/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/Problem11_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:05:44,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:05:44,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:05:44,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:05:44,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:05:44,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:05:44,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:05:44,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:05:44,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:05:44,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:05:44,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:05:44,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:05:44,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:05:44,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:05:44,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:05:44,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:05:44,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:05:44,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:05:44,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:05:44,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:05:44,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:05:44,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:05:44,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:05:44,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:05:44,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:05:44,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:05:44,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:05:44,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:05:44,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:05:44,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:05:44,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:05:44,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:05:44,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:05:44,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:05:44,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:05:44,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:05:44,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:05:44,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:05:44,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:05:44,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:05:44,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:05:44,451 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:05:44,473 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:05:44,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:05:44,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:05:44,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:05:44,475 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:05:44,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:05:44,476 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:05:44,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:05:44,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:05:44,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:05:44,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:05:44,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:05:44,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:05:44,477 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:05:44,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:05:44,477 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:05:44,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:05:44,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:05:44,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:05:44,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:05:44,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:05:44,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:05:44,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:05:44,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:05:44,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:05:44,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:05:44,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:05:44,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:05:44,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:05:44,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:05:44,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:05:44,828 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:05:44,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:05:44,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:05:44,833 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:05:44,834 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label11.c [2020-10-13 08:05:44,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d8bdfa2c/619f24ff8ecb44aeaf937382898c6cbe/FLAGc8a46d699 [2020-10-13 08:05:45,506 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:05:45,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label11.c [2020-10-13 08:05:45,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d8bdfa2c/619f24ff8ecb44aeaf937382898c6cbe/FLAGc8a46d699 [2020-10-13 08:05:45,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d8bdfa2c/619f24ff8ecb44aeaf937382898c6cbe [2020-10-13 08:05:45,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:05:45,697 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:05:45,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:05:45,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:05:45,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:05:45,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:05:45" (1/1) ... [2020-10-13 08:05:45,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ad693f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:45, skipping insertion in model container [2020-10-13 08:05:45,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:05:45" (1/1) ... [2020-10-13 08:05:45,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:05:45,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:05:46,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:05:46,643 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:05:47,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:05:47,059 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:05:47,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:47 WrapperNode [2020-10-13 08:05:47,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:05:47,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:05:47,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:05:47,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:05:47,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:47" (1/1) ... [2020-10-13 08:05:47,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:47" (1/1) ... [2020-10-13 08:05:47,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:47" (1/1) ... [2020-10-13 08:05:47,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:47" (1/1) ... [2020-10-13 08:05:47,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:47" (1/1) ... [2020-10-13 08:05:47,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:47" (1/1) ... [2020-10-13 08:05:47,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:47" (1/1) ... [2020-10-13 08:05:47,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:05:47,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:05:47,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:05:47,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:05:47,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:05:47,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:05:47,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:05:47,280 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:05:47,281 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:05:47,281 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:05:47,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:05:47,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:05:47,282 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:05:47,282 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:05:47,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:05:47,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:05:49,125 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:05:49,125 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:05:49,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:05:49 BoogieIcfgContainer [2020-10-13 08:05:49,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:05:49,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:05:49,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:05:49,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:05:49,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:05:45" (1/3) ... [2020-10-13 08:05:49,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644aa11b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:05:49, skipping insertion in model container [2020-10-13 08:05:49,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:47" (2/3) ... [2020-10-13 08:05:49,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644aa11b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:05:49, skipping insertion in model container [2020-10-13 08:05:49,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:05:49" (3/3) ... [2020-10-13 08:05:49,158 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label11.c [2020-10-13 08:05:49,174 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:05:49,190 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:05:49,205 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:05:49,245 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:05:49,246 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:05:49,246 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:05:49,246 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:05:49,247 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:05:49,247 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:05:49,247 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:05:49,247 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:05:49,286 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-13 08:05:49,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 08:05:49,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:05:49,303 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] [2020-10-13 08:05:49,304 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:05:49,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:05:49,311 INFO L82 PathProgramCache]: Analyzing trace with hash -573919190, now seen corresponding path program 1 times [2020-10-13 08:05:49,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:05:49,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071765311] [2020-10-13 08:05:49,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:05:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:49,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:50,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:50,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 08:05:50,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:50,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-10-13 08:05:50,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:50,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:05:50,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:05:50,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:05:50,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:05:50,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:05:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:50,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:50,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:50,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:05:50,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:50,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:05:50,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:50,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:05:50,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:05:50,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:05:50,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:05:50,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:05:50,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071765311] [2020-10-13 08:05:50,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:05:50,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:05:50,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577895835] [2020-10-13 08:05:50,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:05:50,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:05:50,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:05:50,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:05:50,356 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-13 08:05:52,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:05:52,663 INFO L93 Difference]: Finished difference Result 799 states and 1401 transitions. [2020-10-13 08:05:52,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:05:52,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-13 08:05:52,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:05:52,691 INFO L225 Difference]: With dead ends: 799 [2020-10-13 08:05:52,691 INFO L226 Difference]: Without dead ends: 443 [2020-10-13 08:05:52,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:05:52,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-13 08:05:52,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 429. [2020-10-13 08:05:52,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-10-13 08:05:52,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 645 transitions. [2020-10-13 08:05:52,816 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 645 transitions. Word has length 67 [2020-10-13 08:05:52,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:05:52,817 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 645 transitions. [2020-10-13 08:05:52,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:05:52,818 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 645 transitions. [2020-10-13 08:05:52,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-13 08:05:52,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:05:52,833 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:05:52,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:05:52,834 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:05:52,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:05:52,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1129770502, now seen corresponding path program 1 times [2020-10-13 08:05:52,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:05:52,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985392415] [2020-10-13 08:05:52,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:05:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:52,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:53,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:54,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:54,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-13 08:05:54,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:05:54,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1913 [2020-10-13 08:05:54,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:05:54,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 08:05:54,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:05:54,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:05:54,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:05:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:54,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:54,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:54,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:05:54,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:54,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:05:54,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:54,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:05:54,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:05:54,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:05:54,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:05:54,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:05:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:54,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:55,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:55,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:05:55,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:55,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 08:05:55,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:55,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:05:55,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:05:55,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:05:55,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:05:55,100 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:05:55,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985392415] [2020-10-13 08:05:55,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:05:55,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:05:55,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46984671] [2020-10-13 08:05:55,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:05:55,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:05:55,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:05:55,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:05:55,104 INFO L87 Difference]: Start difference. First operand 429 states and 645 transitions. Second operand 5 states. [2020-10-13 08:05:57,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:05:57,192 INFO L93 Difference]: Finished difference Result 1241 states and 1896 transitions. [2020-10-13 08:05:57,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:05:57,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-13 08:05:57,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:05:57,206 INFO L225 Difference]: With dead ends: 1241 [2020-10-13 08:05:57,206 INFO L226 Difference]: Without dead ends: 818 [2020-10-13 08:05:57,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:05:57,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-10-13 08:05:57,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 812. [2020-10-13 08:05:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2020-10-13 08:05:57,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1116 transitions. [2020-10-13 08:05:57,262 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1116 transitions. Word has length 137 [2020-10-13 08:05:57,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:05:57,264 INFO L479 AbstractCegarLoop]: Abstraction has 812 states and 1116 transitions. [2020-10-13 08:05:57,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:05:57,265 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1116 transitions. [2020-10-13 08:05:57,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-13 08:05:57,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:05:57,271 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:05:57,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:05:57,272 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:05:57,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:05:57,272 INFO L82 PathProgramCache]: Analyzing trace with hash -391265842, now seen corresponding path program 1 times [2020-10-13 08:05:57,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:05:57,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301215639] [2020-10-13 08:05:57,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:05:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:57,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:57,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:58,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:58,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:58,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 08:05:58,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:05:58,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1462 [2020-10-13 08:05:58,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:58,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:05:58,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 08:05:58,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 08:05:58,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:05:58,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:05:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:58,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:58,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:58,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:05:58,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:58,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:05:58,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:05:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:05:58,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:05:58,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:05:58,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:05:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:58,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:59,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:59,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 08:05:59,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:59,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 08:05:59,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:59,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:05:59,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:05:59,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:05:59,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:05:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:05:59,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301215639] [2020-10-13 08:05:59,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:05:59,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:05:59,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804560258] [2020-10-13 08:05:59,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:05:59,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:05:59,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:05:59,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:05:59,132 INFO L87 Difference]: Start difference. First operand 812 states and 1116 transitions. Second operand 5 states. [2020-10-13 08:06:00,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:00,693 INFO L93 Difference]: Finished difference Result 1633 states and 2255 transitions. [2020-10-13 08:06:00,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:06:00,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-13 08:06:00,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:00,700 INFO L225 Difference]: With dead ends: 1633 [2020-10-13 08:06:00,701 INFO L226 Difference]: Without dead ends: 818 [2020-10-13 08:06:00,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:06:00,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-10-13 08:06:00,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 812. [2020-10-13 08:06:00,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2020-10-13 08:06:00,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1112 transitions. [2020-10-13 08:06:00,731 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1112 transitions. Word has length 141 [2020-10-13 08:06:00,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:00,731 INFO L479 AbstractCegarLoop]: Abstraction has 812 states and 1112 transitions. [2020-10-13 08:06:00,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:06:00,732 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1112 transitions. [2020-10-13 08:06:00,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-13 08:06:00,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:00,734 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:06:00,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:06:00,735 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:00,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:00,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1377258630, now seen corresponding path program 1 times [2020-10-13 08:06:00,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:00,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818121893] [2020-10-13 08:06:00,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:00,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:00,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:01,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:02,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:02,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:02,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-13 08:06:02,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:06:02,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1568 [2020-10-13 08:06:02,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:02,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:02,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 08:06:02,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 08:06:02,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:02,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:02,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:02,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:02,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:02,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:02,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:06:02,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:02,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:02,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:02,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:02,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:02,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:02,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:02,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:02,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 08:06:02,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:02,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 08:06:02,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:02,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:02,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:02,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 08:06:02,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:06:02,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818121893] [2020-10-13 08:06:02,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:02,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:06:02,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151777235] [2020-10-13 08:06:02,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:06:02,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:02,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:06:02,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:06:02,592 INFO L87 Difference]: Start difference. First operand 812 states and 1112 transitions. Second operand 5 states. [2020-10-13 08:06:04,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:04,302 INFO L93 Difference]: Finished difference Result 1641 states and 2255 transitions. [2020-10-13 08:06:04,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:06:04,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-13 08:06:04,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:04,311 INFO L225 Difference]: With dead ends: 1641 [2020-10-13 08:06:04,311 INFO L226 Difference]: Without dead ends: 818 [2020-10-13 08:06:04,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:06:04,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-10-13 08:06:04,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 812. [2020-10-13 08:06:04,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2020-10-13 08:06:04,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1106 transitions. [2020-10-13 08:06:04,347 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1106 transitions. Word has length 147 [2020-10-13 08:06:04,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:04,348 INFO L479 AbstractCegarLoop]: Abstraction has 812 states and 1106 transitions. [2020-10-13 08:06:04,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:06:04,349 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1106 transitions. [2020-10-13 08:06:04,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-13 08:06:04,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:04,352 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:06:04,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:06:04,353 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:04,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:04,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1235444982, now seen corresponding path program 1 times [2020-10-13 08:06:04,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:04,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167049499] [2020-10-13 08:06:04,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:04,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:04,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:05,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:05,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 08:06:05,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:06:05,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-10-13 08:06:05,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:05,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:05,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 08:06:05,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:06:05,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:05,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:05,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:05,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:05,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:05,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:05,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:06:05,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:05,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:05,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:05,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:05,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:05,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:05,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:05,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:05,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:06:05,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:05,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 08:06:05,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 08:06:05,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:05,462 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:06:05,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167049499] [2020-10-13 08:06:05,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:05,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:06:05,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393136696] [2020-10-13 08:06:05,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:06:05,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:05,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:06:05,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:06:05,464 INFO L87 Difference]: Start difference. First operand 812 states and 1106 transitions. Second operand 5 states. [2020-10-13 08:06:07,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:07,562 INFO L93 Difference]: Finished difference Result 2015 states and 2809 transitions. [2020-10-13 08:06:07,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:06:07,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-13 08:06:07,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:07,571 INFO L225 Difference]: With dead ends: 2015 [2020-10-13 08:06:07,571 INFO L226 Difference]: Without dead ends: 1209 [2020-10-13 08:06:07,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:06:07,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2020-10-13 08:06:07,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1196. [2020-10-13 08:06:07,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2020-10-13 08:06:07,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1586 transitions. [2020-10-13 08:06:07,619 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1586 transitions. Word has length 155 [2020-10-13 08:06:07,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:07,619 INFO L479 AbstractCegarLoop]: Abstraction has 1196 states and 1586 transitions. [2020-10-13 08:06:07,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:06:07,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1586 transitions. [2020-10-13 08:06:07,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-13 08:06:07,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:07,624 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:06:07,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:06:07,625 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:07,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:07,625 INFO L82 PathProgramCache]: Analyzing trace with hash 226155624, now seen corresponding path program 1 times [2020-10-13 08:06:07,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:07,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444305752] [2020-10-13 08:06:07,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:07,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:07,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:08,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:09,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:09,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-13 08:06:09,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:06:09,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1972 [2020-10-13 08:06:09,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:09,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:09,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-13 08:06:09,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 08:06:09,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:09,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:09,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:09,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:09,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:09,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:09,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:06:09,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:09,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:09,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:09,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:09,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:09,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:09,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:10,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:10,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 08:06:10,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:10,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-13 08:06:10,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:10,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 08:06:10,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:06:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:06:10,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444305752] [2020-10-13 08:06:10,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:10,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:06:10,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723974474] [2020-10-13 08:06:10,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:06:10,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:10,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:06:10,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:06:10,163 INFO L87 Difference]: Start difference. First operand 1196 states and 1586 transitions. Second operand 5 states. [2020-10-13 08:06:12,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:12,286 INFO L93 Difference]: Finished difference Result 2405 states and 3202 transitions. [2020-10-13 08:06:12,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:06:12,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2020-10-13 08:06:12,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:12,296 INFO L225 Difference]: With dead ends: 2405 [2020-10-13 08:06:12,296 INFO L226 Difference]: Without dead ends: 1202 [2020-10-13 08:06:12,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:06:12,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2020-10-13 08:06:12,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1196. [2020-10-13 08:06:12,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2020-10-13 08:06:12,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1581 transitions. [2020-10-13 08:06:12,342 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1581 transitions. Word has length 210 [2020-10-13 08:06:12,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:12,343 INFO L479 AbstractCegarLoop]: Abstraction has 1196 states and 1581 transitions. [2020-10-13 08:06:12,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:06:12,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1581 transitions. [2020-10-13 08:06:12,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-13 08:06:12,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:12,347 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:06:12,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:06:12,348 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:12,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:12,348 INFO L82 PathProgramCache]: Analyzing trace with hash 2144293730, now seen corresponding path program 1 times [2020-10-13 08:06:12,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:12,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249353511] [2020-10-13 08:06:12,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:12,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:12,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:12,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:14,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:17,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:17,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:17,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-13 08:06:17,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:06:17,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 08:06:17,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:17,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:06:17,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 08:06:17,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 08:06:17,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:06:17,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:17,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:17,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:17,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:17,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:17,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:06:17,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:17,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:17,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:17,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:17,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:17,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:06:17,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:17,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 08:06:17,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:17,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:17,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:06:17,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:06:17,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 08:06:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:17,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:17,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:18,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:18,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 08:06:18,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:06:18,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-13 08:06:18,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:18,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:18,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:06:18,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 08:06:18,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:18,297 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:06:18,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249353511] [2020-10-13 08:06:18,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:18,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:06:18,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775357533] [2020-10-13 08:06:18,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:06:18,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:18,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:06:18,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:06:18,301 INFO L87 Difference]: Start difference. First operand 1196 states and 1581 transitions. Second operand 7 states. [2020-10-13 08:06:21,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:21,079 INFO L93 Difference]: Finished difference Result 2676 states and 3844 transitions. [2020-10-13 08:06:21,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:06:21,080 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2020-10-13 08:06:21,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:21,092 INFO L225 Difference]: With dead ends: 2676 [2020-10-13 08:06:21,092 INFO L226 Difference]: Without dead ends: 1290 [2020-10-13 08:06:21,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:06:21,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2020-10-13 08:06:21,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1210. [2020-10-13 08:06:21,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-10-13 08:06:21,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1599 transitions. [2020-10-13 08:06:21,157 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1599 transitions. Word has length 225 [2020-10-13 08:06:21,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:21,157 INFO L479 AbstractCegarLoop]: Abstraction has 1210 states and 1599 transitions. [2020-10-13 08:06:21,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:06:21,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1599 transitions. [2020-10-13 08:06:21,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-13 08:06:21,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:21,162 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:06:21,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:06:21,163 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:21,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:21,163 INFO L82 PathProgramCache]: Analyzing trace with hash -285003230, now seen corresponding path program 1 times [2020-10-13 08:06:21,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:21,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624164905] [2020-10-13 08:06:21,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:21,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:21,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:21,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:24,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:26,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:26,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-13 08:06:26,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:06:26,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 08:06:26,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:26,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:26,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-10-13 08:06:26,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:06:26,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:06:26,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:26,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:26,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:26,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:26,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:26,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:06:26,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:26,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:26,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:26,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:26,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:06:26,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:26,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:26,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:26,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:06:26,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:26,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 08:06:26,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:26,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:26,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:26,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:26,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:06:26,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 08:06:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:26,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:26,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:26,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 08:06:26,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:26,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:06:26,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 08:06:26,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:26,787 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-13 08:06:26,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624164905] [2020-10-13 08:06:26,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:26,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:06:26,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587811552] [2020-10-13 08:06:26,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:06:26,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:26,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:06:26,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:06:26,791 INFO L87 Difference]: Start difference. First operand 1210 states and 1599 transitions. Second operand 5 states. [2020-10-13 08:06:28,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:28,761 INFO L93 Difference]: Finished difference Result 2435 states and 3238 transitions. [2020-10-13 08:06:28,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:06:28,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 239 [2020-10-13 08:06:28,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:28,767 INFO L225 Difference]: With dead ends: 2435 [2020-10-13 08:06:28,768 INFO L226 Difference]: Without dead ends: 1216 [2020-10-13 08:06:28,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:06:28,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2020-10-13 08:06:28,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1210. [2020-10-13 08:06:28,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-10-13 08:06:28,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1595 transitions. [2020-10-13 08:06:28,804 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1595 transitions. Word has length 239 [2020-10-13 08:06:28,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:28,805 INFO L479 AbstractCegarLoop]: Abstraction has 1210 states and 1595 transitions. [2020-10-13 08:06:28,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:06:28,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1595 transitions. [2020-10-13 08:06:28,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-13 08:06:28,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:28,810 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:06:28,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:06:28,811 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:28,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:28,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1097206939, now seen corresponding path program 1 times [2020-10-13 08:06:28,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:28,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011298962] [2020-10-13 08:06:28,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:28,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:28,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:29,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:31,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:32,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:32,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-13 08:06:32,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:06:32,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3602 [2020-10-13 08:06:32,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:32,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:32,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-13 08:06:32,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:06:32,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:32,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:32,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:32,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:32,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:32,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:32,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:06:32,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:32,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:32,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:32,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:32,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:32,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:06:32,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:32,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:06:32,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:32,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:32,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:32,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:32,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:06:32,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 08:06:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:32,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:32,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:32,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 08:06:32,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:32,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 08:06:32,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:32,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:32,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:32,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 08:06:32,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:32,820 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-13 08:06:32,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011298962] [2020-10-13 08:06:32,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:32,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:06:32,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148027162] [2020-10-13 08:06:32,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:06:32,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:32,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:06:32,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:06:32,828 INFO L87 Difference]: Start difference. First operand 1210 states and 1595 transitions. Second operand 5 states. [2020-10-13 08:06:34,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:34,981 INFO L93 Difference]: Finished difference Result 3181 states and 4301 transitions. [2020-10-13 08:06:34,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:06:34,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2020-10-13 08:06:34,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:34,992 INFO L225 Difference]: With dead ends: 3181 [2020-10-13 08:06:34,992 INFO L226 Difference]: Without dead ends: 1977 [2020-10-13 08:06:34,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:06:34,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2020-10-13 08:06:35,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1973. [2020-10-13 08:06:35,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1973 states. [2020-10-13 08:06:35,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 2573 transitions. [2020-10-13 08:06:35,043 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 2573 transitions. Word has length 246 [2020-10-13 08:06:35,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:35,044 INFO L479 AbstractCegarLoop]: Abstraction has 1973 states and 2573 transitions. [2020-10-13 08:06:35,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:06:35,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 2573 transitions. [2020-10-13 08:06:35,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-13 08:06:35,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:35,050 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:06:35,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:06:35,051 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:35,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:35,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1745972858, now seen corresponding path program 1 times [2020-10-13 08:06:35,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:35,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737103642] [2020-10-13 08:06:35,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:35,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:35,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:36,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:37,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:37,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-13 08:06:37,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:06:37,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2226 [2020-10-13 08:06:37,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-13 08:06:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:06:37,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:37,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:37,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:37,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:37,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:37,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:37,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:06:37,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:37,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:37,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:37,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:37,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:37,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:37,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:37,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:37,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:06:37,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:37,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:06:37,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:37,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:37,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 08:06:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:37,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:37,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:37,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:06:37,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:37,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 08:06:37,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 08:06:37,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:37,572 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-13 08:06:37,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737103642] [2020-10-13 08:06:37,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:37,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:06:37,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572104881] [2020-10-13 08:06:37,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:06:37,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:37,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:06:37,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:06:37,574 INFO L87 Difference]: Start difference. First operand 1973 states and 2573 transitions. Second operand 5 states. [2020-10-13 08:06:39,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:39,676 INFO L93 Difference]: Finished difference Result 5663 states and 7647 transitions. [2020-10-13 08:06:39,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:06:39,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-10-13 08:06:39,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:39,693 INFO L225 Difference]: With dead ends: 5663 [2020-10-13 08:06:39,694 INFO L226 Difference]: Without dead ends: 3696 [2020-10-13 08:06:39,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:06:39,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2020-10-13 08:06:39,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 3692. [2020-10-13 08:06:39,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3692 states. [2020-10-13 08:06:39,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3692 states to 3692 states and 4839 transitions. [2020-10-13 08:06:39,790 INFO L78 Accepts]: Start accepts. Automaton has 3692 states and 4839 transitions. Word has length 251 [2020-10-13 08:06:39,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:39,791 INFO L479 AbstractCegarLoop]: Abstraction has 3692 states and 4839 transitions. [2020-10-13 08:06:39,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:06:39,791 INFO L276 IsEmpty]: Start isEmpty. Operand 3692 states and 4839 transitions. [2020-10-13 08:06:39,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-13 08:06:39,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:39,801 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:06:39,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:06:39,801 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:39,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:39,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1465296641, now seen corresponding path program 1 times [2020-10-13 08:06:39,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:39,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723048892] [2020-10-13 08:06:39,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:39,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:39,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:41,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:41,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-13 08:06:41,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:06:41,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1260 [2020-10-13 08:06:41,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:41,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:06:41,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:06:41,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 08:06:41,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:41,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:41,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:41,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:41,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:41,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:41,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:06:41,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:41,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:41,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:41,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:06:41,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:41,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:41,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:41,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:41,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:06:41,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:41,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 08:06:41,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:41,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:41,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:06:41,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:06:41,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:41,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 08:06:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:41,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:41,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:41,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 08:06:41,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:41,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 08:06:41,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 08:06:41,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:41,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:06:41,606 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 120 proven. 89 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:06:41,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723048892] [2020-10-13 08:06:41,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:41,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:06:41,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465945355] [2020-10-13 08:06:41,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:06:41,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:41,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:06:41,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:06:41,609 INFO L87 Difference]: Start difference. First operand 3692 states and 4839 transitions. Second operand 7 states. [2020-10-13 08:06:44,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:44,204 INFO L93 Difference]: Finished difference Result 8199 states and 10845 transitions. [2020-10-13 08:06:44,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 08:06:44,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 267 [2020-10-13 08:06:44,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:44,223 INFO L225 Difference]: With dead ends: 8199 [2020-10-13 08:06:44,223 INFO L226 Difference]: Without dead ends: 4513 [2020-10-13 08:06:44,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:06:44,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2020-10-13 08:06:44,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 4122. [2020-10-13 08:06:44,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4122 states. [2020-10-13 08:06:44,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4122 states to 4122 states and 5427 transitions. [2020-10-13 08:06:44,333 INFO L78 Accepts]: Start accepts. Automaton has 4122 states and 5427 transitions. Word has length 267 [2020-10-13 08:06:44,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:44,334 INFO L479 AbstractCegarLoop]: Abstraction has 4122 states and 5427 transitions. [2020-10-13 08:06:44,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:06:44,334 INFO L276 IsEmpty]: Start isEmpty. Operand 4122 states and 5427 transitions. [2020-10-13 08:06:44,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-13 08:06:44,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:44,343 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:06:44,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:06:44,343 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:44,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:44,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1344809239, now seen corresponding path program 1 times [2020-10-13 08:06:44,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:44,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624977712] [2020-10-13 08:06:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:44,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:44,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:44,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:44,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-13 08:06:44,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:06:44,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-10-13 08:06:44,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:44,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:44,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-13 08:06:44,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:06:44,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:45,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:45,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:45,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:45,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:45,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:45,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:06:45,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:45,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:45,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:45,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:45,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:45,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:45,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:45,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:45,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:06:45,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:45,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:06:45,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:45,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:45,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:45,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:45,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:45,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:06:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:45,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:45,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:45,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 08:06:45,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:45,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 08:06:45,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:45,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:45,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:45,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:06:45,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:45,302 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-13 08:06:45,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624977712] [2020-10-13 08:06:45,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:45,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:06:45,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710125609] [2020-10-13 08:06:45,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:06:45,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:45,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:06:45,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:06:45,304 INFO L87 Difference]: Start difference. First operand 4122 states and 5427 transitions. Second operand 5 states. [2020-10-13 08:06:46,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:46,723 INFO L93 Difference]: Finished difference Result 8260 states and 10933 transitions. [2020-10-13 08:06:46,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:06:46,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 294 [2020-10-13 08:06:46,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:46,736 INFO L225 Difference]: With dead ends: 8260 [2020-10-13 08:06:46,737 INFO L226 Difference]: Without dead ends: 4124 [2020-10-13 08:06:46,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:06:46,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4124 states. [2020-10-13 08:06:46,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4124 to 4120. [2020-10-13 08:06:46,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4120 states. [2020-10-13 08:06:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4120 states to 4120 states and 5418 transitions. [2020-10-13 08:06:46,839 INFO L78 Accepts]: Start accepts. Automaton has 4120 states and 5418 transitions. Word has length 294 [2020-10-13 08:06:46,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:46,840 INFO L479 AbstractCegarLoop]: Abstraction has 4120 states and 5418 transitions. [2020-10-13 08:06:46,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:06:46,840 INFO L276 IsEmpty]: Start isEmpty. Operand 4120 states and 5418 transitions. [2020-10-13 08:06:46,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-13 08:06:46,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:46,856 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:06:46,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:06:46,856 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:46,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:46,857 INFO L82 PathProgramCache]: Analyzing trace with hash -2139666137, now seen corresponding path program 1 times [2020-10-13 08:06:46,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:46,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013701647] [2020-10-13 08:06:46,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:46,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:47,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:47,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:49,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:49,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-13 08:06:49,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:06:49,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2622 [2020-10-13 08:06:49,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 08:06:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:06:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:49,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:49,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:49,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:49,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:49,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:49,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:06:49,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:49,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:49,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:49,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:49,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:49,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:49,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:49,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:49,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:06:49,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:49,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 08:06:49,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:49,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:49,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:49,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 08:06:49,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:49,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:06:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:49,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:49,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:49,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:06:49,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:49,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 08:06:49,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:49,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:06:49,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:06:49,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:49,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-13 08:06:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:49,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:50,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:50,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 08:06:50,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:50,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 08:06:50,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 08:06:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:50,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 275 proven. 