/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_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:14:54,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:14:54,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:14:54,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:14:54,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:14:54,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:14:54,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:14:54,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:14:54,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:14:54,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:14:54,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:14:54,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:14:54,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:14:54,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:14:54,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:14:54,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:14:54,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:14:54,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:14:54,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:14:54,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:14:54,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:14:54,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:14:54,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:14:54,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:14:54,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:14:54,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:14:54,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:14:54,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:14:54,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:14:54,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:14:54,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:14:54,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:14:54,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:14:54,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:14:54,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:14:54,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:14:54,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:14:54,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:14:54,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:14:54,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:14:54,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:14:54,244 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 06:14:54,281 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:14:54,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:14:54,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:14:54,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:14:54,284 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:14:54,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:14:54,285 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:14:54,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:14:54,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:14:54,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:14:54,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:14:54,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:14:54,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:14:54,287 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:14:54,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:14:54,288 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:14:54,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:14:54,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:14:54,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:14:54,288 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:14:54,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:14:54,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:14:54,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:14:54,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:14:54,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:14:54,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:14:54,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:14:54,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:14:54,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:14:54,291 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 06:14:54,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:14:54,648 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:14:54,652 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:14:54,654 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:14:54,654 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:14:54,655 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label07.c [2020-10-13 06:14:54,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7eaaa3162/e8db49d9d50a4b2abbd5c4cdc5f98c5b/FLAG300161a8c [2020-10-13 06:14:55,377 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:14:55,378 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label07.c [2020-10-13 06:14:55,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7eaaa3162/e8db49d9d50a4b2abbd5c4cdc5f98c5b/FLAG300161a8c [2020-10-13 06:14:55,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7eaaa3162/e8db49d9d50a4b2abbd5c4cdc5f98c5b [2020-10-13 06:14:55,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:14:55,582 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:14:55,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:14:55,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:14:55,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:14:55,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:14:55" (1/1) ... [2020-10-13 06:14:55,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532b1c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:55, skipping insertion in model container [2020-10-13 06:14:55,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:14:55" (1/1) ... [2020-10-13 06:14:55,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:14:55,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:14:56,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:14:56,528 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:14:56,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:14:56,822 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:14:56,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:56 WrapperNode [2020-10-13 06:14:56,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:14:56,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:14:56,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:14:56,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:14:56,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:56" (1/1) ... [2020-10-13 06:14:56,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:56" (1/1) ... [2020-10-13 06:14:56,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:56" (1/1) ... [2020-10-13 06:14:56,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:56" (1/1) ... [2020-10-13 06:14:56,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:56" (1/1) ... [2020-10-13 06:14:56,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:56" (1/1) ... [2020-10-13 06:14:57,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:56" (1/1) ... [2020-10-13 06:14:57,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:14:57,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:14:57,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:14:57,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:14:57,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:56" (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 06:14:57,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:14:57,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:14:57,081 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:14:57,081 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:14:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:14:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:14:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:14:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:14:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:14:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:14:57,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:14:59,059 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:14:59,060 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:14:59,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:14:59 BoogieIcfgContainer [2020-10-13 06:14:59,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:14:59,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:14:59,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:14:59,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:14:59,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:14:55" (1/3) ... [2020-10-13 06:14:59,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648bc34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:14:59, skipping insertion in model container [2020-10-13 06:14:59,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:56" (2/3) ... [2020-10-13 06:14:59,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648bc34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:14:59, skipping insertion in model container [2020-10-13 06:14:59,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:14:59" (3/3) ... [2020-10-13 06:14:59,076 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label07.c [2020-10-13 06:14:59,088 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:14:59,098 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:14:59,114 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:14:59,143 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:14:59,143 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:14:59,143 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:14:59,143 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:14:59,143 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:14:59,144 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:14:59,144 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:14:59,144 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:14:59,169 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:14:59,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 06:14:59,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:14:59,188 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, 1, 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 06:14:59,189 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:14:59,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:14:59,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1461970635, now seen corresponding path program 1 times [2020-10-13 06:14:59,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:14:59,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149341040] [2020-10-13 06:14:59,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:14:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:14:59,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:00,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:03,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:03,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 06:15:03,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:15:03,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4193 [2020-10-13 06:15:03,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:03,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:15:03,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:15:03,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:15:03,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:15:04,712 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 62 [2020-10-13 06:15:05,590 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:05,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:05,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:05,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:05,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:05,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:05,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 06:15:05,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:15:05,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:06,491 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 06:15:06,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149341040] [2020-10-13 06:15:06,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:15:06,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 06:15:06,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974359778] [2020-10-13 06:15:06,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 06:15:06,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:06,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 06:15:06,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-13 06:15:06,516 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 14 states. [2020-10-13 06:15:06,903 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 06:15:07,556 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 166 [2020-10-13 06:15:08,145 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 166 [2020-10-13 06:15:08,890 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 174 [2020-10-13 06:15:09,587 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 173 [2020-10-13 06:15:10,524 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 172 [2020-10-13 06:15:11,535 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 171 [2020-10-13 06:15:14,235 WARN L193 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 170 [2020-10-13 06:15:15,020 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 168 [2020-10-13 06:15:17,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:17,269 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:15:17,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:15:17,271 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 178 [2020-10-13 06:15:17,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:17,293 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:15:17,293 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:15:17,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2020-10-13 06:15:17,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:15:17,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:15:17,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:15:17,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:15:17,391 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 178 [2020-10-13 06:15:17,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:17,393 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:15:17,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 06:15:17,393 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:15:17,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-13 06:15:17,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:17,400 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, 1, 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 06:15:17,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:15:17,400 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:17,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:17,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1089526482, now seen corresponding path program 1 times [2020-10-13 06:15:17,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:17,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895893171] [2020-10-13 06:15:17,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:17,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:17,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:19,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:21,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:21,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 06:15:21,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:15:21,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4108 [2020-10-13 06:15:21,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:21,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 06:15:21,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:15:21,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 06:15:21,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:22,386 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-13 06:15:22,745 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-10-13 06:15:22,946 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2020-10-13 06:15:23,131 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2020-10-13 06:15:23,335 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-10-13 06:15:23,472 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-10-13 06:15:23,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:23,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:23,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:23,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:23,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:23,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 06:15:23,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:23,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:23,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:23,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:15:23,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:23,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:23,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:23,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:23,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:15:23,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:23,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:15:23,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:23,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:15:23,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:15:23,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:15:23,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:15:24,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895893171] [2020-10-13 06:15:24,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:24,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 06:15:24,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441713338] [2020-10-13 06:15:24,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 06:15:24,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:24,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 06:15:24,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:15:24,585 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-13 06:15:24,835 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-13 06:15:25,356 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2020-10-13 06:15:25,568 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-10-13 06:15:25,846 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 86 [2020-10-13 06:15:26,466 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 180 [2020-10-13 06:15:27,158 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 200 [2020-10-13 06:15:28,329 WARN L193 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 197 [2020-10-13 06:15:30,399 WARN L193 SmtUtils]: Spent 989.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 194 [2020-10-13 06:15:33,060 WARN L193 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 191 [2020-10-13 06:15:36,407 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 188 [2020-10-13 06:15:37,289 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 183 [2020-10-13 06:15:40,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:40,830 INFO L93 Difference]: Finished difference Result 982 states and 1589 transitions. [2020-10-13 06:15:40,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 06:15:40,833 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 189 [2020-10-13 06:15:40,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:40,841 INFO L225 Difference]: With dead ends: 982 [2020-10-13 06:15:40,842 INFO L226 Difference]: Without dead ends: 739 [2020-10-13 06:15:40,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=202, Invalid=554, Unknown=0, NotChecked=0, Total=756 [2020-10-13 06:15:40,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-10-13 06:15:40,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 731. [2020-10-13 06:15:40,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-10-13 06:15:40,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 985 transitions. [2020-10-13 06:15:40,901 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 985 transitions. Word has length 189 [2020-10-13 06:15:40,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:40,902 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 985 transitions. [2020-10-13 06:15:40,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 06:15:40,902 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 985 transitions. [2020-10-13 06:15:40,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-13 06:15:40,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:40,909 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, 1, 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 06:15:40,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:15:40,909 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:40,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:40,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1415511430, now seen corresponding path program 1 times [2020-10-13 06:15:40,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:40,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881804909] [2020-10-13 06:15:40,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:41,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:41,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:41,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-13 06:15:41,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:41,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-10-13 06:15:41,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:41,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:41,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:15:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-13 06:15:41,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:41,983 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:41,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:41,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:41,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:41,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:41,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:41,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:15:41,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:41,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:41,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:41,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:41,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:42,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:42,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:42,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:42,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:15:42,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:42,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 06:15:42,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:42,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:15:42,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:42,234 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 06:15:42,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881804909] [2020-10-13 06:15:42,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:42,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:15:42,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12028009] [2020-10-13 06:15:42,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:15:42,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:42,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:15:42,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:15:42,238 INFO L87 Difference]: Start difference. First operand 731 states and 985 transitions. Second operand 5 states. [2020-10-13 06:15:42,433 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-13 06:15:44,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:44,979 INFO L93 Difference]: Finished difference Result 1933 states and 2685 transitions. [2020-10-13 06:15:44,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:15:44,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-10-13 06:15:44,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:44,993 INFO L225 Difference]: With dead ends: 1933 [2020-10-13 06:15:44,993 INFO L226 Difference]: Without dead ends: 1323 [2020-10-13 06:15:44,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 06:15:44,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-10-13 06:15:45,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1167. [2020-10-13 06:15:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2020-10-13 06:15:45,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1611 transitions. [2020-10-13 06:15:45,078 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1611 transitions. Word has length 199 [2020-10-13 06:15:45,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:45,080 INFO L479 AbstractCegarLoop]: Abstraction has 1167 states and 1611 transitions. [2020-10-13 06:15:45,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:15:45,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1611 transitions. [2020-10-13 06:15:45,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-13 06:15:45,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:45,095 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:15:45,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:15:45,096 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:45,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:45,097 INFO L82 PathProgramCache]: Analyzing trace with hash -145098735, now seen corresponding path program 1 times [2020-10-13 06:15:45,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:45,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427573757] [2020-10-13 06:15:45,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:45,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:45,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:45,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:47,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:47,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:47,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-13 06:15:47,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:15:47,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2287 [2020-10-13 06:15:47,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:15:47,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:15:47,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:47,607 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:47,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:47,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:47,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:47,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:47,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:47,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:15:47,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:47,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:47,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:47,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:47,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:47,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:47,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:47,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:47,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:15:47,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:47,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 06:15:47,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:47,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:47,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:47,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:15:47,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:15:47,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:15:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:47,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:47,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:47,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:15:47,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:47,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 06:15:47,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:15:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:15:47,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:15:47,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427573757] [2020-10-13 06:15:47,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:47,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:15:47,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940135725] [2020-10-13 06:15:47,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:15:47,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:47,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:15:47,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:15:47,917 INFO L87 Difference]: Start difference. First operand 1167 states and 1611 transitions. Second operand 7 states. [2020-10-13 06:15:48,325 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:15:48,833 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:15:51,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:51,375 INFO L93 Difference]: Finished difference Result 3190 states and 4887 transitions. [2020-10-13 06:15:51,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:15:51,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-10-13 06:15:51,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:51,396 INFO L225 Difference]: With dead ends: 3190 [2020-10-13 06:15:51,396 INFO L226 Difference]: Without dead ends: 2144 [2020-10-13 06:15:51,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:15:51,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2020-10-13 06:15:51,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 2044. [2020-10-13 06:15:51,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2044 states. [2020-10-13 06:15:51,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 2658 transitions. [2020-10-13 06:15:51,508 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 2658 transitions. Word has length 209 [2020-10-13 06:15:51,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:51,509 INFO L479 AbstractCegarLoop]: Abstraction has 2044 states and 2658 transitions. [2020-10-13 06:15:51,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:15:51,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 2658 transitions. [2020-10-13 06:15:51,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-13 06:15:51,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:51,515 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, 1, 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 06:15:51,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:15:51,516 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:51,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:51,516 INFO L82 PathProgramCache]: Analyzing trace with hash 914770114, now seen corresponding path program 1 times [2020-10-13 06:15:51,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:51,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819239182] [2020-10-13 06:15:51,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:51,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:51,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:53,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:54,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:55,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:55,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-13 06:15:55,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:15:55,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4032 [2020-10-13 06:15:55,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:55,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:55,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:15:55,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:15:55,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:55,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:55,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:55,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:55,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:55,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:55,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:15:55,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:55,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:55,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:55,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:55,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:55,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:55,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:55,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:55,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:15:55,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:55,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:15:55,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:55,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:55,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:55,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:15:55,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:55,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:15:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:55,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:55,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:55,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:15:55,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:55,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 06:15:55,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:55,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:55,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:15:55,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:15:55,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:55,992 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 06:15:55,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819239182] [2020-10-13 06:15:55,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:55,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:15:55,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207993196] [2020-10-13 06:15:55,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:15:55,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:55,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:15:55,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:15:55,994 INFO L87 Difference]: Start difference. First operand 2044 states and 2658 transitions. Second operand 7 states. [2020-10-13 06:15:56,310 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:15:57,268 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:15:59,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:59,310 INFO L93 Difference]: Finished difference Result 3994 states and 6045 transitions. [2020-10-13 06:15:59,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:15:59,311 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-13 06:15:59,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:59,332 INFO L225 Difference]: With dead ends: 3994 [2020-10-13 06:15:59,332 INFO L226 Difference]: Without dead ends: 3077 [2020-10-13 06:15:59,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:15:59,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2020-10-13 06:15:59,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 2937. [2020-10-13 06:15:59,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2937 states. [2020-10-13 06:15:59,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 3841 transitions. [2020-10-13 06:15:59,450 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 3841 transitions. Word has length 213 [2020-10-13 06:15:59,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:59,450 INFO L479 AbstractCegarLoop]: Abstraction has 2937 states and 3841 transitions. [2020-10-13 06:15:59,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:15:59,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 3841 transitions. [2020-10-13 06:15:59,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-13 06:15:59,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:59,458 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, 1, 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 06:15:59,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:15:59,459 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:59,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:59,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1364092898, now seen corresponding path program 1 times [2020-10-13 06:15:59,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:59,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237386125] [2020-10-13 06:15:59,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:59,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:59,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:00,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:02,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:02,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-13 06:16:02,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:16:02,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3398 [2020-10-13 06:16:02,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:16:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:16:02,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:03,075 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:03,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:03,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:03,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:03,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:03,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:03,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:16:03,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:03,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:03,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:03,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:03,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:03,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:03,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:03,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:03,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:16:03,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:03,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:16:03,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:16:03,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:03,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:16:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:03,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:03,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:03,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:16:03,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:03,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:16:03,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:03,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:03,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:03,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:16:03,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:03,331 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 06:16:03,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237386125] [2020-10-13 06:16:03,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:03,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:03,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493834399] [2020-10-13 06:16:03,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:03,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:03,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:03,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:03,334 INFO L87 Difference]: Start difference. First operand 2937 states and 3841 transitions. Second operand 7 states. [2020-10-13 06:16:03,665 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:16:04,447 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:16:07,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:07,162 INFO L93 Difference]: Finished difference Result 6703 states and 9818 transitions. [2020-10-13 06:16:07,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:16:07,163 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-10-13 06:16:07,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:07,191 INFO L225 Difference]: With dead ends: 6703 [2020-10-13 06:16:07,191 INFO L226 Difference]: Without dead ends: 4895 [2020-10-13 06:16:07,198 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 06:16:07,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4895 states. [2020-10-13 06:16:07,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4895 to 4733. [2020-10-13 06:16:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4733 states. [2020-10-13 06:16:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4733 states to 4733 states and 6154 transitions. [2020-10-13 06:16:07,349 INFO L78 Accepts]: Start accepts. Automaton has 4733 states and 6154 transitions. Word has length 215 [2020-10-13 06:16:07,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:07,349 INFO L479 AbstractCegarLoop]: Abstraction has 4733 states and 6154 transitions. [2020-10-13 06:16:07,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:07,350 INFO L276 IsEmpty]: Start isEmpty. Operand 4733 states and 6154 transitions. [2020-10-13 06:16:07,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-13 06:16:07,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:07,361 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:16:07,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:16:07,361 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:07,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:07,362 INFO L82 PathProgramCache]: Analyzing trace with hash 311915386, now seen corresponding path program 1 times [2020-10-13 06:16:07,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:07,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449068336] [2020-10-13 06:16:07,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:07,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:08,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:08,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:10,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:10,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-13 06:16:10,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:16:10,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2799 [2020-10-13 06:16:10,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:16:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:16:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:16:10,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:10,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:10,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:10,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:10,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:10,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:10,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:16:10,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:16:10,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:10,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:10,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:10,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:10,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:16:10,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:10,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 06:16:10,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:16:10,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:10,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:16:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:10,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:10,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:10,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:16:10,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:10,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:16:10,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:10,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:10,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 06:16:10,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:10,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:10,765 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 06:16:10,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449068336] [2020-10-13 06:16:10,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:10,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:10,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927060778] [2020-10-13 06:16:10,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:10,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:10,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:10,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:10,767 INFO L87 Difference]: Start difference. First operand 4733 states and 6154 transitions. Second operand 7 states. [2020-10-13 06:16:10,905 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:16:11,651 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:16:14,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:14,102 INFO L93 Difference]: Finished difference Result 13597 states and 18429 transitions. [2020-10-13 06:16:14,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:16:14,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-10-13 06:16:14,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:14,148 INFO L225 Difference]: With dead ends: 13597 [2020-10-13 06:16:14,148 INFO L226 Difference]: Without dead ends: 8985 [2020-10-13 06:16:14,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:16:14,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8985 states. [2020-10-13 06:16:14,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8985 to 8683. [2020-10-13 06:16:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8683 states. [2020-10-13 06:16:14,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8683 states to 8683 states and 10931 transitions. [2020-10-13 06:16:14,441 INFO L78 Accepts]: Start accepts. Automaton has 8683 states and 10931 transitions. Word has length 224 [2020-10-13 06:16:14,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:14,442 INFO L479 AbstractCegarLoop]: Abstraction has 8683 states and 10931 transitions. [2020-10-13 06:16:14,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:14,442 INFO L276 IsEmpty]: Start isEmpty. Operand 8683 states and 10931 transitions. [2020-10-13 06:16:14,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-13 06:16:14,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:14,463 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, 1, 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 06:16:14,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:16:14,463 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:14,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:14,464 INFO L82 PathProgramCache]: Analyzing trace with hash -635586814, now seen corresponding path program 1 times [2020-10-13 06:16:14,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:14,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296751546] [2020-10-13 06:16:14,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:14,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:14,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:15,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:16,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:16,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-13 06:16:16,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:16:16,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2476 [2020-10-13 06:16:16,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:16,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:16,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:16:16,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:16:16,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:17,164 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:17,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:17,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:17,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:17,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:17,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:17,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:16:17,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:17,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:17,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:17,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:17,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:17,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:17,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:17,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:17,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:16:17,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:17,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 06:16:17,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:17,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:17,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:17,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:16:17,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:17,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:16:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:17,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:17,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:17,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:16:17,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:17,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 06:16:17,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:17,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:17,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:17,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:16:17,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:17,644 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 06:16:17,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296751546] [2020-10-13 06:16:17,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:17,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:17,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128085442] [2020-10-13 06:16:17,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:17,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:17,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:17,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:17,648 INFO L87 Difference]: Start difference. First operand 8683 states and 10931 transitions. Second operand 7 states. [2020-10-13 06:16:18,021 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:18,810 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:16:21,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:21,375 INFO L93 Difference]: Finished difference Result 19717 states and 25280 transitions. [2020-10-13 06:16:21,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:16:21,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-10-13 06:16:21,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:21,435 INFO L225 Difference]: With dead ends: 19717 [2020-10-13 06:16:21,435 INFO L226 Difference]: Without dead ends: 13044 [2020-10-13 06:16:21,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:16:21,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13044 states. [2020-10-13 06:16:21,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13044 to 12938. [2020-10-13 06:16:21,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12938 states. [2020-10-13 06:16:21,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12938 states to 12938 states and 16191 transitions. [2020-10-13 06:16:21,790 INFO L78 Accepts]: Start accepts. Automaton has 12938 states and 16191 transitions. Word has length 229 [2020-10-13 06:16:21,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:21,791 INFO L479 AbstractCegarLoop]: Abstraction has 12938 states and 16191 transitions. [2020-10-13 06:16:21,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:21,791 INFO L276 IsEmpty]: Start isEmpty. Operand 12938 states and 16191 transitions. [2020-10-13 06:16:21,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-13 06:16:21,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:21,810 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:21,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:16:21,810 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:21,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:21,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1842801485, now seen corresponding path program 1 times [2020-10-13 06:16:21,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:21,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598040234] [2020-10-13 06:16:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:21,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:22,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:22,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:22,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-13 06:16:22,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:16:22,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-10-13 06:16:22,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:16:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 06:16:22,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:23,057 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:23,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:23,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:23,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:23,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:23,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:23,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:16:23,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:23,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:23,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:23,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:23,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:23,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:16:23,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:23,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:16:23,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:23,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:23,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:23,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:16:23,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:23,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:16:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:23,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:23,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:23,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:16:23,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:23,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 06:16:23,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:23,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:23,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:23,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:16:23,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:23,484 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:16:23,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598040234] [2020-10-13 06:16:23,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:23,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:23,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072739153] [2020-10-13 06:16:23,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:23,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:23,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:23,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:23,488 INFO L87 Difference]: Start difference. First operand 12938 states and 16191 transitions. Second operand 7 states. [2020-10-13 06:16:23,842 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:16:25,049 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:16:26,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:26,841 INFO L93 Difference]: Finished difference Result 33603 states and 45590 transitions. [2020-10-13 06:16:26,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:16:26,842 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-10-13 06:16:26,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:26,930 INFO L225 Difference]: With dead ends: 33603 [2020-10-13 06:16:26,930 INFO L226 Difference]: Without dead ends: 20786 [2020-10-13 06:16:26,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:16:26,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20786 states. [2020-10-13 06:16:27,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20786 to 20339. [2020-10-13 06:16:27,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20339 states. [2020-10-13 06:16:27,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20339 states to 20339 states and 25307 transitions. [2020-10-13 06:16:27,758 INFO L78 Accepts]: Start accepts. Automaton has 20339 states and 25307 transitions. Word has length 233 [2020-10-13 06:16:27,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:27,759 INFO L479 AbstractCegarLoop]: Abstraction has 20339 states and 25307 transitions. [2020-10-13 06:16:27,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:27,759 INFO L276 IsEmpty]: Start isEmpty. Operand 20339 states and 25307 transitions. [2020-10-13 06:16:27,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-13 06:16:27,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:27,793 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:27,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:16:27,793 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:27,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:27,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1329936484, now seen corresponding path program 1 times [2020-10-13 06:16:27,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:27,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483696540] [2020-10-13 06:16:27,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:27,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:28,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:28,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:29,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:30,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:32,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:32,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-13 06:16:32,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:16:32,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 06:16:32,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 06:16:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:16:32,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:33,024 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:33,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:33,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:33,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:33,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:33,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:33,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:16:33,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:33,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:33,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:33,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:33,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:33,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:33,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:33,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:33,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:16:33,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:33,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:16:33,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:33,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:33,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:16:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:33,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:33,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:33,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:16:33,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:33,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 06:16:33,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:33,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:33,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:33,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:16:33,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:33,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 06:16:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:33,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:33,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:33,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:16:33,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:33,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 06:16:33,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:33,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:33,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:33,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:16:33,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-13 06:16:33,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483696540] [2020-10-13 06:16:33,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:33,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:33,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814355124] [2020-10-13 06:16:33,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:33,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:33,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:33,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:33,378 INFO L87 Difference]: Start difference. First operand 20339 states and 25307 transitions. Second operand 7 states. [2020-10-13 06:16:33,523 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:34,773 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:16:36,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:36,900 INFO L93 Difference]: Finished difference Result 47041 states and 59302 transitions. [2020-10-13 06:16:36,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:16:36,901 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-13 06:16:36,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:36,975 INFO L225 Difference]: With dead ends: 47041 [2020-10-13 06:16:36,975 INFO L226 Difference]: Without dead ends: 26823 [2020-10-13 06:16:37,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 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 06:16:37,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26823 states. [2020-10-13 06:16:38,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26823 to 26722. [2020-10-13 06:16:38,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26722 states. [2020-10-13 06:16:38,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26722 states to 26722 states and 33546 transitions. [2020-10-13 06:16:38,499 INFO L78 Accepts]: Start accepts. Automaton has 26722 states and 33546 transitions. Word has length 271 [2020-10-13 06:16:38,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:38,499 INFO L479 AbstractCegarLoop]: Abstraction has 26722 states and 33546 transitions. [2020-10-13 06:16:38,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:38,499 INFO L276 IsEmpty]: Start isEmpty. Operand 26722 states and 33546 transitions. [2020-10-13 06:16:38,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-13 06:16:38,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:38,545 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 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 06:16:38,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:16:38,546 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:38,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:38,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1821169856, now seen corresponding path program 1 times [2020-10-13 06:16:38,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:38,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086731360] [2020-10-13 06:16:38,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:38,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:38,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:40,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:42,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:42,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 06:16:42,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:16:42,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3688 [2020-10-13 06:16:42,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:42,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:42,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 06:16:42,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:16:42,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:42,478 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:42,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:42,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:42,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:42,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:42,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:42,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:16:42,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:42,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:42,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:42,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:42,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:42,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:42,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:16:42,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:42,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:16:42,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:42,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:42,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:42,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:42,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:42,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:16:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:42,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:42,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:42,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:16:42,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:42,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 06:16:42,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:42,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:42,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:42,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:16:42,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:42,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 06:16:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:42,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:42,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:42,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:16:42,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:42,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:16:42,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:42,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:42,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:42,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:16:42,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-13 06:16:42,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086731360] [2020-10-13 06:16:42,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:42,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:42,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16157794] [2020-10-13 06:16:42,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:42,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:42,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:42,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:42,796 INFO L87 Difference]: Start difference. First operand 26722 states and 33546 transitions. Second operand 7 states. [2020-10-13 06:16:42,927 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:16:44,430 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-13 06:16:46,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:46,271 INFO L93 Difference]: Finished difference Result 72407 states and 93373 transitions. [2020-10-13 06:16:46,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:16:46,272 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-10-13 06:16:46,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:46,412 INFO L225 Difference]: With dead ends: 72407 [2020-10-13 06:16:46,413 INFO L226 Difference]: Without dead ends: 45806 [2020-10-13 06:16:46,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 06:16:46,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45806 states. [2020-10-13 06:16:47,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45806 to 45386. [2020-10-13 06:16:47,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45386 states. [2020-10-13 06:16:47,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45386 states to 45386 states and 57596 transitions. [2020-10-13 06:16:47,323 INFO L78 Accepts]: Start accepts. Automaton has 45386 states and 57596 transitions. Word has length 273 [2020-10-13 06:16:47,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:47,323 INFO L479 AbstractCegarLoop]: Abstraction has 45386 states and 57596 transitions. [2020-10-13 06:16:47,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:47,324 INFO L276 IsEmpty]: Start isEmpty. Operand 45386 states and 57596 transitions. [2020-10-13 06:16:47,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-13 06:16:47,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:47,353 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:47,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:16:47,354 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:47,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:47,354 INFO L82 PathProgramCache]: Analyzing trace with hash -920490693, now seen corresponding path program 1 times [2020-10-13 06:16:47,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:47,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601763354] [2020-10-13 06:16:47,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:47,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:47,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:47,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:48,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:49,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:50,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:52,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:52,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-13 06:16:52,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:16:52,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5114 [2020-10-13 06:16:52,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:52,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:52,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 06:16:52,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 06:16:52,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:52,686 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:52,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:52,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:52,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:52,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:52,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:52,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:16:52,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:52,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:52,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:52,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:52,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:52,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:52,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:52,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:52,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:16:52,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:52,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:16:52,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:52,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:52,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:52,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:52,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:52,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:16:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:52,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:52,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:52,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:16:52,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:52,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 06:16:52,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:52,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:52,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:16:52,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:52,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 06:16:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:52,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:52,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:52,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:16:52,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:52,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:16:52,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:52,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:16:52,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:52,981 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-13 06:16:52,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601763354] [2020-10-13 06:16:52,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:52,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:52,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686950186] [2020-10-13 06:16:52,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:52,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:52,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:52,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:52,983 INFO L87 Difference]: Start difference. First operand 45386 states and 57596 transitions. Second operand 7 states. [2020-10-13 06:16:53,118 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:16:54,261 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:16:56,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:56,003 INFO L93 Difference]: Finished difference Result 90472 states and 117738 transitions. [2020-10-13 06:16:56,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:16:56,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2020-10-13 06:16:56,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:56,160 INFO L225 Difference]: With dead ends: 90472 [2020-10-13 06:16:56,160 INFO L226 Difference]: Without dead ends: 45207 [2020-10-13 06:16:56,241 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 06:16:56,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45207 states. [2020-10-13 06:16:57,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45207 to 41284. [2020-10-13 06:16:57,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41284 states. [2020-10-13 06:16:57,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41284 states to 41284 states and 50605 transitions. [2020-10-13 06:16:57,089 INFO L78 Accepts]: Start accepts. Automaton has 41284 states and 50605 transitions. Word has length 274 [2020-10-13 06:16:57,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:57,089 INFO L479 AbstractCegarLoop]: Abstraction has 41284 states and 50605 transitions. [2020-10-13 06:16:57,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:57,090 INFO L276 IsEmpty]: Start isEmpty. Operand 41284 states and 50605 transitions. [2020-10-13 06:16:57,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-13 06:16:57,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:57,111 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:57,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:16:57,111 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:57,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:57,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1142380208, now seen corresponding path program 1 times [2020-10-13 06:16:57,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:57,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767851969] [2020-10-13 06:16:57,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:57,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:57,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:57,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:58,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:00,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:00,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:02,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:02,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-13 06:17:02,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:17:02,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 06:17:02,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:02,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:02,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 06:17:02,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:17:02,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:02,367 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:02,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:02,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:02,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:02,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:02,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:02,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:17:02,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:02,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:02,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:02,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:02,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:02,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:17:02,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:02,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:17:02,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:02,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:02,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:02,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:02,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:02,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:17:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:02,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:02,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:02,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:17:02,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:02,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 06:17:02,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:17:02,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:02,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 06:17:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:02,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:02,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:02,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:17:02,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:02,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 06:17:02,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:02,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:02,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:02,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:17:02,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-13 06:17:02,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767851969] [2020-10-13 06:17:02,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:02,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:17:02,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696042859] [2020-10-13 06:17:02,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:17:02,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:02,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:17:02,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:17:02,720 INFO L87 Difference]: Start difference. First operand 41284 states and 50605 transitions. Second operand 7 states. [2020-10-13 06:17:02,849 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:17:03,843 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:17:05,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:05,472 INFO L93 Difference]: Finished difference Result 81309 states and 99509 transitions. [2020-10-13 06:17:05,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:17:05,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2020-10-13 06:17:05,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:05,601 INFO L225 Difference]: With dead ends: 81309 [2020-10-13 06:17:05,601 INFO L226 Difference]: Without dead ends: 44393 [2020-10-13 06:17:05,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:17:05,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44393 states. [2020-10-13 06:17:06,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44393 to 44061. [2020-10-13 06:17:06,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44061 states. [2020-10-13 06:17:06,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44061 states to 44061 states and 53805 transitions. [2020-10-13 06:17:06,453 INFO L78 Accepts]: Start accepts. Automaton has 44061 states and 53805 transitions. Word has length 281 [2020-10-13 06:17:06,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:06,454 INFO L479 AbstractCegarLoop]: Abstraction has 44061 states and 53805 transitions. [2020-10-13 06:17:06,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:17:06,454 INFO L276 IsEmpty]: Start isEmpty. Operand 44061 states and 53805 transitions. [2020-10-13 06:17:06,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-13 06:17:06,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:06,478 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:17:06,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:17:06,478 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:06,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:06,479 INFO L82 PathProgramCache]: Analyzing trace with hash -262185267, now seen corresponding path program 1 times [2020-10-13 06:17:06,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:06,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371200736] [2020-10-13 06:17:06,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:06,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:07,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:08,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:11,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:11,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:11,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-13 06:17:11,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:17:11,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 06:17:11,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:11,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:11,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 06:17:11,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 06:17:11,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:11,801 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:11,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:11,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:11,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:11,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:11,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:11,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:17:11,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:11,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:17:11,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:11,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:11,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:11,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:17:11,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:11,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 06:17:11,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:11,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:11,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:11,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:11,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:11,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:17:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:12,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:12,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:12,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:17:12,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:12,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-13 06:17:12,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:12,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:12,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:17:12,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:17:12,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 06:17:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:12,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:12,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:12,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:17:12,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:12,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-13 06:17:12,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:12,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:12,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:17:12,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:17:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-13 06:17:12,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371200736] [2020-10-13 06:17:12,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:12,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:17:12,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300183490] [2020-10-13 06:17:12,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:17:12,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:12,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:17:12,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:17:12,600 INFO L87 Difference]: Start difference. First operand 44061 states and 53805 transitions. Second operand 8 states. [2020-10-13 06:17:12,745 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 06:17:14,122 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:17:14,445 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-13 06:17:17,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:17,538 INFO L93 Difference]: Finished difference Result 140391 states and 173033 transitions. [2020-10-13 06:17:17,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 06:17:17,539 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 295 [2020-10-13 06:17:17,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:17,840 INFO L225 Difference]: With dead ends: 140391 [2020-10-13 06:17:17,841 INFO L226 Difference]: Without dead ends: 96453 [2020-10-13 06:17:17,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-13 06:17:18,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96453 states. [2020-10-13 06:17:19,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96453 to 95658. [2020-10-13 06:17:19,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95658 states. [2020-10-13 06:17:19,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95658 states to 95658 states and 117090 transitions. [2020-10-13 06:17:19,915 INFO L78 Accepts]: Start accepts. Automaton has 95658 states and 117090 transitions. Word has length 295 [2020-10-13 06:17:19,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:19,916 INFO L479 AbstractCegarLoop]: Abstraction has 95658 states and 117090 transitions. [2020-10-13 06:17:19,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:17:19,916 INFO L276 IsEmpty]: Start isEmpty. Operand 95658 states and 117090 transitions. [2020-10-13 06:17:19,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-13 06:17:19,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:19,963 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:17:19,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:17:19,963 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:19,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:19,964 INFO L82 PathProgramCache]: Analyzing trace with hash -2007586941, now seen corresponding path program 1 times [2020-10-13 06:17:19,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:19,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775597758] [2020-10-13 06:17:19,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:20,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:20,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:21,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:22,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:23,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:23,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 06:17:23,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:17:23,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3502 [2020-10-13 06:17:23,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:23,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:23,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:17:23,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:17:23,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:23,691 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:23,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:23,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:23,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:23,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:23,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:23,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:17:23,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:23,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:23,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:23,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:23,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:23,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:23,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:23,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:23,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:17:23,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:23,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 06:17:23,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:23,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:23,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:23,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:17:23,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:23,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:17:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:23,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:23,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:23,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 06:17:23,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:23,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 06:17:23,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:23,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:23,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:23,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:17:23,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:17:24,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775597758] [2020-10-13 06:17:24,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:24,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:17:24,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759461113] [2020-10-13 06:17:24,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:17:24,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:24,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:17:24,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:17:24,308 INFO L87 Difference]: Start difference. First operand 95658 states and 117090 transitions. Second operand 7 states. [2020-10-13 06:17:24,441 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:17:28,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:28,311 INFO L93 Difference]: Finished difference Result 263012 states and 333204 transitions. [2020-10-13 06:17:28,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 06:17:28,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 296 [2020-10-13 06:17:28,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:28,897 INFO L225 Difference]: With dead ends: 263012 [2020-10-13 06:17:28,897 INFO L226 Difference]: Without dead ends: 172797 [2020-10-13 06:17:29,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 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 06:17:29,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172797 states. [2020-10-13 06:17:34,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172797 to 171071. [2020-10-13 06:17:34,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171071 states. [2020-10-13 06:17:34,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171071 states to 171071 states and 210731 transitions. [2020-10-13 06:17:34,865 INFO L78 Accepts]: Start accepts. Automaton has 171071 states and 210731 transitions. Word has length 296 [2020-10-13 06:17:34,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:34,866 INFO L479 AbstractCegarLoop]: Abstraction has 171071 states and 210731 transitions. [2020-10-13 06:17:34,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:17:34,866 INFO L276 IsEmpty]: Start isEmpty. Operand 171071 states and 210731 transitions. [2020-10-13 06:17:34,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-13 06:17:34,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:34,908 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:17:34,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:17:34,908 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:34,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:34,909 INFO L82 PathProgramCache]: Analyzing trace with hash 75552159, now seen corresponding path program 1 times [2020-10-13 06:17:34,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:34,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708700678] [2020-10-13 06:17:34,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:35,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:35,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:35,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:39,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:39,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:39,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 06:17:39,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:17:39,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 06:17:39,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:39,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:39,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:17:39,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:17:39,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:40,201 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:40,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:40,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:40,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:40,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:40,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:40,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:17:40,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:40,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:40,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:40,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:40,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:17:40,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:40,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:40,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:40,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:17:40,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:40,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-13 06:17:40,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:40,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:40,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:40,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:17:40,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:40,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:17:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:40,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:40,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:40,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:17:40,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:40,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 06:17:40,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:40,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:40,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:40,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:17:40,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:17:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:17:40,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708700678] [2020-10-13 06:17:40,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:40,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:17:40,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002730517] [2020-10-13 06:17:40,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:17:40,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:40,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:17:40,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:17:40,883 INFO L87 Difference]: Start difference. First operand 171071 states and 210731 transitions. Second operand 7 states. [2020-10-13 06:17:41,028 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:17:42,251 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:17:45,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:45,932 INFO L93 Difference]: Finished difference Result 367986 states and 461788 transitions. [2020-10-13 06:17:45,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:17:45,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2020-10-13 06:17:45,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:46,409 INFO L225 Difference]: With dead ends: 367986 [2020-10-13 06:17:46,409 INFO L226 Difference]: Without dead ends: 197249 [2020-10-13 06:17:46,572 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 06:17:46,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197249 states. [2020-10-13 06:17:49,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197249 to 196096. [2020-10-13 06:17:49,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196096 states. [2020-10-13 06:17:50,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196096 states to 196096 states and 237112 transitions. [2020-10-13 06:17:50,073 INFO L78 Accepts]: Start accepts. Automaton has 196096 states and 237112 transitions. Word has length 298 [2020-10-13 06:17:50,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:50,074 INFO L479 AbstractCegarLoop]: Abstraction has 196096 states and 237112 transitions. [2020-10-13 06:17:50,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:17:50,074 INFO L276 IsEmpty]: Start isEmpty. Operand 196096 states and 237112 transitions. [2020-10-13 06:17:50,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-13 06:17:50,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:50,127 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:17:50,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:17:50,128 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:50,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:50,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1473120861, now seen corresponding path program 1 times [2020-10-13 06:17:50,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:50,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039475251] [2020-10-13 06:17:50,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:50,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:50,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:50,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:51,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:55,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:55,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-13 06:17:55,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:17:55,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 06:17:55,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:55,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:55,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 06:17:55,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:17:55,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:55,434 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:55,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:55,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:55,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:55,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:55,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:55,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:17:55,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:55,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:55,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:55,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:17:55,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:55,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:55,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:55,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:17:55,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:55,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:17:55,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:55,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:55,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:55,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:55,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:17:55,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:17:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:55,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:55,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:55,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:17:55,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:55,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 06:17:55,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:55,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:55,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:55,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:55,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:17:55,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 06:17:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:55,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:55,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:55,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:17:55,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:55,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 06:17:55,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:55,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:55,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:55,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 06:17:55,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:17:55,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 06:17:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:55,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:55,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:55,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:17:55,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:55,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 06:17:55,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:55,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:55,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:55,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:17:55,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:17:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 06:17:56,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039475251] [2020-10-13 06:17:56,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:56,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:17:56,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262063711] [2020-10-13 06:17:56,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:17:56,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:56,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:17:56,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:17:56,164 INFO L87 Difference]: Start difference. First operand 196096 states and 237112 transitions. Second operand 7 states. [2020-10-13 06:17:56,504 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:17:57,802 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:18:04,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:18:04,290 INFO L93 Difference]: Finished difference Result 441413 states and 559542 transitions. [2020-10-13 06:18:04,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:18:04,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 305 [2020-10-13 06:18:04,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:18:05,097 INFO L225 Difference]: With dead ends: 441413 [2020-10-13 06:18:05,097 INFO L226 Difference]: Without dead ends: 245651 [2020-10-13 06:18:05,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:18:05,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245651 states. [2020-10-13 06:18:13,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245651 to 239655. [2020-10-13 06:18:13,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239655 states. [2020-10-13 06:18:14,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239655 states to 239655 states and 286315 transitions. [2020-10-13 06:18:14,697 INFO L78 Accepts]: Start accepts. Automaton has 239655 states and 286315 transitions. Word has length 305 [2020-10-13 06:18:14,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:18:14,697 INFO L479 AbstractCegarLoop]: Abstraction has 239655 states and 286315 transitions. [2020-10-13 06:18:14,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:18:14,698 INFO L276 IsEmpty]: Start isEmpty. Operand 239655 states and 286315 transitions. [2020-10-13 06:18:14,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-13 06:18:14,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:14,771 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:18:14,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:18:14,771 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:14,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:14,772 INFO L82 PathProgramCache]: Analyzing trace with hash -217240414, now seen corresponding path program 1 times [2020-10-13 06:18:14,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:14,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395008510] [2020-10-13 06:18:14,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:14,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:15,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:15,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:16,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:17,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:20,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:20,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-13 06:18:20,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:18:20,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5771 [2020-10-13 06:18:20,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:18:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 06:18:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 06:18:20,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0