: Abstraction has 1015 states and 1424 transitions. [2020-10-13 06:22:57,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:22:57,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1424 transitions. [2020-10-13 06:22:57,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 06:22:57,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:57,990 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 06:22:57,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:22:57,991 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:57,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:57,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1298162243, now seen corresponding path program 1 times [2020-10-13 06:22:57,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:57,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839748102] [2020-10-13 06:22:57,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:58,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:58,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:58,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 06:22:58,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:58,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-13 06:22:58,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:58,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:58,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:22:58,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-13 06:22:58,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:58,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:58,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:58,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:58,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:58,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:58,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:22:58,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:58,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:58,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:58,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:58,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:58,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:58,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:58,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:58,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:22:58,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:58,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 06:22:58,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:58,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:58,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:58,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:22:58,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:58,968 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:22:58,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839748102] [2020-10-13 06:22:58,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:58,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:22:58,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014416674] [2020-10-13 06:22:58,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:22:58,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:58,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:22:58,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:22:58,972 INFO L87 Difference]: Start difference. First operand 1015 states and 1424 transitions. Second operand 5 states. [2020-10-13 06:22:59,262 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:23:01,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:01,938 INFO L93 Difference]: Finished difference Result 2770 states and 4051 transitions. [2020-10-13 06:23:01,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:23:01,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-13 06:23:01,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:01,955 INFO L225 Difference]: With dead ends: 2770 [2020-10-13 06:23:01,955 INFO L226 Difference]: Without dead ends: 1876 [2020-10-13 06:23:01,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:23:01,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2020-10-13 06:23:02,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1870. [2020-10-13 06:23:02,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1870 states. [2020-10-13 06:23:02,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2595 transitions. [2020-10-13 06:23:02,048 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2595 transitions. Word has length 174 [2020-10-13 06:23:02,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:02,050 INFO L479 AbstractCegarLoop]: Abstraction has 1870 states and 2595 transitions. [2020-10-13 06:23:02,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:23:02,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2595 transitions. [2020-10-13 06:23:02,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 06:23:02,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:02,060 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:02,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:23:02,061 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:02,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:02,062 INFO L82 PathProgramCache]: Analyzing trace with hash -623746873, now seen corresponding path program 1 times [2020-10-13 06:23:02,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:02,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978536793] [2020-10-13 06:23:02,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:02,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:02,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:03,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:05,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:05,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 06:23:05,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:23:05,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3095 [2020-10-13 06:23:05,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:05,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:05,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:23:05,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:23:05,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:23:05,415 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:05,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:05,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:05,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:05,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:05,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:05,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:23:05,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:05,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:05,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:05,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:05,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:23:05,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:05,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:05,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:05,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:23:05,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:05,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:23:05,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:05,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:05,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:05,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:23:05,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:23:05,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:23:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:05,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:05,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:05,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:23:05,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 06:23:05,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:05,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:23:05,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:23:05,775 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:23:05,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978536793] [2020-10-13 06:23:05,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:05,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:05,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811354319] [2020-10-13 06:23:05,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:05,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:05,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:05,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:05,779 INFO L87 Difference]: Start difference. First operand 1870 states and 2595 transitions. Second operand 7 states. [2020-10-13 06:23:05,930 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:23:06,336 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:23:08,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:08,565 INFO L93 Difference]: Finished difference Result 4521 states and 6368 transitions. [2020-10-13 06:23:08,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:23:08,566 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2020-10-13 06:23:08,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:08,583 INFO L225 Difference]: With dead ends: 4521 [2020-10-13 06:23:08,584 INFO L226 Difference]: Without dead ends: 2772 [2020-10-13 06:23:08,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:23:08,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2020-10-13 06:23:08,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2744. [2020-10-13 06:23:08,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2744 states. [2020-10-13 06:23:08,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2744 states to 2744 states and 3654 transitions. [2020-10-13 06:23:08,684 INFO L78 Accepts]: Start accepts. Automaton has 2744 states and 3654 transitions. Word has length 178 [2020-10-13 06:23:08,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:08,685 INFO L479 AbstractCegarLoop]: Abstraction has 2744 states and 3654 transitions. [2020-10-13 06:23:08,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:08,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2744 states and 3654 transitions. [2020-10-13 06:23:08,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 06:23:08,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:08,694 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:08,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:23:08,694 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:08,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:08,695 INFO L82 PathProgramCache]: Analyzing trace with hash -2131779861, now seen corresponding path program 1 times [2020-10-13 06:23:08,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:08,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918042563] [2020-10-13 06:23:08,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:08,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:08,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:09,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:12,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:12,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 06:23:12,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:23:12,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3308 [2020-10-13 06:23:12,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:12,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:12,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:23:12,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:23:12,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:23:12,211 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:12,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:12,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:12,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:12,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:12,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:12,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:23:12,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:12,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:12,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:12,339 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 06:23:12,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:12,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:12,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:12,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:23:12,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:12,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:23:12,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:12,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:12,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:12,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:23:12,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:23:12,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:23:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:12,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:12,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:12,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:23:12,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:12,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 06:23:12,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:12,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:23:12,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:23:12,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918042563] [2020-10-13 06:23:12,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:12,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:12,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441394020] [2020-10-13 06:23:12,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:12,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:12,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:12,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:12,505 INFO L87 Difference]: Start difference. First operand 2744 states and 3654 transitions. Second operand 7 states. [2020-10-13 06:23:12,642 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:23:13,235 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:23:15,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:15,540 INFO L93 Difference]: Finished difference Result 5463 states and 7565 transitions. [2020-10-13 06:23:15,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:23:15,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-13 06:23:15,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:15,560 INFO L225 Difference]: With dead ends: 5463 [2020-10-13 06:23:15,560 INFO L226 Difference]: Without dead ends: 2840 [2020-10-13 06:23:15,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:23:15,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2020-10-13 06:23:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 2800. [2020-10-13 06:23:15,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2800 states. [2020-10-13 06:23:15,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2800 states to 2800 states and 3560 transitions. [2020-10-13 06:23:15,664 INFO L78 Accepts]: Start accepts. Automaton has 2800 states and 3560 transitions. Word has length 180 [2020-10-13 06:23:15,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:15,664 INFO L479 AbstractCegarLoop]: Abstraction has 2800 states and 3560 transitions. [2020-10-13 06:23:15,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:15,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2800 states and 3560 transitions. [2020-10-13 06:23:15,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-13 06:23:15,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:15,674 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:15,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:23:15,674 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:15,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:15,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1320822021, now seen corresponding path program 1 times [2020-10-13 06:23:15,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:15,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249398383] [2020-10-13 06:23:15,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:15,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:15,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:16,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:18,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:18,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-13 06:23:18,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:23:18,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2811 [2020-10-13 06:23:18,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:18,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:18,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:23:18,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:23:18,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:23:18,741 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:18,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:18,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:18,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:18,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:18,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:18,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:23:18,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:18,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:18,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:18,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:18,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:23:18,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:18,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:18,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:18,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:23:18,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:18,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 06:23:18,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:18,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:18,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:18,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:23:18,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:23:18,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:23:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:18,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:18,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:18,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:23:18,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:18,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:23:18,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:18,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:18,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:18,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:23:18,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:23:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:23:19,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249398383] [2020-10-13 06:23:19,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:19,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:19,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789275721] [2020-10-13 06:23:19,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:19,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:19,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:19,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:19,058 INFO L87 Difference]: Start difference. First operand 2800 states and 3560 transitions. Second operand 7 states. [2020-10-13 06:23:19,184 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:23:19,773 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:23:22,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:22,017 INFO L93 Difference]: Finished difference Result 6873 states and 9031 transitions. [2020-10-13 06:23:22,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:23:22,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-10-13 06:23:22,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:22,036 INFO L225 Difference]: With dead ends: 6873 [2020-10-13 06:23:22,037 INFO L226 Difference]: Without dead ends: 4194 [2020-10-13 06:23:22,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:23:22,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4194 states. [2020-10-13 06:23:22,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4194 to 4141. [2020-10-13 06:23:22,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4141 states. [2020-10-13 06:23:22,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4141 states to 4141 states and 5188 transitions. [2020-10-13 06:23:22,143 INFO L78 Accepts]: Start accepts. Automaton has 4141 states and 5188 transitions. Word has length 188 [2020-10-13 06:23:22,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:22,144 INFO L479 AbstractCegarLoop]: Abstraction has 4141 states and 5188 transitions. [2020-10-13 06:23:22,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:22,144 INFO L276 IsEmpty]: Start isEmpty. Operand 4141 states and 5188 transitions. [2020-10-13 06:23:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-13 06:23:22,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:22,155 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:22,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:23:22,155 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:22,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:22,156 INFO L82 PathProgramCache]: Analyzing trace with hash -2006098913, now seen corresponding path program 1 times [2020-10-13 06:23:22,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:22,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668406837] [2020-10-13 06:23:22,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:22,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:22,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:22,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:23,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:24,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:24,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-13 06:23:24,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:23:24,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2636 [2020-10-13 06:23:24,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:24,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:24,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:23:24,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:23:24,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:24,997 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:24,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:25,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:25,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:25,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:25,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:25,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:23:25,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:25,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:25,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:25,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:25,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:25,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:23:25,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:25,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 06:23:25,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:25,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:25,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:25,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:23:25,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:25,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:23:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:25,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:25,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:25,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:23:25,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:25,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 06:23:25,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:25,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:23:25,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:25,307 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:23:25,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668406837] [2020-10-13 06:23:25,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:25,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:25,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817410477] [2020-10-13 06:23:25,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:25,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:25,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:25,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:25,311 INFO L87 Difference]: Start difference. First operand 4141 states and 5188 transitions. Second operand 7 states. [2020-10-13 06:23:25,650 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:23:26,188 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:23:29,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:29,176 INFO L93 Difference]: Finished difference Result 10554 states and 14294 transitions. [2020-10-13 06:23:29,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:23:29,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-10-13 06:23:29,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:29,213 INFO L225 Difference]: With dead ends: 10554 [2020-10-13 06:23:29,213 INFO L226 Difference]: Without dead ends: 6534 [2020-10-13 06:23:29,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:23:29,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6534 states. [2020-10-13 06:23:29,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6534 to 6367. [2020-10-13 06:23:29,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6367 states. [2020-10-13 06:23:29,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6367 states to 6367 states and 7853 transitions. [2020-10-13 06:23:29,398 INFO L78 Accepts]: Start accepts. Automaton has 6367 states and 7853 transitions. Word has length 190 [2020-10-13 06:23:29,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:29,398 INFO L479 AbstractCegarLoop]: Abstraction has 6367 states and 7853 transitions. [2020-10-13 06:23:29,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:29,399 INFO L276 IsEmpty]: Start isEmpty. Operand 6367 states and 7853 transitions. [2020-10-13 06:23:29,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-13 06:23:29,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:29,416 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:29,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:23:29,417 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:29,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:29,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1463279719, now seen corresponding path program 1 times [2020-10-13 06:23:29,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:29,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832182012] [2020-10-13 06:23:29,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:29,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:29,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:30,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:30,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:31,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:31,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-13 06:23:31,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:23:31,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2522 [2020-10-13 06:23:31,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:31,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:23:31,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:23:31,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:23:31,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:32,152 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:32,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:32,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:32,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:32,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:32,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:32,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:23:32,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:32,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:32,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:32,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:23:32,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:32,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:32,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:32,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:32,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:23:32,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:32,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 06:23:32,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:32,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:32,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:32,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:23:32,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:32,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:23:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:32,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:32,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:32,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:23:32,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:23:32,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 06:23:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:32,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:32,448 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 42 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 06:23:32,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832182012] [2020-10-13 06:23:32,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:32,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:23:32,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249273007] [2020-10-13 06:23:32,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:23:32,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:32,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:23:32,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:23:32,449 INFO L87 Difference]: Start difference. First operand 6367 states and 7853 transitions. Second operand 8 states. [2020-10-13 06:23:32,590 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:23:34,026 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:23:35,261 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 06:23:37,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:37,119 INFO L93 Difference]: Finished difference Result 20132 states and 26105 transitions. [2020-10-13 06:23:37,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 06:23:37,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 201 [2020-10-13 06:23:37,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:37,186 INFO L225 Difference]: With dead ends: 20132 [2020-10-13 06:23:37,187 INFO L226 Difference]: Without dead ends: 13886 [2020-10-13 06:23:37,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-13 06:23:37,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13886 states. [2020-10-13 06:23:37,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13886 to 13737. [2020-10-13 06:23:37,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13737 states. [2020-10-13 06:23:37,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13737 states to 13737 states and 16935 transitions. [2020-10-13 06:23:37,550 INFO L78 Accepts]: Start accepts. Automaton has 13737 states and 16935 transitions. Word has length 201 [2020-10-13 06:23:37,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:37,550 INFO L479 AbstractCegarLoop]: Abstraction has 13737 states and 16935 transitions. [2020-10-13 06:23:37,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:23:37,551 INFO L276 IsEmpty]: Start isEmpty. Operand 13737 states and 16935 transitions. [2020-10-13 06:23:37,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-13 06:23:37,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:37,577 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:37,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:23:37,578 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:37,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:37,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1945691323, now seen corresponding path program 1 times [2020-10-13 06:23:37,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:37,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282514054] [2020-10-13 06:23:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:37,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:37,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:39,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:40,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:40,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:40,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 06:23:40,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:23:40,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3108 [2020-10-13 06:23:40,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:40,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:23:40,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:23:40,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:40,934 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:40,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:40,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:40,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:40,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:40,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:40,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:23:40,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:40,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:41,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:41,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:41,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:41,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:23:41,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:41,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 06:23:41,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:23:41,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:41,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:23:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:41,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:41,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:41,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:23:41,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:41,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:23:41,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:41,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:41,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:41,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:23:41,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:41,183 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:23:41,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282514054] [2020-10-13 06:23:41,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:41,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:41,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699590374] [2020-10-13 06:23:41,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:41,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:41,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:41,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:41,185 INFO L87 Difference]: Start difference. First operand 13737 states and 16935 transitions. Second operand 7 states. [2020-10-13 06:23:41,486 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:23:42,155 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:23:44,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:44,280 INFO L93 Difference]: Finished difference Result 32221 states and 41433 transitions. [2020-10-13 06:23:44,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:23:44,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-13 06:23:44,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:44,347 INFO L225 Difference]: With dead ends: 32221 [2020-10-13 06:23:44,348 INFO L226 Difference]: Without dead ends: 18605 [2020-10-13 06:23:44,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:23:44,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18605 states. [2020-10-13 06:23:44,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18605 to 18407. [2020-10-13 06:23:44,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18407 states. [2020-10-13 06:23:44,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18407 states to 18407 states and 22742 transitions. [2020-10-13 06:23:44,819 INFO L78 Accepts]: Start accepts. Automaton has 18407 states and 22742 transitions. Word has length 204 [2020-10-13 06:23:44,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:44,819 INFO L479 AbstractCegarLoop]: Abstraction has 18407 states and 22742 transitions. [2020-10-13 06:23:44,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:44,820 INFO L276 IsEmpty]: Start isEmpty. Operand 18407 states and 22742 transitions. [2020-10-13 06:23:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-13 06:23:44,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:44,845 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:23:44,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:23:44,845 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:44,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:44,846 INFO L82 PathProgramCache]: Analyzing trace with hash 797952912, now seen corresponding path program 1 times [2020-10-13 06:23:44,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:44,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65290254] [2020-10-13 06:23:44,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:44,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:45,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:46,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:49,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:49,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-13 06:23:49,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:23:49,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 06:23:49,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:49,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-13 06:23:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:23:49,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:50,075 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:50,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:50,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:50,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:50,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:50,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:50,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:23:50,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:50,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:50,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:50,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:50,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:50,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:50,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:50,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:50,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:23:50,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:50,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:23:50,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:50,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:50,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:50,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:50,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:50,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:23:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:50,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:50,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:50,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:23:50,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:50,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 06:23:50,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:50,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:50,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:50,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:23:50,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:50,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 06:23:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:50,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:50,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:50,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:23:50,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:50,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 06:23:50,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:23:50,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:23:50,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65290254] [2020-10-13 06:23:50,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:50,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:50,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951305855] [2020-10-13 06:23:50,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:50,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:50,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:50,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:50,325 INFO L87 Difference]: Start difference. First operand 18407 states and 22742 transitions. Second operand 7 states. [2020-10-13 06:23:50,547 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:23:50,806 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:23:54,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:54,406 INFO L93 Difference]: Finished difference Result 46108 states and 60117 transitions. [2020-10-13 06:23:54,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:23:54,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-13 06:23:54,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:54,520 INFO L225 Difference]: With dead ends: 46108 [2020-10-13 06:23:54,521 INFO L226 Difference]: Without dead ends: 27822 [2020-10-13 06:23:54,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:23:54,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27822 states. [2020-10-13 06:23:55,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27822 to 27330. [2020-10-13 06:23:55,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27330 states. [2020-10-13 06:23:55,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27330 states to 27330 states and 33183 transitions. [2020-10-13 06:23:55,214 INFO L78 Accepts]: Start accepts. Automaton has 27330 states and 33183 transitions. Word has length 213 [2020-10-13 06:23:55,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:55,215 INFO L479 AbstractCegarLoop]: Abstraction has 27330 states and 33183 transitions. [2020-10-13 06:23:55,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:55,215 INFO L276 IsEmpty]: Start isEmpty. Operand 27330 states and 33183 transitions. [2020-10-13 06:23:55,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-13 06:23:55,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:55,242 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:23:55,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:23:55,243 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:55,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:55,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1230816658, now seen corresponding path program 1 times [2020-10-13 06:23:55,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:55,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271898726] [2020-10-13 06:23:55,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:55,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:55,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:55,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:57,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:57,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:59,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:00,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:00,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-13 06:24:00,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:24:00,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 06:24:00,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:00,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:00,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 06:24:00,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:24:00,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:00,454 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:00,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:00,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:00,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:00,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:00,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:00,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:24:00,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:00,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:00,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:00,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:00,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:00,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:00,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:00,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:00,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:24:00,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:00,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:24:00,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:00,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:00,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:24:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:00,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:00,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:00,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:24:00,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:00,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:24:00,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 06:24:00,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:00,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 06:24:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:00,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:00,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:00,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:24:00,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:00,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:24:00,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:24:00,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:00,682 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:24:00,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271898726] [2020-10-13 06:24:00,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:00,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:00,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75943245] [2020-10-13 06:24:00,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:00,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:00,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:00,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:00,684 INFO L87 Difference]: Start difference. First operand 27330 states and 33183 transitions. Second operand 7 states. [2020-10-13 06:24:00,818 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:24:01,629 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:24:04,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:04,038 INFO L93 Difference]: Finished difference Result 71049 states and 88955 transitions. [2020-10-13 06:24:04,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:24:04,038 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-10-13 06:24:04,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:04,183 INFO L225 Difference]: With dead ends: 71049 [2020-10-13 06:24:04,183 INFO L226 Difference]: Without dead ends: 45986 [2020-10-13 06:24:04,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:24:04,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45986 states. [2020-10-13 06:24:05,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45986 to 45182. [2020-10-13 06:24:05,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45182 states. [2020-10-13 06:24:05,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45182 states to 45182 states and 54254 transitions. [2020-10-13 06:24:05,207 INFO L78 Accepts]: Start accepts. Automaton has 45182 states and 54254 transitions. Word has length 214 [2020-10-13 06:24:05,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:05,207 INFO L479 AbstractCegarLoop]: Abstraction has 45182 states and 54254 transitions. [2020-10-13 06:24:05,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:05,207 INFO L276 IsEmpty]: Start isEmpty. Operand 45182 states and 54254 transitions. [2020-10-13 06:24:05,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-13 06:24:05,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:05,249 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:05,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:24:05,250 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:05,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:05,250 INFO L82 PathProgramCache]: Analyzing trace with hash -349774623, now seen corresponding path program 1 times [2020-10-13 06:24:05,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:05,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038269483] [2020-10-13 06:24:05,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:05,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:05,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:06,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:06,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 06:24:06,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:24:06,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1295 [2020-10-13 06:24:06,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:24:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:24:06,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:06,749 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:06,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:06,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:06,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:06,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:06,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:06,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:24:06,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:06,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:06,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:06,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:06,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:06,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:06,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:06,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:06,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:24:06,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:06,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:24:06,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:24:06,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:06,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:24:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:06,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:06,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:06,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:24:06,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:06,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 06:24:06,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:06,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:06,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:06,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:24:06,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:24:07,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038269483] [2020-10-13 06:24:07,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:07,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:07,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848095070] [2020-10-13 06:24:07,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:07,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:07,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:07,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:07,089 INFO L87 Difference]: Start difference. First operand 45182 states and 54254 transitions. Second operand 7 states. [2020-10-13 06:24:07,393 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:24:08,516 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:24:11,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:11,774 INFO L93 Difference]: Finished difference Result 99129 states and 119347 transitions. [2020-10-13 06:24:11,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:24:11,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-13 06:24:11,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:11,944 INFO L225 Difference]: With dead ends: 99129 [2020-10-13 06:24:11,945 INFO L226 Difference]: Without dead ends: 50973 [2020-10-13 06:24:12,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:24:12,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50973 states. [2020-10-13 06:24:12,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50973 to 44098. [2020-10-13 06:24:12,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44098 states. [2020-10-13 06:24:12,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44098 states to 44098 states and 50659 transitions. [2020-10-13 06:24:12,930 INFO L78 Accepts]: Start accepts. Automaton has 44098 states and 50659 transitions. Word has length 232 [2020-10-13 06:24:12,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:12,930 INFO L479 AbstractCegarLoop]: Abstraction has 44098 states and 50659 transitions. [2020-10-13 06:24:12,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:12,931 INFO L276 IsEmpty]: Start isEmpty. Operand 44098 states and 50659 transitions. [2020-10-13 06:24:12,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-13 06:24:12,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:12,983 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-13 06:24:12,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:24:12,983 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:12,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:12,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1347952003, now seen corresponding path program 1 times [2020-10-13 06:24:12,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:12,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181191598] [2020-10-13 06:24:12,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:13,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:13,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:14,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:14,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-13 06:24:14,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:24:14,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1294 [2020-10-13 06:24:14,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:14,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:14,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:24:14,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:24:14,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:14,506 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:14,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:14,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:14,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:14,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:14,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:14,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:24:14,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:14,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:14,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:14,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:14,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:14,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:14,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:14,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:14,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:24:14,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:14,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 06:24:14,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:14,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:14,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:14,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:24:14,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:14,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:24:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:14,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:14,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:14,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:24:14,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:14,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 06:24:14,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:24:14,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:14,839 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:24:14,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181191598] [2020-10-13 06:24:14,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:14,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:14,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811452551] [2020-10-13 06:24:14,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:14,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:14,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:14,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:14,841 INFO L87 Difference]: Start difference. First operand 44098 states and 50659 transitions. Second operand 7 states. [2020-10-13 06:24:15,170 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:24:15,751 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:24:17,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:17,790 INFO L93 Difference]: Finished difference Result 90663 states and 107720 transitions. [2020-10-13 06:24:17,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:24:17,790 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-10-13 06:24:17,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:17,962 INFO L225 Difference]: With dead ends: 90663 [2020-10-13 06:24:17,962 INFO L226 Difference]: Without dead ends: 47330 [2020-10-13 06:24:18,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:24:18,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47330 states. [2020-10-13 06:24:20,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47330 to 45778. [2020-10-13 06:24:20,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45778 states. [2020-10-13 06:24:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45778 states to 45778 states and 52492 transitions. [2020-10-13 06:24:20,223 INFO L78 Accepts]: Start accepts. Automaton has 45778 states and 52492 transitions. Word has length 246 [2020-10-13 06:24:20,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:20,224 INFO L479 AbstractCegarLoop]: Abstraction has 45778 states and 52492 transitions. [2020-10-13 06:24:20,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:20,224 INFO L276 IsEmpty]: Start isEmpty. Operand 45778 states and 52492 transitions. [2020-10-13 06:24:20,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-13 06:24:20,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:20,255 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:20,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:24:20,255 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:20,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:20,255 INFO L82 PathProgramCache]: Analyzing trace with hash -483858369, now seen corresponding path program 1 times [2020-10-13 06:24:20,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:20,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671060840] [2020-10-13 06:24:20,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:20,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:20,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:22,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:22,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-13 06:24:22,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:24:22,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2459 [2020-10-13 06:24:22,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-13 06:24:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-13 06:24:22,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:23,001 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:23,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:23,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:23,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:23,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:23,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:23,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:24:23,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:23,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:23,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:23,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:23,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:23,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:23,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:23,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:23,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:24:23,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:23,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:24:23,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:23,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:23,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:24:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:23,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:23,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:23,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:24:23,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:23,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 06:24:23,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 06:24:23,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 06:24:23,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671060840] [2020-10-13 06:24:23,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:23,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:24:23,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104512073] [2020-10-13 06:24:23,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:24:23,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:23,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:24:23,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:24:23,332 INFO L87 Difference]: Start difference. First operand 45778 states and 52492 transitions. Second operand 5 states. [2020-10-13 06:24:23,863 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:24:25,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:26,000 INFO L93 Difference]: Finished difference Result 90603 states and 103921 transitions. [2020-10-13 06:24:26,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:24:26,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 291 [2020-10-13 06:24:26,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:26,120 INFO L225 Difference]: With dead ends: 90603 [2020-10-13 06:24:26,120 INFO L226 Difference]: Without dead ends: 45803 [2020-10-13 06:24:26,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:24:26,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45803 states. [2020-10-13 06:24:26,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45803 to 43265. [2020-10-13 06:24:26,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43265 states. [2020-10-13 06:24:26,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43265 states to 43265 states and 48972 transitions. [2020-10-13 06:24:26,887 INFO L78 Accepts]: Start accepts. Automaton has 43265 states and 48972 transitions. Word has length 291 [2020-10-13 06:24:26,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:26,888 INFO L479 AbstractCegarLoop]: Abstraction has 43265 states and 48972 transitions. [2020-10-13 06:24:26,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:24:26,888 INFO L276 IsEmpty]: Start isEmpty. Operand 43265 states and 48972 transitions. [2020-10-13 06:24:26,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-13 06:24:26,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:26,925 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:24:26,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:24:26,926 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:26,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:26,926 INFO L82 PathProgramCache]: Analyzing trace with hash 16699253, now seen corresponding path program 1 times [2020-10-13 06:24:26,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:26,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100232074] [2020-10-13 06:24:26,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:27,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:27,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:27,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:29,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:32,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:32,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-13 06:24:32,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:24:32,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 06:24:32,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:24:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:24:32,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:32,206 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:32,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:32,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:32,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:32,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:32,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:32,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:24:32,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:32,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:32,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:32,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:32,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:32,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:32,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:32,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:32,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:24:32,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:32,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 06:24:32,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:32,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:32,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:32,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:24:32,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:32,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:24:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:32,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:32,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:32,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 06:24:32,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:32,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 06:24:32,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:32,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:32,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:32,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:24:32,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:32,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 06:24:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:32,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:32,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:32,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 06:24:32,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:32,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:24:32,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 06:24:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:32,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:32,575 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 156 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-13 06:24:32,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100232074] [2020-10-13 06:24:32,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:32,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:32,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317508766] [2020-10-13 06:24:32,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:32,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:32,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:32,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:32,577 INFO L87 Difference]: Start difference. First operand 43265 states and 48972 transitions. Second operand 7 states. [2020-10-13 06:24:32,704 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:24:35,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:35,494 INFO L93 Difference]: Finished difference Result 127994 states and 148064 transitions. [2020-10-13 06:24:35,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 06:24:35,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-10-13 06:24:35,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:35,656 INFO L225 Difference]: With dead ends: 127994 [2020-10-13 06:24:35,656 INFO L226 Difference]: Without dead ends: 85707 [2020-10-13 06:24:35,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:24:35,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85707 states. [2020-10-13 06:24:37,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85707 to 84861. [2020-10-13 06:24:37,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84861 states. [2020-10-13 06:24:37,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84861 states to 84861 states and 96046 transitions. [2020-10-13 06:24:37,857 INFO L78 Accepts]: Start accepts. Automaton has 84861 states and 96046 transitions. Word has length 299 [2020-10-13 06:24:37,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:37,858 INFO L479 AbstractCegarLoop]: Abstraction has 84861 states and 96046 transitions. [2020-10-13 06:24:37,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:37,858 INFO L276 IsEmpty]: Start isEmpty. Operand 84861 states and 96046 transitions. [2020-10-13 06:24:37,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-13 06:24:37,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:37,920 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:37,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:24:37,921 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:37,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:37,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1064100136, now seen corresponding path program 1 times [2020-10-13 06:24:37,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:37,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497588607] [2020-10-13 06:24:37,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:38,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:38,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:38,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:43,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:43,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:43,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-13 06:24:43,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:24:43,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-13 06:24:43,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:43,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:43,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-13 06:24:43,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 06:24:43,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:43,305 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:43,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:43,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:43,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:43,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:43,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:43,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:24:43,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:43,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:43,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:43,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:43,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:43,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:24:43,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:43,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:24:43,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:43,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:43,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:24:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:43,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:43,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:43,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 06:24:43,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:43,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:24:43,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:43,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:43,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:43,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:43,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:43,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 06:24:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:43,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:43,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:43,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:24:43,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:43,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 06:24:43,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:43,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:43,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:43,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 06:24:43,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:43,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-13 06:24:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:43,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:43,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:43,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:24:43,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:43,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 06:24:43,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:43,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:43,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:43,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:24:43,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:24:43,826 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-13 06:24:43,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497588607] [2020-10-13 06:24:43,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:43,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:24:43,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585700473] [2020-10-13 06:24:43,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:24:43,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:43,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:24:43,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:24:43,828 INFO L87 Difference]: Start difference. First operand 84861 states and 96046 transitions. Second operand 7 states. [2020-10-13 06:24:44,174 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:24:45,219 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:24:50,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:24:50,124 INFO L93 Difference]: Finished difference Result 183272 states and 217908 transitions. [2020-10-13 06:24:50,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:24:50,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-13 06:24:50,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:24:50,345 INFO L225 Difference]: With dead ends: 183272 [2020-10-13 06:24:50,345 INFO L226 Difference]: Without dead ends: 99389 [2020-10-13 06:24:50,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:24:50,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99389 states. [2020-10-13 06:24:51,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99389 to 94939. [2020-10-13 06:24:51,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94939 states. [2020-10-13 06:24:51,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94939 states to 94939 states and 107875 transitions. [2020-10-13 06:24:51,985 INFO L78 Accepts]: Start accepts. Automaton has 94939 states and 107875 transitions. Word has length 311 [2020-10-13 06:24:51,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:51,985 INFO L479 AbstractCegarLoop]: Abstraction has 94939 states and 107875 transitions. [2020-10-13 06:24:51,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:51,985 INFO L276 IsEmpty]: Start isEmpty. Operand 94939 states and 107875 transitions. [2020-10-13 06:24:52,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-13 06:24:52,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:52,029 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:24:52,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:24:52,029 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:52,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:52,029 INFO L82 PathProgramCache]: Analyzing trace with hash -482222782, now seen corresponding path program 1 times [2020-10-13 06:24:52,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:52,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920588832] [2020-10-13 06:24:52,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:52,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:52,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:54,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:57,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:57,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-13 06:24:57,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:24:57,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-13 06:24:57,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:57,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 06:24:57,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:24:57,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 06:24:57,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:57,338 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:24:57,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:24:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:57,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:57,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:57,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:24:57,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:57,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:24:57,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:57,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:24:57,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:24:57,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:24:57,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:57,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:24:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:57,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:57,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:57,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:24:57,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:57,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:24:57,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:57,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:24:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:24:57,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:57,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:24:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:57,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:57,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:57,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:24:57,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:57,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 06:24:57,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:57,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:24:57,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:24:57,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 06:24:57,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:57,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 06:24:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:57,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:57,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:24:57,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 06:24:57,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:24:57,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 06:24:57,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:24:57,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:24:57,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:24:57,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:24:57,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:24:58,066 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 161 proven. 38 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 06:24:58,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920588832] [2020-10-13 06:24:58,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:24:58,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 06:24:58,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938854566] [2020-10-13 06:24:58,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 06:24:58,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:24:58,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 06:24:58,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:24:58,068 INFO L87 Difference]: Start difference. First operand 94939 states and 107875 transitions. Second operand 11 states. [2020-10-13 06:24:58,209 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:24:58,585 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 134 [2020-10-13 06:24:59,082 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 133 [2020-10-13 06:25:00,367 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 132 [2020-10-13 06:25:01,038 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:25:01,947 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:25:03,995 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2020-10-13 06:25:07,396 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:25:08,582 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:25:11,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:11,335 INFO L93 Difference]: Finished difference Result 458664 states and 532086 transitions. [2020-10-13 06:25:11,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-13 06:25:11,336 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 311 [2020-10-13 06:25:11,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:12,266 INFO L225 Difference]: With dead ends: 458664 [2020-10-13 06:25:12,266 INFO L226 Difference]: Without dead ends: 364703 [2020-10-13 06:25:12,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=381, Invalid=1425, Unknown=0, NotChecked=0, Total=1806 [2020-10-13 06:25:16,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364703 states. [2020-10-13 06:25:20,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364703 to 359221. [2020-10-13 06:25:20,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359221 states. [2020-10-13 06:25:21,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359221 states to 359221 states and 416544 transitions. [2020-10-13 06:25:21,191 INFO L78 Accepts]: Start accepts. Automaton has 359221 states and 416544 transitions. Word has length 311 [2020-10-13 06:25:21,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:25:21,192 INFO L479 AbstractCegarLoop]: Abstraction has 359221 states and 416544 transitions. [2020-10-13 06:25:21,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 06:25:21,192 INFO L276 IsEmpty]: Start isEmpty. Operand 359221 states and 416544 transitions. [2020-10-13 06:25:21,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-13 06:25:21,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:21,243 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:25:21,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 06:25:21,243 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:21,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:21,243 INFO L82 PathProgramCache]: Analyzing trace with hash -2037358152, now seen corresponding path program 1 times [2020-10-13 06:25:21,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:21,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589465988] [2020-10-13 06:25:21,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:21,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:21,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:26,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:26,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-13 06:25:26,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:25:26,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 06:25:26,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:25:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-13 06:25:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-13 06:25:26,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:26,539 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:26,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:26,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:26,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:26,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:26,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:26,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:25:26,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:26,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:26,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:26,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:26,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:26,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:25:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:26,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:26,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:26,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:25:26,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:26,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 06:25:26,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:26,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:25:26,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:26,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:25:26,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:26,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:25:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:26,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:26,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:26,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:25:26,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:26,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 06:25:26,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:26,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:26,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:26,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:25:26,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:26,844 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-13 06:25:26,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589465988] [2020-10-13 06:25:26,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:25:26,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:25:26,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383428800] [2020-10-13 06:25:26,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:25:26,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:26,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:25:26,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:25:26,846 INFO L87 Difference]: Start difference. First operand 359221 states and 416544 transitions. Second operand 5 states. [2020-10-13 06:25:26,978 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:25:32,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:25:32,653 INFO L93 Difference]: Finished difference Result 761399 states and 885798 transitions. [2020-10-13 06:25:32,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:25:32,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-13 06:25:32,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:25:33,799 INFO L225 Difference]: With dead ends: 761399 [2020-10-13 06:25:33,799 INFO L226 Difference]: Without dead ends: 403156 [2020-10-13 06:25:34,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:25:34,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403156 states.