93 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-13 08:06:50,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013701647] [2020-10-13 08:06:50,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:50,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:06:50,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139007920] [2020-10-13 08:06:50,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:06:50,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:50,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:06:50,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:06:50,117 INFO L87 Difference]: Start difference. First operand 4120 states and 5418 transitions. Second operand 7 states. [2020-10-13 08:06:52,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:52,694 INFO L93 Difference]: Finished difference Result 9012 states and 11790 transitions. [2020-10-13 08:06:52,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:06:52,695 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 383 [2020-10-13 08:06:52,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:52,727 INFO L225 Difference]: With dead ends: 9012 [2020-10-13 08:06:52,727 INFO L226 Difference]: Without dead ends: 4707 [2020-10-13 08:06:52,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:06:52,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4707 states. [2020-10-13 08:06:52,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4707 to 4503. [2020-10-13 08:06:52,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4503 states. [2020-10-13 08:06:52,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4503 states to 4503 states and 5839 transitions. [2020-10-13 08:06:52,847 INFO L78 Accepts]: Start accepts. Automaton has 4503 states and 5839 transitions. Word has length 383 [2020-10-13 08:06:52,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:52,848 INFO L479 AbstractCegarLoop]: Abstraction has 4503 states and 5839 transitions. [2020-10-13 08:06:52,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:06:52,848 INFO L276 IsEmpty]: Start isEmpty. Operand 4503 states and 5839 transitions. [2020-10-13 08:06:52,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-13 08:06:52,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:52,864 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:06:52,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 08:06:52,864 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:52,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:52,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1661921947, now seen corresponding path program 1 times [2020-10-13 08:06:52,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:52,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844668856] [2020-10-13 08:06:52,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:53,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:53,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:53,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:55,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:55,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-13 08:06:55,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:06:55,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2825 [2020-10-13 08:06:55,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:55,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:55,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-13 08:06:55,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:06:55,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:55,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:55,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:55,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:55,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:55,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:55,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:06:55,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:55,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:55,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:55,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:55,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:55,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:06:55,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:55,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 08:06:55,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:55,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:55,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:55,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 08:06:55,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:56,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:06:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:56,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:56,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:56,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:06:56,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:56,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 08:06:56,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:56,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:56,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:06:56,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:06:56,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:56,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-13 08:06:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:56,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:56,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:56,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 08:06:56,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:56,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 08:06:56,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:56,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 08:06:56,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:56,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:56,384 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 275 proven. 93 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-13 08:06:56,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844668856] [2020-10-13 08:06:56,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:56,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:06:56,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334798551] [2020-10-13 08:06:56,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:06:56,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:56,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:06:56,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:06:56,387 INFO L87 Difference]: Start difference. First operand 4503 states and 5839 transitions. Second operand 7 states. [2020-10-13 08:06:58,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:58,974 INFO L93 Difference]: Finished difference Result 9970 states and 12936 transitions. [2020-10-13 08:06:58,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 08:06:58,976 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 393 [2020-10-13 08:06:58,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:58,996 INFO L225 Difference]: With dead ends: 9970 [2020-10-13 08:06:58,997 INFO L226 Difference]: Without dead ends: 5473 [2020-10-13 08:06:59,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:06:59,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5473 states. [2020-10-13 08:06:59,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5473 to 5083. [2020-10-13 08:06:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5083 states. [2020-10-13 08:06:59,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5083 states to 5083 states and 6595 transitions. [2020-10-13 08:06:59,160 INFO L78 Accepts]: Start accepts. Automaton has 5083 states and 6595 transitions. Word has length 393 [2020-10-13 08:06:59,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:59,161 INFO L479 AbstractCegarLoop]: Abstraction has 5083 states and 6595 transitions. [2020-10-13 08:06:59,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:06:59,161 INFO L276 IsEmpty]: Start isEmpty. Operand 5083 states and 6595 transitions. [2020-10-13 08:06:59,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-13 08:06:59,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:59,176 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:06:59,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 08:06:59,177 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:59,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:59,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1925768560, now seen corresponding path program 1 times [2020-10-13 08:06:59,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:59,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942891274] [2020-10-13 08:06:59,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:59,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:59,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:59,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:00,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:02,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:02,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-13 08:07:02,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:07:02,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2757 [2020-10-13 08:07:02,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-10-13 08:07:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:07:02,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:02,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:02,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:02,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:02,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:02,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:02,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:07:02,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:02,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:02,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:02,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:02,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:02,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:02,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:02,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:02,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:07:02,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:02,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:07:02,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:02,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:02,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:02,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:07:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:02,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:02,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:02,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 08:07:02,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:02,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 08:07:02,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:02,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:02,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:02,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 08:07:02,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:02,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-13 08:07:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:02,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:02,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:02,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:02,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 08:07:02,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:07:02,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-13 08:07:02,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:02,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:07:02,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 08:07:02,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:02,884 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-13 08:07:02,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942891274] [2020-10-13 08:07:02,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:02,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:07:02,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558010818] [2020-10-13 08:07:02,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:07:02,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:02,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:07:02,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:07:02,886 INFO L87 Difference]: Start difference. First operand 5083 states and 6595 transitions. Second operand 6 states. [2020-10-13 08:07:04,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:04,973 INFO L93 Difference]: Finished difference Result 10195 states and 13292 transitions. [2020-10-13 08:07:04,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:07:04,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 395 [2020-10-13 08:07:04,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:05,002 INFO L225 Difference]: With dead ends: 10195 [2020-10-13 08:07:05,003 INFO L226 Difference]: Without dead ends: 5100 [2020-10-13 08:07:05,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:07:05,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5100 states. [2020-10-13 08:07:05,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5100 to 5083. [2020-10-13 08:07:05,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5083 states. [2020-10-13 08:07:05,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5083 states to 5083 states and 6571 transitions. [2020-10-13 08:07:05,128 INFO L78 Accepts]: Start accepts. Automaton has 5083 states and 6571 transitions. Word has length 395 [2020-10-13 08:07:05,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:05,128 INFO L479 AbstractCegarLoop]: Abstraction has 5083 states and 6571 transitions. [2020-10-13 08:07:05,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:07:05,128 INFO L276 IsEmpty]: Start isEmpty. Operand 5083 states and 6571 transitions. [2020-10-13 08:07:05,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-13 08:07:05,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:05,141 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:07:05,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 08:07:05,142 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:05,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:05,142 INFO L82 PathProgramCache]: Analyzing trace with hash -712388784, now seen corresponding path program 1 times [2020-10-13 08:07:05,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:05,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343030003] [2020-10-13 08:07:05,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:05,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:05,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:06,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:06,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:07,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:07,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-13 08:07:07,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:07:07,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2232 [2020-10-13 08:07:07,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:07,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:07,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 08:07:07,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 08:07:07,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:07,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:07,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:07,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:07,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:07,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:07,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:07:07,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:07,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:07,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:07,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:07,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:07,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:07,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:07,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:07,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:07:07,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:07,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-13 08:07:07,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:07,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:07,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:07,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:07:07,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:07,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:07:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:07,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:08,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:08,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:07:08,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:08,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-13 08:07:08,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:07:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 08:07:08,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:08,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-13 08:07:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:08,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:08,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:08,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 08:07:08,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:08,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 08:07:08,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:08,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:08,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 08:07:08,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:08,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:08,444 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 283 proven. 101 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-13 08:07:08,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343030003] [2020-10-13 08:07:08,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:08,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:07:08,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890733112] [2020-10-13 08:07:08,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:07:08,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:08,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:07:08,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:07:08,451 INFO L87 Difference]: Start difference. First operand 5083 states and 6571 transitions. Second operand 7 states. [2020-10-13 08:07:11,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:11,890 INFO L93 Difference]: Finished difference Result 11511 states and 15236 transitions. [2020-10-13 08:07:11,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:07:11,891 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 406 [2020-10-13 08:07:11,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:11,911 INFO L225 Difference]: With dead ends: 11511 [2020-10-13 08:07:11,911 INFO L226 Difference]: Without dead ends: 6434 [2020-10-13 08:07:11,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:07:11,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6434 states. [2020-10-13 08:07:12,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6434 to 6236. [2020-10-13 08:07:12,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6236 states. [2020-10-13 08:07:12,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 7969 transitions. [2020-10-13 08:07:12,067 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 7969 transitions. Word has length 406 [2020-10-13 08:07:12,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:12,069 INFO L479 AbstractCegarLoop]: Abstraction has 6236 states and 7969 transitions. [2020-10-13 08:07:12,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:07:12,069 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 7969 transitions. [2020-10-13 08:07:12,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-10-13 08:07:12,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:12,083 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:07:12,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 08:07:12,083 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:12,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:12,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1416541394, now seen corresponding path program 1 times [2020-10-13 08:07:12,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:12,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557320288] [2020-10-13 08:07:12,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:12,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:12,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:12,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:15,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:15,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 428 [2020-10-13 08:07:15,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:07:15,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2986 [2020-10-13 08:07:15,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:15,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-13 08:07:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:07:15,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:15,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:15,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:15,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:15,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:15,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:15,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:07:15,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:15,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:15,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:15,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:15,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:15,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:15,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:15,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:15,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:07:15,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:15,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 08:07:15,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:15,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:15,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:15,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-13 08:07:15,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:15,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:07:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:15,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:15,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:15,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:07:15,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:15,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-13 08:07:15,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:15,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:15,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:07:15,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:07:15,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:15,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-13 08:07:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:15,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:15,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:15,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 08:07:15,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:15,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:07:15,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:15,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:15,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 08:07:15,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:15,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:15,957 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 275 proven. 93 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-13 08:07:15,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557320288] [2020-10-13 08:07:15,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:15,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:07:15,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572383871] [2020-10-13 08:07:15,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:07:15,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:15,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:07:15,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:07:15,959 INFO L87 Difference]: Start difference. First operand 6236 states and 7969 transitions. Second operand 7 states. [2020-10-13 08:07:18,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:18,731 INFO L93 Difference]: Finished difference Result 13267 states and 17097 transitions. [2020-10-13 08:07:18,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:07:18,732 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 414 [2020-10-13 08:07:18,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:18,755 INFO L225 Difference]: With dead ends: 13267 [2020-10-13 08:07:18,756 INFO L226 Difference]: Without dead ends: 7037 [2020-10-13 08:07:18,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:07:18,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7037 states. [2020-10-13 08:07:18,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7037 to 6632. [2020-10-13 08:07:18,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6632 states. [2020-10-13 08:07:18,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6632 states to 6632 states and 8457 transitions. [2020-10-13 08:07:18,902 INFO L78 Accepts]: Start accepts. Automaton has 6632 states and 8457 transitions. Word has length 414 [2020-10-13 08:07:18,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:18,902 INFO L479 AbstractCegarLoop]: Abstraction has 6632 states and 8457 transitions. [2020-10-13 08:07:18,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:07:18,903 INFO L276 IsEmpty]: Start isEmpty. Operand 6632 states and 8457 transitions. [2020-10-13 08:07:18,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-13 08:07:18,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:18,917 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:07:18,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 08:07:18,917 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:18,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:18,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1373360669, now seen corresponding path program 1 times [2020-10-13 08:07:18,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:18,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680583761] [2020-10-13 08:07:18,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:19,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:19,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:19,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:19,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:23,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:23,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-13 08:07:23,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:07:23,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4666 [2020-10-13 08:07:23,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:23,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:23,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-13 08:07:23,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 08:07:23,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:23,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:23,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:23,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:23,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:23,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:23,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:07:23,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:23,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:23,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:23,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:23,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:23,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:07:23,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:23,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:07:23,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:23,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:23,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:23,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:23,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:23,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:07:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:23,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:23,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:23,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 08:07:23,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:23,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 08:07:23,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:23,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:23,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:23,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:07:23,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:23,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-13 08:07:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:24,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:24,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:24,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:24,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 08:07:24,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:07:24,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-13 08:07:24,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:07:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 08:07:24,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:24,937 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 391 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-13 08:07:24,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680583761] [2020-10-13 08:07:24,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:24,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:07:24,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532481676] [2020-10-13 08:07:24,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:07:24,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:24,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:07:24,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:07:24,940 INFO L87 Difference]: Start difference. First operand 6632 states and 8457 transitions. Second operand 6 states. [2020-10-13 08:07:27,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:27,197 INFO L93 Difference]: Finished difference Result 13289 states and 17009 transitions. [2020-10-13 08:07:27,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:07:27,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 419 [2020-10-13 08:07:27,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:27,217 INFO L225 Difference]: With dead ends: 13289 [2020-10-13 08:07:27,217 INFO L226 Difference]: Without dead ends: 6649 [2020-10-13 08:07:27,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:07:27,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6649 states. [2020-10-13 08:07:27,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6649 to 6630. [2020-10-13 08:07:27,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6630 states. [2020-10-13 08:07:27,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6630 states to 6630 states and 8440 transitions. [2020-10-13 08:07:27,362 INFO L78 Accepts]: Start accepts. Automaton has 6630 states and 8440 transitions. Word has length 419 [2020-10-13 08:07:27,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:27,362 INFO L479 AbstractCegarLoop]: Abstraction has 6630 states and 8440 transitions. [2020-10-13 08:07:27,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:07:27,363 INFO L276 IsEmpty]: Start isEmpty. Operand 6630 states and 8440 transitions. [2020-10-13 08:07:27,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-10-13 08:07:27,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:27,378 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:07:27,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 08:07:27,378 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:27,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:27,379 INFO L82 PathProgramCache]: Analyzing trace with hash 720099790, now seen corresponding path program 1 times [2020-10-13 08:07:27,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:27,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346684872] [2020-10-13 08:07:27,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:27,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:27,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:27,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-13 08:07:27,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:27,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-13 08:07:27,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 08:07:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 08:07:27,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:28,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:28,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:28,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:28,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:28,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:28,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:07:28,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:28,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:28,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:28,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:28,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:28,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:28,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:07:28,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:28,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:07:28,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:28,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:28,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:07:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:28,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:28,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:28,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:07:28,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:28,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 08:07:28,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:28,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:28,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:28,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-13 08:07:28,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:28,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 08:07:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:28,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:28,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:28,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 08:07:28,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:28,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 08:07:28,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:07:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 08:07:28,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 391 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-13 08:07:28,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346684872] [2020-10-13 08:07:28,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:28,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:07:28,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204561309] [2020-10-13 08:07:28,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:07:28,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:28,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:07:28,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:07:28,422 INFO L87 Difference]: Start difference. First operand 6630 states and 8440 transitions. Second operand 7 states. [2020-10-13 08:07:31,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:31,252 INFO L93 Difference]: Finished difference Result 14999 states and 19115 transitions. [2020-10-13 08:07:31,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:07:31,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 420 [2020-10-13 08:07:31,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:31,271 INFO L225 Difference]: With dead ends: 14999 [2020-10-13 08:07:31,271 INFO L226 Difference]: Without dead ends: 8183 [2020-10-13 08:07:31,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:07:31,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8183 states. [2020-10-13 08:07:31,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8183 to 7799. [2020-10-13 08:07:31,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7799 states. [2020-10-13 08:07:31,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7799 states to 7799 states and 9883 transitions. [2020-10-13 08:07:31,532 INFO L78 Accepts]: Start accepts. Automaton has 7799 states and 9883 transitions. Word has length 420 [2020-10-13 08:07:31,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:31,533 INFO L479 AbstractCegarLoop]: Abstraction has 7799 states and 9883 transitions. [2020-10-13 08:07:31,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:07:31,533 INFO L276 IsEmpty]: Start isEmpty. Operand 7799 states and 9883 transitions. [2020-10-13 08:07:31,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2020-10-13 08:07:31,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:31,548 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:07:31,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 08:07:31,548 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:31,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:31,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1646859556, now seen corresponding path program 1 times [2020-10-13 08:07:31,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:31,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776301982] [2020-10-13 08:07:31,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:31,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:32,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:32,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 442 [2020-10-13 08:07:32,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:32,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-13 08:07:32,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 08:07:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 08:07:32,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:32,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:32,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:32,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:32,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:32,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:32,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:07:32,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:32,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:32,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:32,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:32,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:32,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:32,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:32,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:07:32,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:32,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:07:32,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:32,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:32,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:32,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:32,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:32,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:07:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:32,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:32,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:32,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:07:32,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:32,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 08:07:32,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:32,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:32,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:32,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-13 08:07:32,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:32,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 08:07:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:32,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:32,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:32,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:07:32,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:32,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 08:07:32,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:32,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:32,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:07:32,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 08:07:32,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-13 08:07:32,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776301982] [2020-10-13 08:07:32,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:32,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:07:32,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512565310] [2020-10-13 08:07:32,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:07:32,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:32,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:07:32,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:07:32,693 INFO L87 Difference]: Start difference. First operand 7799 states and 9883 transitions. Second operand 7 states. [2020-10-13 08:07:35,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:35,659 INFO L93 Difference]: Finished difference Result 15985 states and 20283 transitions. [2020-10-13 08:07:35,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:07:35,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 428 [2020-10-13 08:07:35,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:35,679 INFO L225 Difference]: With dead ends: 15985 [2020-10-13 08:07:35,679 INFO L226 Difference]: Without dead ends: 8192 [2020-10-13 08:07:35,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:07:35,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8192 states. [2020-10-13 08:07:35,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8192 to 8179. [2020-10-13 08:07:35,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8179 states. [2020-10-13 08:07:35,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8179 states to 8179 states and 10320 transitions. [2020-10-13 08:07:35,845 INFO L78 Accepts]: Start accepts. Automaton has 8179 states and 10320 transitions. Word has length 428 [2020-10-13 08:07:35,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:35,845 INFO L479 AbstractCegarLoop]: Abstraction has 8179 states and 10320 transitions. [2020-10-13 08:07:35,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:07:35,846 INFO L276 IsEmpty]: Start isEmpty. Operand 8179 states and 10320 transitions. [2020-10-13 08:07:35,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-10-13 08:07:35,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:35,870 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:07:35,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 08:07:35,871 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:35,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:35,871 INFO L82 PathProgramCache]: Analyzing trace with hash -281235981, now seen corresponding path program 1 times [2020-10-13 08:07:35,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:35,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011652004] [2020-10-13 08:07:35,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:36,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:36,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:36,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:37,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:38,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:38,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 457 [2020-10-13 08:07:38,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:07:38,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2511 [2020-10-13 08:07:38,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-13 08:07:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 08:07:38,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:38,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:38,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:38,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:38,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:38,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:38,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:07:38,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:38,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:38,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:38,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:38,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:38,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:07:38,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:38,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 08:07:38,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:38,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:38,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:38,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:38,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:38,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:07:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:38,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:38,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:38,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 08:07:38,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:38,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-13 08:07:38,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:38,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:38,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:38,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-13 08:07:38,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:39,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-13 08:07:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:39,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:39,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:39,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:39,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 08:07:39,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:07:39,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-13 08:07:39,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:39,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:39,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:07:39,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 08:07:39,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:40,384 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 391 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-13 08:07:40,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011652004] [2020-10-13 08:07:40,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:40,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:07:40,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542702430] [2020-10-13 08:07:40,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:07:40,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:40,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:07:40,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:07:40,386 INFO L87 Difference]: Start difference. First operand 8179 states and 10320 transitions. Second operand 6 states. [2020-10-13 08:07:42,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:42,436 INFO L93 Difference]: Finished difference Result 16391 states and 20751 transitions. [2020-10-13 08:07:42,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:07:42,438 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 443 [2020-10-13 08:07:42,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:42,456 INFO L225 Difference]: With dead ends: 16391 [2020-10-13 08:07:42,456 INFO L226 Difference]: Without dead ends: 8201 [2020-10-13 08:07:42,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:07:42,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8201 states. [2020-10-13 08:07:42,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8201 to 8179. [2020-10-13 08:07:42,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8179 states. [2020-10-13 08:07:42,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8179 states to 8179 states and 10300 transitions. [2020-10-13 08:07:42,613 INFO L78 Accepts]: Start accepts. Automaton has 8179 states and 10300 transitions. Word has length 443 [2020-10-13 08:07:42,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:42,613 INFO L479 AbstractCegarLoop]: Abstraction has 8179 states and 10300 transitions. [2020-10-13 08:07:42,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:07:42,614 INFO L276 IsEmpty]: Start isEmpty. Operand 8179 states and 10300 transitions. [2020-10-13 08:07:42,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-10-13 08:07:42,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:42,626 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:07:42,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 08:07:42,627 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:42,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:42,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1172630787, now seen corresponding path program 1 times [2020-10-13 08:07:42,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:42,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521516737] [2020-10-13 08:07:42,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:42,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:42,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:43,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:45,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:45,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-10-13 08:07:45,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:07:45,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2853 [2020-10-13 08:07:45,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:45,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:45,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-13 08:07:45,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:07:45,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:45,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:45,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:45,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:45,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:45,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:45,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:07:45,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:45,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:45,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:45,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:45,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:45,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:45,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:45,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:45,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 08:07:45,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:45,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-13 08:07:45,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:07:45,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:46,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-13 08:07:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:46,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:46,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:46,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:07:46,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:46,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-13 08:07:46,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:46,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:46,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:07:46,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:07:46,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-13 08:07:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:46,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:46,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:46,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 08:07:46,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:46,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 08:07:46,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 08:07:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:46,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:47,112 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 275 proven. 93 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-13 08:07:47,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521516737] [2020-10-13 08:07:47,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:47,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:07:47,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749280131] [2020-10-13 08:07:47,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:07:47,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:47,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:07:47,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:07:47,116 INFO L87 Difference]: Start difference. First operand 8179 states and 10300 transitions. Second operand 7 states. [2020-10-13 08:07:50,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:50,702 INFO L93 Difference]: Finished difference Result 17702 states and 22167 transitions. [2020-10-13 08:07:50,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:07:50,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 452 [2020-10-13 08:07:50,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:50,728 INFO L225 Difference]: With dead ends: 17702 [2020-10-13 08:07:50,728 INFO L226 Difference]: Without dead ends: 9529 [2020-10-13 08:07:50,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:07:50,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9529 states. [2020-10-13 08:07:50,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9529 to 9135. [2020-10-13 08:07:50,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9135 states. [2020-10-13 08:07:50,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9135 states to 9135 states and 11303 transitions. [2020-10-13 08:07:50,912 INFO L78 Accepts]: Start accepts. Automaton has 9135 states and 11303 transitions. Word has length 452 [2020-10-13 08:07:50,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:50,912 INFO L479 AbstractCegarLoop]: Abstraction has 9135 states and 11303 transitions. [2020-10-13 08:07:50,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:07:50,912 INFO L276 IsEmpty]: Start isEmpty. Operand 9135 states and 11303 transitions. [2020-10-13 08:07:50,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-10-13 08:07:50,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:50,925 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-13 08:07:50,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 08:07:50,928 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:50,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:50,929 INFO L82 PathProgramCache]: Analyzing trace with hash 2113462826, now seen corresponding path program 1 times [2020-10-13 08:07:50,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:50,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488040243] [2020-10-13 08:07:50,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:51,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:51,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:51,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:54,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:54,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 488 [2020-10-13 08:07:54,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:07:54,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3251 [2020-10-13 08:07:54,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-13 08:07:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:07:54,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:54,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:54,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:54,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:54,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:54,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:54,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:07:54,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:54,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:54,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:54,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:54,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:54,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:54,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:54,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:54,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:07:54,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:54,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 08:07:54,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:54,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:54,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:54,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:07:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:54,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:54,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:54,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 08:07:54,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:54,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 08:07:54,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:54,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:07:54,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:54,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-13 08:07:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:54,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:54,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:54,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:07:54,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:54,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-13 08:07:54,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:54,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:54,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:07:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:07:54,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:55,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-10-13 08:07:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:55,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:55,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:55,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 08:07:55,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:55,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 08:07:55,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:55,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:55,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 08:07:55,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:55,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:56,057 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 430 proven. 93 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-13 08:07:56,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488040243] [2020-10-13 08:07:56,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:56,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:07:56,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287536777] [2020-10-13 08:07:56,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:07:56,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:56,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:07:56,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:07:56,069 INFO L87 Difference]: Start difference. First operand 9135 states and 11303 transitions. Second operand 8 states. [2020-10-13 08:07:59,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:59,845 INFO L93 Difference]: Finished difference Result 18658 states and 23155 transitions. [2020-10-13 08:07:59,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 08:07:59,846 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 472 [2020-10-13 08:07:59,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:59,865 INFO L225 Difference]: With dead ends: 18658 [2020-10-13 08:07:59,865 INFO L226 Difference]: Without dead ends: 9529 [2020-10-13 08:07:59,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-13 08:07:59,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9529 states. [2020-10-13 08:08:00,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9529 to 8571. [2020-10-13 08:08:00,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8571 states. [2020-10-13 08:08:00,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8571 states to 8571 states and 10192 transitions. [2020-10-13 08:08:00,031 INFO L78 Accepts]: Start accepts. Automaton has 8571 states and 10192 transitions. Word has length 472 [2020-10-13 08:08:00,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:00,032 INFO L479 AbstractCegarLoop]: Abstraction has 8571 states and 10192 transitions. [2020-10-13 08:08:00,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:08:00,032 INFO L276 IsEmpty]: Start isEmpty. Operand 8571 states and 10192 transitions. [2020-10-13 08:08:00,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2020-10-13 08:08:00,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:00,045 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:00,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 08:08:00,046 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:00,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:00,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1852864943, now seen corresponding path program 1 times [2020-10-13 08:08:00,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:00,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262934664] [2020-10-13 08:08:00,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:00,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:00,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:02,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:02,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 529 [2020-10-13 08:08:02,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:08:02,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2359 [2020-10-13 08:08:02,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:02,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:02,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 346 [2020-10-13 08:08:02,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 08:08:02,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:02,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:02,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:02,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:02,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:02,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:02,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:02,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:02,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:02,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:02,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:02,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:02,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:02,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:02,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:02,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:08:02,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:02,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:08:02,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:02,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:02,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:02,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:02,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:02,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:08:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:02,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:02,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:02,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:08:02,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:02,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 08:08:02,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:02,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:02,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:02,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:02,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:02,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 08:08:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:02,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:02,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:02,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 08:08:02,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:02,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 08:08:02,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:02,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:02,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:02,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 08:08:02,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:02,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-13 08:08:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:02,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:02,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:02,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:08:02,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:02,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:08:02,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:02,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:02,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:02,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 08:08:02,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:03,082 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 550 proven. 2 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-13 08:08:03,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262934664] [2020-10-13 08:08:03,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:03,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:08:03,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145408383] [2020-10-13 08:08:03,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:08:03,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:03,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:08:03,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:08:03,085 INFO L87 Difference]: Start difference. First operand 8571 states and 10192 transitions. Second operand 7 states. [2020-10-13 08:08:07,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:07,250 INFO L93 Difference]: Finished difference Result 21875 states and 26137 transitions. [2020-10-13 08:08:07,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:08:07,251 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 513 [2020-10-13 08:08:07,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:07,282 INFO L225 Difference]: With dead ends: 21875 [2020-10-13 08:08:07,282 INFO L226 Difference]: Without dead ends: 12736 [2020-10-13 08:08:07,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:08:07,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12736 states. [2020-10-13 08:08:07,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12736 to 12162. [2020-10-13 08:08:07,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12162 states. [2020-10-13 08:08:07,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12162 states to 12162 states and 14355 transitions. [2020-10-13 08:08:07,498 INFO L78 Accepts]: Start accepts. Automaton has 12162 states and 14355 transitions. Word has length 513 [2020-10-13 08:08:07,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:07,499 INFO L479 AbstractCegarLoop]: Abstraction has 12162 states and 14355 transitions. [2020-10-13 08:08:07,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:08:07,499 INFO L276 IsEmpty]: Start isEmpty. Operand 12162 states and 14355 transitions. [2020-10-13 08:08:07,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2020-10-13 08:08:07,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:07,510 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:07,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 08:08:07,510 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:07,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:07,511 INFO L82 PathProgramCache]: Analyzing trace with hash -321387673, now seen corresponding path program 1 times [2020-10-13 08:08:07,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:07,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031564233] [2020-10-13 08:08:07,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:07,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:07,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:09,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:12,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:12,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 545 [2020-10-13 08:08:12,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:08:12,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-13 08:08:12,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 362 [2020-10-13 08:08:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 08:08:12,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:12,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:12,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:12,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:12,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:12,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:12,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:08:12,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:12,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:12,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:12,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:12,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:12,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:12,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:12,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:12,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:08:12,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:12,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:08:12,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:12,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:12,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:08:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:12,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:12,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:12,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:08:12,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:12,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:08:12,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:12,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:12,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:12,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:12,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:12,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-13 08:08:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:12,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:12,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:12,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 08:08:12,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:12,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 08:08:12,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:12,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:12,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:12,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-13 08:08:12,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:12,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-13 08:08:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:12,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:13,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:13,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:08:13,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:13,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 08:08:13,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 08:08:13,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:13,310 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 551 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-13 08:08:13,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031564233] [2020-10-13 08:08:13,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:13,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:08:13,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998248784] [2020-10-13 08:08:13,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:08:13,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:13,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:08:13,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:08:13,312 INFO L87 Difference]: Start difference. First operand 12162 states and 14355 transitions. Second operand 7 states. [2020-10-13 08:08:16,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:16,002 INFO L93 Difference]: Finished difference Result 23005 states and 27222 transitions. [2020-10-13 08:08:16,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:08:16,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 529 [2020-10-13 08:08:16,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:16,031 INFO L225 Difference]: With dead ends: 23005 [2020-10-13 08:08:16,032 INFO L226 Difference]: Without dead ends: 13119 [2020-10-13 08:08:16,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:08:16,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13119 states. [2020-10-13 08:08:16,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13119 to 12922. [2020-10-13 08:08:16,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12922 states. [2020-10-13 08:08:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12922 states to 12922 states and 15178 transitions. [2020-10-13 08:08:16,240 INFO L78 Accepts]: Start accepts. Automaton has 12922 states and 15178 transitions. Word has length 529 [2020-10-13 08:08:16,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:16,241 INFO L479 AbstractCegarLoop]: Abstraction has 12922 states and 15178 transitions. [2020-10-13 08:08:16,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:08:16,241 INFO L276 IsEmpty]: Start isEmpty. Operand 12922 states and 15178 transitions. [2020-10-13 08:08:16,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2020-10-13 08:08:16,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:16,252 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:16,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 08:08:16,253 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:16,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:16,253 INFO L82 PathProgramCache]: Analyzing trace with hash 531441176, now seen corresponding path program 1 times [2020-10-13 08:08:16,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:16,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341123413] [2020-10-13 08:08:16,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:16,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:16,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:16,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:18,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:18,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:21,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:21,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 546 [2020-10-13 08:08:21,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:08:21,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-13 08:08:21,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:21,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:08:21,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 361 [2020-10-13 08:08:21,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 08:08:21,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:21,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:21,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:21,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:21,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:21,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:21,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:21,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:21,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:21,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:21,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:21,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:21,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:21,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:08:21,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:21,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:08:21,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:21,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:21,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:21,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:21,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:21,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:08:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:21,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:21,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:21,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:08:21,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:21,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:08:21,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:21,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:21,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-13 08:08:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:21,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:21,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:21,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 08:08:21,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:21,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 08:08:21,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:21,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 08:08:21,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:21,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-13 08:08:21,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:21,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-13 08:08:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:21,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:21,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:21,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:08:21,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:21,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 08:08:21,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:21,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:21,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 08:08:21,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:22,211 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 551 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-13 08:08:22,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341123413] [2020-10-13 08:08:22,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:22,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:08:22,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594289124] [2020-10-13 08:08:22,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:08:22,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:22,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:08:22,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:08:22,213 INFO L87 Difference]: Start difference. First operand 12922 states and 15178 transitions. Second operand 8 states. [2020-10-13 08:08:26,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:26,537 INFO L93 Difference]: Finished difference Result 26604 states and 31294 transitions. [2020-10-13 08:08:26,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 08:08:26,538 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 530 [2020-10-13 08:08:26,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:26,559 INFO L225 Difference]: With dead ends: 26604 [2020-10-13 08:08:26,559 INFO L226 Difference]: Without dead ends: 13874 [2020-10-13 08:08:26,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-13 08:08:26,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13874 states. [2020-10-13 08:08:26,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13874 to 13484. [2020-10-13 08:08:26,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13484 states. [2020-10-13 08:08:26,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13484 states to 13484 states and 15638 transitions. [2020-10-13 08:08:26,748 INFO L78 Accepts]: Start accepts. Automaton has 13484 states and 15638 transitions. Word has length 530 [2020-10-13 08:08:26,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:26,749 INFO L479 AbstractCegarLoop]: Abstraction has 13484 states and 15638 transitions. [2020-10-13 08:08:26,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:08:26,749 INFO L276 IsEmpty]: Start isEmpty. Operand 13484 states and 15638 transitions. [2020-10-13 08:08:26,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-10-13 08:08:26,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:26,760 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 08:08:26,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 08:08:26,760 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:26,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:26,761 INFO L82 PathProgramCache]: Analyzing trace with hash -628917218, now seen corresponding path program 1 times [2020-10-13 08:08:26,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:26,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464638839] [2020-10-13 08:08:26,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:26,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:26,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:28,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:28,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 565 [2020-10-13 08:08:28,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:08:28,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1584 [2020-10-13 08:08:28,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:28,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:28,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 390 [2020-10-13 08:08:28,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 08:08:28,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:28,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:28,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:28,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:28,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:28,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:28,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:28,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:28,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:28,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:28,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:28,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:28,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:28,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:28,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:28,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:08:28,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:28,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:08:28,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:28,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:28,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:28,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:28,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:28,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:08:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:28,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:28,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:28,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 08:08:28,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:28,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 08:08:28,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:28,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:28,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:28,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:28,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-13 08:08:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:28,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:28,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:28,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 08:08:28,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:28,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 08:08:28,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:28,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:28,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:28,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 08:08:28,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:28,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-13 08:08:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:28,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:28,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:28,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 08:08:28,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:28,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 08:08:28,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:28,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:28,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:28,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 08:08:28,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 559 proven. 2 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2020-10-13 08:08:28,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464638839] [2020-10-13 08:08:28,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:28,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:08:28,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379344675] [2020-10-13 08:08:28,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:08:28,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:28,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:08:28,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:08:28,999 INFO L87 Difference]: Start difference. First operand 13484 states and 15638 transitions. Second operand 7 states. [2020-10-13 08:08:32,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:32,537 INFO L93 Difference]: Finished difference Result 27023 states and 31604 transitions. [2020-10-13 08:08:32,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:08:32,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 549 [2020-10-13 08:08:32,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:32,562 INFO L225 Difference]: With dead ends: 27023 [2020-10-13 08:08:32,562 INFO L226 Difference]: Without dead ends: 13733 [2020-10-13 08:08:32,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:08:32,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13733 states. [2020-10-13 08:08:32,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13733 to 13689. [2020-10-13 08:08:32,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13689 states. [2020-10-13 08:08:32,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13689 states to 13689 states and 15535 transitions. [2020-10-13 08:08:32,796 INFO L78 Accepts]: Start accepts. Automaton has 13689 states and 15535 transitions. Word has length 549 [2020-10-13 08:08:32,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:32,796 INFO L479 AbstractCegarLoop]: Abstraction has 13689 states and 15535 transitions. [2020-10-13 08:08:32,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:08:32,797 INFO L276 IsEmpty]: Start isEmpty. Operand 13689 states and 15535 transitions. [2020-10-13 08:08:32,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2020-10-13 08:08:32,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:32,813 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:32,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 08:08:32,814 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:32,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:32,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1713272505, now seen corresponding path program 1 times [2020-10-13 08:08:32,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:32,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531873109] [2020-10-13 08:08:32,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:32,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:33,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:33,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:34,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:37,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:37,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 569 [2020-10-13 08:08:37,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:08:37,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-13 08:08:37,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:37,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:37,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 502 [2020-10-13 08:08:37,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:08:37,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:38,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:38,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:38,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:38,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:38,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:38,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:38,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:38,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:38,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:38,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:38,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:38,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:38,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:38,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:38,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:08:38,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:38,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 08:08:38,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:38,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:38,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:38,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:38,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:38,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:08:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:38,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:38,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:38,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:08:38,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:38,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 08:08:38,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:38,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:38,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:38,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:38,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:38,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-13 08:08:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:38,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:38,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:38,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 08:08:38,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:38,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 08:08:38,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:38,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:38,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:38,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:38,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:38,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-13 08:08:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:38,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:38,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:38,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 08:08:38,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:38,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 08:08:38,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 08:08:38,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 245 proven. 4 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2020-10-13 08:08:38,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531873109] [2020-10-13 08:08:38,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:38,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:08:38,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031450238] [2020-10-13 08:08:38,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:08:38,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:38,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:08:38,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:08:38,535 INFO L87 Difference]: Start difference. First operand 13689 states and 15535 transitions. Second operand 5 states. [2020-10-13 08:08:41,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:41,143 INFO L93 Difference]: Finished difference Result 26844 states and 30553 transitions. [2020-10-13 08:08:41,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:08:41,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 553 [2020-10-13 08:08:41,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:41,171 INFO L225 Difference]: With dead ends: 26844 [2020-10-13 08:08:41,171 INFO L226 Difference]: Without dead ends: 15805 [2020-10-13 08:08:41,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:08:41,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15805 states. [2020-10-13 08:08:41,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15805 to 14467. [2020-10-13 08:08:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14467 states. [2020-10-13 08:08:41,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14467 states to 14467 states and 16346 transitions. [2020-10-13 08:08:41,405 INFO L78 Accepts]: Start accepts. Automaton has 14467 states and 16346 transitions. Word has length 553 [2020-10-13 08:08:41,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:41,405 INFO L479 AbstractCegarLoop]: Abstraction has 14467 states and 16346 transitions. [2020-10-13 08:08:41,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:08:41,406 INFO L276 IsEmpty]: Start isEmpty. Operand 14467 states and 16346 transitions. [2020-10-13 08:08:41,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2020-10-13 08:08:41,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:41,427 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-13 08:08:41,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 08:08:41,427 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:41,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:41,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1779383596, now seen corresponding path program 1 times [2020-10-13 08:08:41,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:41,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198183721] [2020-10-13 08:08:41,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:41,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:42,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:42,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 573 [2020-10-13 08:08:42,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:42,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-10-13 08:08:42,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:42,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:42,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-13 08:08:42,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 08:08:42,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:42,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:42,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:42,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:42,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:42,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:42,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:42,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:42,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:42,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:42,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:42,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:42,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:42,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:42,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:42,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:08:42,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:42,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:08:42,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:42,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:42,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:42,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:42,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:42,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:08:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:42,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:42,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:42,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 08:08:42,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:42,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 08:08:42,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-13 08:08:42,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:42,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-13 08:08:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:42,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:42,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:42,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 08:08:42,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:42,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 08:08:42,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:42,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:42,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:42,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 08:08:42,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:42,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-13 08:08:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:42,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:42,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:42,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:08:42,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:42,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 08:08:42,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:42,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:42,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 08:08:42,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:42,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 461 proven. 106 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2020-10-13 08:08:43,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198183721] [2020-10-13 08:08:43,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:43,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:08:43,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152885597] [2020-10-13 08:08:43,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:08:43,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:43,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:08:43,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:08:43,215 INFO L87 Difference]: Start difference. First operand 14467 states and 16346 transitions. Second operand 8 states. [2020-10-13 08:08:47,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:47,058 INFO L93 Difference]: Finished difference Result 29521 states and 33358 transitions. [2020-10-13 08:08:47,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:08:47,059 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 557 [2020-10-13 08:08:47,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:47,085 INFO L225 Difference]: With dead ends: 29521 [2020-10-13 08:08:47,086 INFO L226 Difference]: Without dead ends: 15436 [2020-10-13 08:08:47,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:08:47,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15436 states. [2020-10-13 08:08:47,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15436 to 15033. [2020-10-13 08:08:47,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15033 states. [2020-10-13 08:08:47,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15033 states to 15033 states and 16943 transitions. [2020-10-13 08:08:47,325 INFO L78 Accepts]: Start accepts. Automaton has 15033 states and 16943 transitions. Word has length 557 [2020-10-13 08:08:47,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:47,326 INFO L479 AbstractCegarLoop]: Abstraction has 15033 states and 16943 transitions. [2020-10-13 08:08:47,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:08:47,326 INFO L276 IsEmpty]: Start isEmpty. Operand 15033 states and 16943 transitions. [2020-10-13 08:08:47,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2020-10-13 08:08:47,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:47,342 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-13 08:08:47,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 08:08:47,342 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:47,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:47,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1047147712, now seen corresponding path program 1 times [2020-10-13 08:08:47,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:47,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813789808] [2020-10-13 08:08:47,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:47,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:47,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:49,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:49,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 576 [2020-10-13 08:08:49,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:08:49,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2047 [2020-10-13 08:08:49,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:49,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:49,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-13 08:08:49,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 08:08:49,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:49,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:49,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:49,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:49,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:49,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:49,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:49,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:49,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:49,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:49,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:49,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:49,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:49,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:49,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:08:49,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:49,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 08:08:49,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:49,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:49,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:49,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:49,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:49,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:08:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:49,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:49,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:49,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 08:08:49,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:49,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 08:08:49,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:49,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:49,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-13 08:08:49,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:49,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-13 08:08:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:49,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:49,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:49,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:08:49,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:49,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 08:08:49,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:49,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:49,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 08:08:49,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:50,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-10-13 08:08:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:50,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:50,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:50,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:08:50,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:50,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 08:08:50,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:50,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:50,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 08:08:50,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:50,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:50,291 INFO L134 CoverageAnalysis]: Checked inductivity of 923 backedges. 467 proven. 109 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2020-10-13 08:08:50,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813789808] [2020-10-13 08:08:50,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:50,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:08:50,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625756929] [2020-10-13 08:08:50,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:08:50,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:50,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:08:50,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:08:50,293 INFO L87 Difference]: Start difference. First operand 15033 states and 16943 transitions. Second operand 7 states. [2020-10-13 08:08:53,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:53,744 INFO L93 Difference]: Finished difference Result 27309 states and 31003 transitions. [2020-10-13 08:08:53,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:08:53,746 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 560 [2020-10-13 08:08:53,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:53,770 INFO L225 Difference]: With dead ends: 27309 [2020-10-13 08:08:53,770 INFO L226 Difference]: Without dead ends: 15114 [2020-10-13 08:08:53,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:08:53,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15114 states. [2020-10-13 08:08:53,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15114 to 14845. [2020-10-13 08:08:53,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14845 states. [2020-10-13 08:08:53,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14845 states to 14845 states and 16732 transitions. [2020-10-13 08:08:53,980 INFO L78 Accepts]: Start accepts. Automaton has 14845 states and 16732 transitions. Word has length 560 [2020-10-13 08:08:53,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:53,981 INFO L479 AbstractCegarLoop]: Abstraction has 14845 states and 16732 transitions. [2020-10-13 08:08:53,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:08:53,981 INFO L276 IsEmpty]: Start isEmpty. Operand 14845 states and 16732 transitions. [2020-10-13 08:08:53,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2020-10-13 08:08:53,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:53,998 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:53,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 08:08:53,998 INFO L427 AbstractCegarLoop]: === Iteration 31 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:53,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:53,998 INFO L82 PathProgramCache]: Analyzing trace with hash 518659147, now seen corresponding path program 1 times [2020-10-13 08:08:53,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:53,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770867974] [2020-10-13 08:08:53,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:54,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:54,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:59,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:59,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 578 [2020-10-13 08:08:59,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:08:59,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 08:08:59,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:59,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:59,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 394 [2020-10-13 08:08:59,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 08:08:59,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:59,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:59,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:59,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:59,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:59,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:59,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:59,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:59,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:59,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:59,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:59,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:59,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:59,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:59,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:59,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:08:59,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:59,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:08:59,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:59,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:59,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:59,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:59,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:59,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:08:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:59,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:59,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:59,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:08:59,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:59,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:08:59,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:59,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:59,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:59,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:59,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-13 08:08:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:59,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:59,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:59,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-13 08:08:59,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:59,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 08:08:59,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:59,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:59,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:59,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 08:08:59,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:59,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-10-13 08:08:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:59,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:59,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:59,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:08:59,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:59,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 08:08:59,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:59,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:59,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:59,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 08:08:59,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 551 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-13 08:08:59,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770867974] [2020-10-13 08:08:59,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:59,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:08:59,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171821234] [2020-10-13 08:08:59,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:08:59,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:59,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:08:59,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:08:59,906 INFO L87 Difference]: Start difference. First operand 14845 states and 16732 transitions. Second operand 8 states. [2020-10-13 08:09:05,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:09:05,275 INFO L93 Difference]: Finished difference Result 29152 states and 32883 transitions. [2020-10-13 08:09:05,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 08:09:05,276 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 562 [2020-10-13 08:09:05,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:09:05,299 INFO L225 Difference]: With dead ends: 29152 [2020-10-13 08:09:05,299 INFO L226 Difference]: Without dead ends: 14689 [2020-10-13 08:09:05,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-13 08:09:05,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14689 states. [2020-10-13 08:09:05,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14689 to 14092. [2020-10-13 08:09:05,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14092 states. [2020-10-13 08:09:05,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14092 states to 14092 states and 15618 transitions. [2020-10-13 08:09:05,481 INFO L78 Accepts]: Start accepts. Automaton has 14092 states and 15618 transitions. Word has length 562 [2020-10-13 08:09:05,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:09:05,482 INFO L479 AbstractCegarLoop]: Abstraction has 14092 states and 15618 transitions. [2020-10-13 08:09:05,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:09:05,482 INFO L276 IsEmpty]: Start isEmpty. Operand 14092 states and 15618 transitions. [2020-10-13 08:09:05,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2020-10-13 08:09:05,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:09:05,494 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:09:05,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 08:09:05,494 INFO L427 AbstractCegarLoop]: === Iteration 32 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:09:05,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:09:05,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1566048155, now seen corresponding path program 1 times [2020-10-13 08:09:05,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:09:05,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795504716] [2020-10-13 08:09:05,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:09:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:05,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:05,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:05,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:05,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:10,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:10,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 620 [2020-10-13 08:09:10,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:09:10,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 08:09:10,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:10,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:09:10,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-13 08:09:10,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:09:10,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:10,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:09:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:10,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:10,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:10,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:09:10,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:10,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:09:10,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:10,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:10,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:10,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:10,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:10,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:09:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:10,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:10,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:10,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:09:10,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:10,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:09:10,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:10,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:10,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:10,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:10,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:10,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:09:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:10,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:10,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:10,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:09:10,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:10,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:09:10,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:10,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:09:10,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:10,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-13 08:09:10,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:10,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-13 08:09:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:10,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:11,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:11,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:11,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:09:11,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:09:11,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-13 08:09:11,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:09:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:09:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 08:09:11,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:11,781 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-13 08:09:11,995 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-13 08:09:12,209 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-10-13 08:09:12,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2020-10-13 08:09:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:12,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:12,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:12,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:09:12,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:12,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 08:09:12,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:12,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:12,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 08:09:12,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:12,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 467 proven. 109 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2020-10-13 08:09:13,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795504716] [2020-10-13 08:09:13,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:09:13,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 08:09:13,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671832661] [2020-10-13 08:09:13,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 08:09:13,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:09:13,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 08:09:13,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:09:13,121 INFO L87 Difference]: Start difference. First operand 14092 states and 15618 transitions. Second operand 10 states. [2020-10-13 08:09:13,402 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-10-13 08:09:13,650 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-10-13 08:09:13,863 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-10-13 08:09:14,019 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 56 [2020-10-13 08:09:14,533 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-13 08:09:15,956 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-10-13 08:09:16,711 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 50 [2020-10-13 08:09:17,075 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 50 [2020-10-13 08:09:17,336 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 53 [2020-10-13 08:09:18,000 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-13 08:09:18,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:09:18,621 INFO L93 Difference]: Finished difference Result 25373 states and 28135 transitions. [2020-10-13 08:09:18,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 08:09:18,623 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 604 [2020-10-13 08:09:18,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:09:18,645 INFO L225 Difference]: With dead ends: 25373 [2020-10-13 08:09:18,645 INFO L226 Difference]: Without dead ends: 14065 [2020-10-13 08:09:18,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-10-13 08:09:18,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14065 states. [2020-10-13 08:09:18,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14065 to 13708. [2020-10-13 08:09:18,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13708 states. [2020-10-13 08:09:18,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13708 states to 13708 states and 15156 transitions. [2020-10-13 08:09:18,821 INFO L78 Accepts]: Start accepts. Automaton has 13708 states and 15156 transitions. Word has length 604 [2020-10-13 08:09:18,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:09:18,821 INFO L479 AbstractCegarLoop]: Abstraction has 13708 states and 15156 transitions. [2020-10-13 08:09:18,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 08:09:18,821 INFO L276 IsEmpty]: Start isEmpty. Operand 13708 states and 15156 transitions. [2020-10-13 08:09:18,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2020-10-13 08:09:18,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:09:18,833 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:09:18,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 08:09:18,833 INFO L427 AbstractCegarLoop]: === Iteration 33 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:09:18,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:09:18,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1407430369, now seen corresponding path program 1 times [2020-10-13 08:09:18,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:09:18,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738531533] [2020-10-13 08:09:18,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:09:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:18,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:19,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:19,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking...