/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:04:37,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:04:37,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:04:37,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:04:37,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:04:37,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:04:37,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:04:37,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:04:37,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:04:37,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:04:37,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:04:37,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:04:37,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:04:37,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:04:37,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:04:37,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:04:37,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:04:37,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:04:37,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:04:37,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:04:37,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:04:37,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:04:37,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:04:37,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:04:37,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:04:37,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:04:37,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:04:37,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:04:37,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:04:37,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:04:37,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:04:37,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:04:37,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:04:37,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:04:37,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:04:37,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:04:37,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:04:37,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:04:37,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:04:37,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:04:37,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:04:37,476 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:04:37,527 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:04:37,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:04:37,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:04:37,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:04:37,534 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:04:37,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:04:37,534 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:04:37,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:04:37,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:04:37,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:04:37,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:04:37,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:04:37,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:04:37,536 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:04:37,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:04:37,536 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:04:37,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:04:37,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:04:37,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:04:37,537 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:04:37,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:04:37,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:04:37,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:04:37,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:04:37,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:04:37,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:04:37,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:04:37,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:04:37,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:04:37,542 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:04:37,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:04:37,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:04:37,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:04:37,917 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:04:37,918 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:04:37,919 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label29.c [2020-10-13 09:04:37,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41085a6fb/c655f78131924193a3425a50443f4ae5/FLAGef3bfbff5 [2020-10-13 09:04:38,701 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:04:38,702 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label29.c [2020-10-13 09:04:38,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41085a6fb/c655f78131924193a3425a50443f4ae5/FLAGef3bfbff5 [2020-10-13 09:04:38,898 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41085a6fb/c655f78131924193a3425a50443f4ae5 [2020-10-13 09:04:38,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:04:38,908 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:04:38,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:04:38,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:04:38,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:04:38,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:04:38" (1/1) ... [2020-10-13 09:04:38,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@126329ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:38, skipping insertion in model container [2020-10-13 09:04:38,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:04:38" (1/1) ... [2020-10-13 09:04:38,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:04:39,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:04:39,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:04:39,863 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:04:40,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:04:40,297 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:04:40,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:40 WrapperNode [2020-10-13 09:04:40,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:04:40,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:04:40,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:04:40,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:04:40,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:40" (1/1) ... [2020-10-13 09:04:40,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:40" (1/1) ... [2020-10-13 09:04:40,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:40" (1/1) ... [2020-10-13 09:04:40,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:40" (1/1) ... [2020-10-13 09:04:40,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:40" (1/1) ... [2020-10-13 09:04:40,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:40" (1/1) ... [2020-10-13 09:04:40,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:40" (1/1) ... [2020-10-13 09:04:40,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:04:40,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:04:40,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:04:40,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:04:40,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:04:40,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:04:40,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:04:40,596 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:04:40,596 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:04:40,596 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:04:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:04:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:04:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:04:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:04:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:04:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:04:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:04:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:04:46,964 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:04:46,968 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:04:46,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:04:46 BoogieIcfgContainer [2020-10-13 09:04:46,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:04:46,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:04:46,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:04:46,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:04:46,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:04:38" (1/3) ... [2020-10-13 09:04:46,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ed31b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:04:46, skipping insertion in model container [2020-10-13 09:04:46,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:40" (2/3) ... [2020-10-13 09:04:46,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ed31b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:04:46, skipping insertion in model container [2020-10-13 09:04:46,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:04:46" (3/3) ... [2020-10-13 09:04:47,003 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label29.c [2020-10-13 09:04:47,015 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:04:47,030 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:04:47,046 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:04:47,075 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:04:47,075 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:04:47,076 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:04:47,076 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:04:47,076 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:04:47,076 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:04:47,076 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:04:47,076 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:04:47,107 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 09:04:47,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 09:04:47,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:47,117 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] [2020-10-13 09:04:47,117 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:47,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:47,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1084941995, now seen corresponding path program 1 times [2020-10-13 09:04:47,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:47,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22142386] [2020-10-13 09:04:47,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:47,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:47,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:47,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 09:04:47,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:47,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-13 09:04:47,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:04:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:04:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 09:04:47,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:04:47,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:47,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:47,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:47,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:47,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:47,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:04:47,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:47,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:47,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:47,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:04:47,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:04:47,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:04:47,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22142386] [2020-10-13 09:04:47,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:04:47,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:04:47,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454515176] [2020-10-13 09:04:47,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:04:47,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:47,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:04:47,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:04:47,910 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 09:04:53,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:53,784 INFO L93 Difference]: Finished difference Result 1240 states and 2220 transitions. [2020-10-13 09:04:53,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:04:53,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-13 09:04:53,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:53,809 INFO L225 Difference]: With dead ends: 1240 [2020-10-13 09:04:53,809 INFO L226 Difference]: Without dead ends: 724 [2020-10-13 09:04:53,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:04:53,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-10-13 09:04:53,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 712. [2020-10-13 09:04:53,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2020-10-13 09:04:53,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1129 transitions. [2020-10-13 09:04:53,924 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1129 transitions. Word has length 27 [2020-10-13 09:04:53,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:53,925 INFO L479 AbstractCegarLoop]: Abstraction has 712 states and 1129 transitions. [2020-10-13 09:04:53,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:04:53,925 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1129 transitions. [2020-10-13 09:04:53,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 09:04:53,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:53,931 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:04:53,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:04:53,932 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:53,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:53,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1714924775, now seen corresponding path program 1 times [2020-10-13 09:04:53,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:53,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613001961] [2020-10-13 09:04:53,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:54,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:54,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:54,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:55,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:55,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:55,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 09:04:55,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:04:55,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1772 [2020-10-13 09:04:55,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:55,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:55,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 09:04:55,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:04:55,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:04:55,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:55,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:55,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:55,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:55,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:55,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:04:55,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:55,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:55,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:55,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:55,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:55,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:55,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:56,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:56,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:04:56,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:56,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 09:04:56,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:56,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:56,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:56,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:04:56,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:56,139 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:04:56,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613001961] [2020-10-13 09:04:56,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:56,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:04:56,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223883373] [2020-10-13 09:04:56,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:04:56,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:56,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:04:56,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:04:56,144 INFO L87 Difference]: Start difference. First operand 712 states and 1129 transitions. Second operand 5 states. [2020-10-13 09:05:03,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:03,128 INFO L93 Difference]: Finished difference Result 1442 states and 2284 transitions. [2020-10-13 09:05:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:03,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-13 09:05:03,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:03,145 INFO L225 Difference]: With dead ends: 1442 [2020-10-13 09:05:03,145 INFO L226 Difference]: Without dead ends: 716 [2020-10-13 09:05:03,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:05:03,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-10-13 09:05:03,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 712. [2020-10-13 09:05:03,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2020-10-13 09:05:03,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1127 transitions. [2020-10-13 09:05:03,213 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1127 transitions. Word has length 99 [2020-10-13 09:05:03,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:03,213 INFO L479 AbstractCegarLoop]: Abstraction has 712 states and 1127 transitions. [2020-10-13 09:05:03,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:03,214 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1127 transitions. [2020-10-13 09:05:03,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 09:05:03,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:03,225 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:05:03,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:05:03,226 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:03,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:03,226 INFO L82 PathProgramCache]: Analyzing trace with hash 2070667258, now seen corresponding path program 1 times [2020-10-13 09:05:03,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:03,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934353198] [2020-10-13 09:05:03,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:03,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:03,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:03,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:03,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:04,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:04,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 09:05:04,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:05:04,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1193 [2020-10-13 09:05:04,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:04,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:04,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:05:04,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:05:04,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:04,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:04,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:04,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:04,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:04,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:04,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:05:04,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:04,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:04,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:05:04,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:04,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:04,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:04,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:05:04,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:04,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:05:04,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:04,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:04,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 09:05:04,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:05:04,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:05:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:05:04,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934353198] [2020-10-13 09:05:04,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:05:04,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:05:04,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403592947] [2020-10-13 09:05:04,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:04,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:04,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:04,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:04,680 INFO L87 Difference]: Start difference. First operand 712 states and 1127 transitions. Second operand 5 states. [2020-10-13 09:05:11,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:11,395 INFO L93 Difference]: Finished difference Result 2049 states and 3300 transitions. [2020-10-13 09:05:11,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:11,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-13 09:05:11,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:11,404 INFO L225 Difference]: With dead ends: 2049 [2020-10-13 09:05:11,405 INFO L226 Difference]: Without dead ends: 1343 [2020-10-13 09:05:11,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:05:11,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2020-10-13 09:05:11,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1338. [2020-10-13 09:05:11,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1338 states. [2020-10-13 09:05:11,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1962 transitions. [2020-10-13 09:05:11,446 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1962 transitions. Word has length 100 [2020-10-13 09:05:11,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:11,447 INFO L479 AbstractCegarLoop]: Abstraction has 1338 states and 1962 transitions. [2020-10-13 09:05:11,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:11,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1962 transitions. [2020-10-13 09:05:11,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 09:05:11,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:11,450 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:05:11,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:05:11,450 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:11,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:11,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1562933463, now seen corresponding path program 1 times [2020-10-13 09:05:11,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:11,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024893361] [2020-10-13 09:05:11,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:11,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:11,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:12,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:12,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 09:05:12,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:05:12,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1058 [2020-10-13 09:05:12,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:12,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:12,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 09:05:12,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:05:12,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:12,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:12,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:12,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:12,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:12,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:12,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:05:12,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:12,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:12,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:12,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:12,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:05:12,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:12,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:12,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:12,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:05:12,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:12,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:05:12,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:12,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:12,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:12,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:05:12,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:12,863 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:05:12,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024893361] [2020-10-13 09:05:12,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:12,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:05:12,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009750505] [2020-10-13 09:05:12,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:12,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:12,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:12,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:12,869 INFO L87 Difference]: Start difference. First operand 1338 states and 1962 transitions. Second operand 5 states. [2020-10-13 09:05:19,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:19,838 INFO L93 Difference]: Finished difference Result 3913 states and 5812 transitions. [2020-10-13 09:05:19,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:19,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-13 09:05:19,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:19,855 INFO L225 Difference]: With dead ends: 3913 [2020-10-13 09:05:19,855 INFO L226 Difference]: Without dead ends: 2581 [2020-10-13 09:05:19,859 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 09:05:19,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2020-10-13 09:05:19,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 2577. [2020-10-13 09:05:19,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2577 states. [2020-10-13 09:05:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 3361 transitions. [2020-10-13 09:05:19,929 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 3361 transitions. Word has length 107 [2020-10-13 09:05:19,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:19,930 INFO L479 AbstractCegarLoop]: Abstraction has 2577 states and 3361 transitions. [2020-10-13 09:05:19,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:19,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 3361 transitions. [2020-10-13 09:05:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 09:05:19,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:19,933 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:05:19,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:05:19,933 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:19,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:19,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1273191349, now seen corresponding path program 1 times [2020-10-13 09:05:19,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:19,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529751429] [2020-10-13 09:05:19,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:19,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:20,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:20,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:20,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 09:05:20,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:05:20,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 782 [2020-10-13 09:05:20,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:20,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:20,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 09:05:20,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:05:20,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:20,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:20,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:20,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:20,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:20,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:20,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:05:20,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:20,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:20,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:20,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:20,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:20,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:20,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:20,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:20,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:05:20,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:20,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 09:05:20,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:20,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:20,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:20,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 09:05:20,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:05:20,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529751429] [2020-10-13 09:05:20,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:20,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:05:20,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155683520] [2020-10-13 09:05:20,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:20,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:20,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:20,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:20,973 INFO L87 Difference]: Start difference. First operand 2577 states and 3361 transitions. Second operand 5 states. [2020-10-13 09:05:30,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:30,048 INFO L93 Difference]: Finished difference Result 6084 states and 8254 transitions. [2020-10-13 09:05:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:30,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-13 09:05:30,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:30,074 INFO L225 Difference]: With dead ends: 6084 [2020-10-13 09:05:30,075 INFO L226 Difference]: Without dead ends: 3513 [2020-10-13 09:05:30,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:05:30,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3513 states. [2020-10-13 09:05:30,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3513 to 3508. [2020-10-13 09:05:30,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3508 states. [2020-10-13 09:05:30,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3508 states to 3508 states and 4457 transitions. [2020-10-13 09:05:30,248 INFO L78 Accepts]: Start accepts. Automaton has 3508 states and 4457 transitions. Word has length 110 [2020-10-13 09:05:30,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:30,248 INFO L479 AbstractCegarLoop]: Abstraction has 3508 states and 4457 transitions. [2020-10-13 09:05:30,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:30,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3508 states and 4457 transitions. [2020-10-13 09:05:30,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 09:05:30,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:30,251 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:05:30,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:05:30,251 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:30,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:30,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1638557581, now seen corresponding path program 1 times [2020-10-13 09:05:30,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:30,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35119517] [2020-10-13 09:05:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:30,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:30,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:31,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:31,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:05:31,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:05:31,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-13 09:05:31,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:31,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:31,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 09:05:31,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:05:31,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:05:31,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:31,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:31,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:31,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:31,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:31,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:05:31,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:31,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:31,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:31,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:31,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:31,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:31,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:31,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:31,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:05:31,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:31,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:05:31,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:31,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:31,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:31,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:05:31,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:05:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:05:31,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35119517] [2020-10-13 09:05:31,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:31,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:05:31,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869728548] [2020-10-13 09:05:31,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:31,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:31,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:31,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:31,280 INFO L87 Difference]: Start difference. First operand 3508 states and 4457 transitions. Second operand 5 states. [2020-10-13 09:05:42,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:42,684 INFO L93 Difference]: Finished difference Result 10177 states and 13143 transitions. [2020-10-13 09:05:42,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:42,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 09:05:42,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:42,717 INFO L225 Difference]: With dead ends: 10177 [2020-10-13 09:05:42,717 INFO L226 Difference]: Without dead ends: 6675 [2020-10-13 09:05:42,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:05:42,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6675 states. [2020-10-13 09:05:42,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6675 to 6667. [2020-10-13 09:05:42,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6667 states. [2020-10-13 09:05:42,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6667 states to 6667 states and 8345 transitions. [2020-10-13 09:05:42,903 INFO L78 Accepts]: Start accepts. Automaton has 6667 states and 8345 transitions. Word has length 113 [2020-10-13 09:05:42,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:42,904 INFO L479 AbstractCegarLoop]: Abstraction has 6667 states and 8345 transitions. [2020-10-13 09:05:42,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:42,904 INFO L276 IsEmpty]: Start isEmpty. Operand 6667 states and 8345 transitions. [2020-10-13 09:05:42,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 09:05:42,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:42,907 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:05:42,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:05:42,907 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:42,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:42,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1735628893, now seen corresponding path program 1 times [2020-10-13 09:05:42,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:42,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520939536] [2020-10-13 09:05:42,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:42,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:43,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:43,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:43,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:05:43,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:05:43,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 961 [2020-10-13 09:05:43,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:43,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:43,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-13 09:05:43,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:05:43,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:43,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:43,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:43,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:43,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:43,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:43,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:05:43,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:43,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:43,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:43,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:43,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:43,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:44,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:44,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:44,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:05:44,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:44,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 09:05:44,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:44,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:44,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:44,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 09:05:44,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:05:44,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520939536] [2020-10-13 09:05:44,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:44,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:05:44,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667157713] [2020-10-13 09:05:44,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:44,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:44,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:44,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:44,156 INFO L87 Difference]: Start difference. First operand 6667 states and 8345 transitions. Second operand 5 states. [2020-10-13 09:05:56,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:56,721 INFO L93 Difference]: Finished difference Result 16432 states and 20909 transitions. [2020-10-13 09:05:56,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:56,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-13 09:05:56,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:56,767 INFO L225 Difference]: With dead ends: 16432 [2020-10-13 09:05:56,768 INFO L226 Difference]: Without dead ends: 9771 [2020-10-13 09:05:56,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:05:56,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9771 states. [2020-10-13 09:05:57,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9771 to 9765. [2020-10-13 09:05:57,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9765 states. [2020-10-13 09:05:57,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9765 states to 9765 states and 12202 transitions. [2020-10-13 09:05:57,064 INFO L78 Accepts]: Start accepts. Automaton has 9765 states and 12202 transitions. Word has length 126 [2020-10-13 09:05:57,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:57,065 INFO L479 AbstractCegarLoop]: Abstraction has 9765 states and 12202 transitions. [2020-10-13 09:05:57,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:57,065 INFO L276 IsEmpty]: Start isEmpty. Operand 9765 states and 12202 transitions. [2020-10-13 09:05:57,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 09:05:57,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:57,071 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:05:57,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:05:57,072 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:57,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:57,072 INFO L82 PathProgramCache]: Analyzing trace with hash -72928386, now seen corresponding path program 1 times [2020-10-13 09:05:57,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:57,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590143658] [2020-10-13 09:05:57,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:57,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:57,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:57,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:57,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:59,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:59,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:02,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:02,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 09:06:02,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:06:02,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 09:06:02,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:02,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:02,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-13 09:06:02,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:06:02,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:02,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:02,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:02,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:02,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:02,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:02,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:06:02,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:02,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:02,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:02,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:02,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:02,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:02,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:02,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:02,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:06:02,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:02,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:06:02,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:02,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:02,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:02,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:02,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:02,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:06:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:02,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:02,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:02,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:06:02,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:02,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:06:02,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:06:02,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:02,464 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 09:06:02,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590143658] [2020-10-13 09:06:02,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:02,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:02,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810221541] [2020-10-13 09:06:02,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:02,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:02,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:02,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:02,466 INFO L87 Difference]: Start difference. First operand 9765 states and 12202 transitions. Second operand 5 states. [2020-10-13 09:06:08,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:08,300 INFO L93 Difference]: Finished difference Result 19544 states and 24474 transitions. [2020-10-13 09:06:08,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:08,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-13 09:06:08,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:08,349 INFO L225 Difference]: With dead ends: 19544 [2020-10-13 09:06:08,350 INFO L226 Difference]: Without dead ends: 9769 [2020-10-13 09:06:08,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:06:08,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9769 states. [2020-10-13 09:06:08,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9769 to 9765. [2020-10-13 09:06:08,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9765 states. [2020-10-13 09:06:08,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9765 states to 9765 states and 12190 transitions. [2020-10-13 09:06:08,647 INFO L78 Accepts]: Start accepts. Automaton has 9765 states and 12190 transitions. Word has length 172 [2020-10-13 09:06:08,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:08,647 INFO L479 AbstractCegarLoop]: Abstraction has 9765 states and 12190 transitions. [2020-10-13 09:06:08,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:08,647 INFO L276 IsEmpty]: Start isEmpty. Operand 9765 states and 12190 transitions. [2020-10-13 09:06:08,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-13 09:06:08,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:08,653 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:06:08,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:06:08,653 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:08,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:08,654 INFO L82 PathProgramCache]: Analyzing trace with hash -709374230, now seen corresponding path program 1 times [2020-10-13 09:06:08,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:08,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864105287] [2020-10-13 09:06:08,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:08,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:09,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:09,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:10,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:10,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:10,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:06:10,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:06:10,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1504 [2020-10-13 09:06:10,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:10,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-13 09:06:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 09:06:10,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:10,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:10,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:10,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:10,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:10,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:10,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:06:10,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:10,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:10,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:10,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:10,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:10,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:10,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:10,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:10,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 09:06:10,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:10,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-13 09:06:10,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:10,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:10,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:10,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-13 09:06:10,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:06:10,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864105287] [2020-10-13 09:06:10,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:10,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:10,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989209073] [2020-10-13 09:06:10,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:10,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:10,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:10,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:10,760 INFO L87 Difference]: Start difference. First operand 9765 states and 12190 transitions. Second operand 5 states. [2020-10-13 09:06:19,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:19,696 INFO L93 Difference]: Finished difference Result 19536 states and 24443 transitions. [2020-10-13 09:06:19,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:19,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-13 09:06:19,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:19,729 INFO L225 Difference]: With dead ends: 19536 [2020-10-13 09:06:19,729 INFO L226 Difference]: Without dead ends: 9769 [2020-10-13 09:06:19,749 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 09:06:19,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9769 states. [2020-10-13 09:06:19,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9769 to 9765. [2020-10-13 09:06:19,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9765 states. [2020-10-13 09:06:19,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9765 states to 9765 states and 12178 transitions. [2020-10-13 09:06:19,938 INFO L78 Accepts]: Start accepts. Automaton has 9765 states and 12178 transitions. Word has length 179 [2020-10-13 09:06:19,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:19,939 INFO L479 AbstractCegarLoop]: Abstraction has 9765 states and 12178 transitions. [2020-10-13 09:06:19,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:19,939 INFO L276 IsEmpty]: Start isEmpty. Operand 9765 states and 12178 transitions. [2020-10-13 09:06:19,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 09:06:19,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:19,944 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:06:19,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:06:19,945 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:19,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:19,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1191042307, now seen corresponding path program 1 times [2020-10-13 09:06:19,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:19,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143754067] [2020-10-13 09:06:19,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:20,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:20,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:21,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:21,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 09:06:21,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:06:21,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1129 [2020-10-13 09:06:21,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:21,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:21,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 09:06:21,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:06:21,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:21,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:21,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:21,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:21,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:21,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:21,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:06:21,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:21,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:21,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:21,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:21,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:21,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:21,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:21,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:21,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 09:06:21,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:21,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-13 09:06:21,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:21,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:21,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:21,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-13 09:06:21,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:21,475 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:06:21,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143754067] [2020-10-13 09:06:21,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:21,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:21,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367782869] [2020-10-13 09:06:21,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:21,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:21,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:21,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:21,478 INFO L87 Difference]: Start difference. First operand 9765 states and 12178 transitions. Second operand 5 states. [2020-10-13 09:06:29,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:29,590 INFO L93 Difference]: Finished difference Result 22634 states and 29338 transitions. [2020-10-13 09:06:29,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:29,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-13 09:06:29,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:29,636 INFO L225 Difference]: With dead ends: 22634 [2020-10-13 09:06:29,636 INFO L226 Difference]: Without dead ends: 12875 [2020-10-13 09:06:29,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:06:29,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12875 states. [2020-10-13 09:06:29,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12875 to 12863. [2020-10-13 09:06:29,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12863 states. [2020-10-13 09:06:29,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12863 states to 12863 states and 15894 transitions. [2020-10-13 09:06:29,897 INFO L78 Accepts]: Start accepts. Automaton has 12863 states and 15894 transitions. Word has length 180 [2020-10-13 09:06:29,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:29,898 INFO L479 AbstractCegarLoop]: Abstraction has 12863 states and 15894 transitions. [2020-10-13 09:06:29,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:29,898 INFO L276 IsEmpty]: Start isEmpty. Operand 12863 states and 15894 transitions. [2020-10-13 09:06:29,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-13 09:06:29,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:29,905 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:06:29,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:06:29,905 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:29,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:29,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1804896045, now seen corresponding path program 1 times [2020-10-13 09:06:29,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:29,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509635887] [2020-10-13 09:06:29,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:29,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:30,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:30,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:33,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:33,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-13 09:06:33,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:06:33,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3069 [2020-10-13 09:06:33,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:33,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:33,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 179 [2020-10-13 09:06:33,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:06:33,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:33,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:33,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:33,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:33,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:33,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:33,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:06:33,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:33,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:33,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:33,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:33,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:33,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:33,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:33,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:33,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:06:33,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:33,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:06:33,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:33,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:33,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:33,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:33,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:06:33,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 09:06:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:33,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:33,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:33,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 09:06:33,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:33,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 09:06:33,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:33,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:33,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:33,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 09:06:33,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-13 09:06:33,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509635887] [2020-10-13 09:06:33,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:33,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:33,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894693225] [2020-10-13 09:06:33,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:33,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:33,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:33,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:33,400 INFO L87 Difference]: Start difference. First operand 12863 states and 15894 transitions. Second operand 5 states. [2020-10-13 09:06:43,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:43,411 INFO L93 Difference]: Finished difference Result 28824 states and 36810 transitions. [2020-10-13 09:06:43,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:43,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-13 09:06:43,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:43,476 INFO L225 Difference]: With dead ends: 28824 [2020-10-13 09:06:43,476 INFO L226 Difference]: Without dead ends: 15967 [2020-10-13 09:06:43,497 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 09:06:43,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15967 states. [2020-10-13 09:06:43,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15967 to 15959. [2020-10-13 09:06:43,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15959 states. [2020-10-13 09:06:43,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15959 states to 15959 states and 19599 transitions. [2020-10-13 09:06:43,758 INFO L78 Accepts]: Start accepts. Automaton has 15959 states and 19599 transitions. Word has length 194 [2020-10-13 09:06:43,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:43,758 INFO L479 AbstractCegarLoop]: Abstraction has 15959 states and 19599 transitions. [2020-10-13 09:06:43,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:43,758 INFO L276 IsEmpty]: Start isEmpty. Operand 15959 states and 19599 transitions. [2020-10-13 09:06:43,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-13 09:06:43,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:43,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:06:43,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:06:43,765 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:43,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:43,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1333345931, now seen corresponding path program 1 times [2020-10-13 09:06:43,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:43,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203336031] [2020-10-13 09:06:43,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:43,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:44,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:44,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:45,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:45,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-13 09:06:45,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:06:45,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1449 [2020-10-13 09:06:45,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:45,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:45,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-13 09:06:45,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 09:06:45,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:45,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:45,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:45,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:45,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:45,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:45,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:06:45,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:45,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:45,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:45,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:45,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:45,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 09:06:45,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:45,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-13 09:06:45,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:45,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:45,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:45,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 09:06:45,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:06:45,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203336031] [2020-10-13 09:06:45,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:45,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:45,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979853718] [2020-10-13 09:06:45,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:45,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:45,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:45,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:45,722 INFO L87 Difference]: Start difference. First operand 15959 states and 19599 transitions. Second operand 5 states. [2020-10-13 09:06:52,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:52,743 INFO L93 Difference]: Finished difference Result 31925 states and 39272 transitions. [2020-10-13 09:06:52,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:52,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-13 09:06:52,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:52,813 INFO L225 Difference]: With dead ends: 31925 [2020-10-13 09:06:52,814 INFO L226 Difference]: Without dead ends: 15963 [2020-10-13 09:06:52,836 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 09:06:52,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15963 states. [2020-10-13 09:06:53,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15963 to 15959. [2020-10-13 09:06:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15959 states. [2020-10-13 09:06:53,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15959 states to 15959 states and 19575 transitions. [2020-10-13 09:06:53,277 INFO L78 Accepts]: Start accepts. Automaton has 15959 states and 19575 transitions. Word has length 212 [2020-10-13 09:06:53,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:53,277 INFO L479 AbstractCegarLoop]: Abstraction has 15959 states and 19575 transitions. [2020-10-13 09:06:53,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:53,278 INFO L276 IsEmpty]: Start isEmpty. Operand 15959 states and 19575 transitions. [2020-10-13 09:06:53,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-13 09:06:53,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:53,286 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:06:53,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:06:53,287 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:53,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:53,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1577810250, now seen corresponding path program 1 times [2020-10-13 09:06:53,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:53,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187343548] [2020-10-13 09:06:53,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:53,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:53,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:53,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:55,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:55,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:06:55,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:06:55,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1701 [2020-10-13 09:06:55,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:55,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:55,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:06:55,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:06:55,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:55,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:55,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:55,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:55,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:55,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:55,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:06:55,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:55,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:55,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:06:55,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:55,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:55,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:55,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:06:55,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:55,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 09:06:55,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:55,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:55,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:55,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:06:55,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:06:55,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:06:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:55,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:55,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:56,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:56,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 09:06:56,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:06:56,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 675 [2020-10-13 09:06:56,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:06:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-13 09:06:56,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:06:56,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187343548] [2020-10-13 09:06:56,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:56,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:06:56,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387323901] [2020-10-13 09:06:56,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:06:56,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:56,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:06:56,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:06:56,459 INFO L87 Difference]: Start difference. First operand 15959 states and 19575 transitions. Second operand 7 states. [2020-10-13 09:07:15,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:07:15,479 INFO L93 Difference]: Finished difference Result 42060 states and 52926 transitions. [2020-10-13 09:07:15,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:07:15,483 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-13 09:07:15,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:07:15,588 INFO L225 Difference]: With dead ends: 42060 [2020-10-13 09:07:15,589 INFO L226 Difference]: Without dead ends: 26057 [2020-10-13 09:07:15,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 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 09:07:15,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26057 states. [2020-10-13 09:07:16,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26057 to 25853. [2020-10-13 09:07:16,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25853 states. [2020-10-13 09:07:16,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25853 states to 25853 states and 31744 transitions. [2020-10-13 09:07:16,187 INFO L78 Accepts]: Start accepts. Automaton has 25853 states and 31744 transitions. Word has length 265 [2020-10-13 09:07:16,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:07:16,187 INFO L479 AbstractCegarLoop]: Abstraction has 25853 states and 31744 transitions. [2020-10-13 09:07:16,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:07:16,187 INFO L276 IsEmpty]: Start isEmpty. Operand 25853 states and 31744 transitions. [2020-10-13 09:07:16,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-13 09:07:16,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:07:16,208 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:07:16,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:07:16,208 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:07:16,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:07:16,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1273702335, now seen corresponding path program 1 times [2020-10-13 09:07:16,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:07:16,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373258645] [2020-10-13 09:07:16,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:07:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:16,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:16,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:19,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:19,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:21,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:21,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-13 09:07:21,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:07:21,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 09:07:21,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:21,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:07:21,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-13 09:07:21,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 09:07:21,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:21,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:07:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:21,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:21,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:21,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:07:21,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:21,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:07:21,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:21,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:21,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:21,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:21,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:07:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:21,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:21,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:21,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:07:21,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:21,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:07:21,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:21,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:21,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:21,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:21,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:21,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 09:07:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:21,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:21,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:21,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:07:21,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:21,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:07:21,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:21,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:21,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:21,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:21,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:21,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-13 09:07:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:21,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:21,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:21,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:07:21,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:21,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-13 09:07:21,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:21,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 09:07:21,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:21,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-13 09:07:21,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2020-10-13 09:07:22,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373258645] [2020-10-13 09:07:22,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:07:22,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:07:22,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382919193] [2020-10-13 09:07:22,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:07:22,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:07:22,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:07:22,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:07:22,144 INFO L87 Difference]: Start difference. First operand 25853 states and 31744 transitions. Second operand 7 states. [2020-10-13 09:07:42,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:07:42,678 INFO L93 Difference]: Finished difference Result 81097 states and 102185 transitions. [2020-10-13 09:07:42,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:07:42,680 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 332 [2020-10-13 09:07:42,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:07:42,809 INFO L225 Difference]: With dead ends: 81097 [2020-10-13 09:07:42,810 INFO L226 Difference]: Without dead ends: 55254 [2020-10-13 09:07:42,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:07:42,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55254 states. [2020-10-13 09:07:44,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55254 to 53960. [2020-10-13 09:07:44,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53960 states. [2020-10-13 09:07:44,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53960 states to 53960 states and 66358 transitions. [2020-10-13 09:07:44,897 INFO L78 Accepts]: Start accepts. Automaton has 53960 states and 66358 transitions. Word has length 332 [2020-10-13 09:07:44,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:07:44,898 INFO L479 AbstractCegarLoop]: Abstraction has 53960 states and 66358 transitions. [2020-10-13 09:07:44,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:07:44,898 INFO L276 IsEmpty]: Start isEmpty. Operand 53960 states and 66358 transitions. [2020-10-13 09:07:44,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-13 09:07:44,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:07:44,919 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:07:44,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:07:44,920 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:07:44,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:07:44,920 INFO L82 PathProgramCache]: Analyzing trace with hash -9511143, now seen corresponding path program 1 times [2020-10-13 09:07:44,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:07:44,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138395517] [2020-10-13 09:07:44,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:07:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:45,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:45,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:45,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:47,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:47,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-13 09:07:47,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:07:47,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2931 [2020-10-13 09:07:47,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:47,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:07:47,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-13 09:07:47,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:07:47,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:48,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:07:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:48,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:48,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:48,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:07:48,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:48,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:07:48,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:48,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:48,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:48,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:48,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:48,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:07:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:48,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:48,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:48,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:07:48,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:48,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:07:48,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:48,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:07:48,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:48,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-13 09:07:48,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:48,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 09:07:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:48,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:48,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:48,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:48,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 09:07:48,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:07:48,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-13 09:07:48,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:07:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:07:48,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-13 09:07:48,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:07:48,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138395517] [2020-10-13 09:07:48,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:07:48,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:07:48,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504391461] [2020-10-13 09:07:48,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:07:48,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:07:48,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:07:48,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:07:48,905 INFO L87 Difference]: Start difference. First operand 53960 states and 66358 transitions. Second operand 6 states. [2020-10-13 09:07:57,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:07:57,358 INFO L93 Difference]: Finished difference Result 108038 states and 133022 transitions. [2020-10-13 09:07:57,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:07:57,361 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 332 [2020-10-13 09:07:57,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:07:57,471 INFO L225 Difference]: With dead ends: 108038 [2020-10-13 09:07:57,472 INFO L226 Difference]: Without dead ends: 53998 [2020-10-13 09:07:57,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 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 09:07:57,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53998 states. [2020-10-13 09:07:58,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53998 to 53346. [2020-10-13 09:07:58,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53346 states. [2020-10-13 09:07:58,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53346 states to 53346 states and 64269 transitions. [2020-10-13 09:07:58,807 INFO L78 Accepts]: Start accepts. Automaton has 53346 states and 64269 transitions. Word has length 332 [2020-10-13 09:07:58,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:07:58,807 INFO L479 AbstractCegarLoop]: Abstraction has 53346 states and 64269 transitions. [2020-10-13 09:07:58,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:07:58,808 INFO L276 IsEmpty]: Start isEmpty. Operand 53346 states and 64269 transitions. [2020-10-13 09:07:58,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-13 09:07:58,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:07:58,837 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:07:58,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:07:58,838 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:07:58,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:07:58,838 INFO L82 PathProgramCache]: Analyzing trace with hash -590082549, now seen corresponding path program 1 times [2020-10-13 09:07:58,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:07:58,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008571813] [2020-10-13 09:07:58,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:07:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:58,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:59,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:59,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:59,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:03,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:03,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-13 09:08:03,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:08:03,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 09:08:03,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:08:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-13 09:08:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 09:08:03,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:04,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:08:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:04,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:04,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:04,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:08:04,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:04,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:08:04,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:04,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:04,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:04,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:04,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:04,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:08:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:04,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:04,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:04,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:08:04,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:04,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:08:04,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:04,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:04,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:04,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:04,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:04,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 09:08:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:04,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:04,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:04,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:08:04,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:04,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:08:04,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:04,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:08:04,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:04,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 09:08:04,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:04,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-13 09:08:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:04,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:04,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:04,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:04,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 09:08:04,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:08:04,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 614 [2020-10-13 09:08:04,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:04,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:08:04,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:08:04,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-13 09:08:04,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:05,298 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-13 09:08:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-13 09:08:05,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008571813] [2020-10-13 09:08:05,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:08:05,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:08:05,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491636092] [2020-10-13 09:08:05,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:08:05,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:08:05,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:08:05,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:08:05,815 INFO L87 Difference]: Start difference. First operand 53346 states and 64269 transitions. Second operand 10 states. [2020-10-13 09:08:06,056 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-13 09:08:06,474 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-13 09:08:06,717 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-13 09:08:06,903 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2020-10-13 09:08:08,516 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2020-10-13 09:08:08,879 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-10-13 09:08:09,421 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-10-13 09:08:09,753 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-10-13 09:08:13,551 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2020-10-13 09:08:17,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:08:17,906 INFO L93 Difference]: Finished difference Result 106204 states and 128562 transitions. [2020-10-13 09:08:17,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 09:08:17,909 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 360 [2020-10-13 09:08:17,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:08:18,028 INFO L225 Difference]: With dead ends: 106204 [2020-10-13 09:08:18,029 INFO L226 Difference]: Without dead ends: 52511 [2020-10-13 09:08:18,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-13 09:08:18,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52511 states. [2020-10-13 09:08:18,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52511 to 52464. [2020-10-13 09:08:18,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52464 states. [2020-10-13 09:08:18,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52464 states to 52464 states and 63021 transitions. [2020-10-13 09:08:18,833 INFO L78 Accepts]: Start accepts. Automaton has 52464 states and 63021 transitions. Word has length 360 [2020-10-13 09:08:18,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:08:18,834 INFO L479 AbstractCegarLoop]: Abstraction has 52464 states and 63021 transitions. [2020-10-13 09:08:18,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:08:18,834 INFO L276 IsEmpty]: Start isEmpty. Operand 52464 states and 63021 transitions. [2020-10-13 09:08:18,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-13 09:08:18,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:08:18,853 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-13 09:08:18,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:08:18,853 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:08:18,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:08:18,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1747603737, now seen corresponding path program 1 times [2020-10-13 09:08:18,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:08:18,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194206450] [2020-10-13 09:08:18,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:08:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:18,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:18,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:19,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:19,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking...