/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:18:03,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:18:03,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:18:03,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:18:03,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:18:03,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:18:03,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:18:03,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:18:03,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:18:03,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:18:03,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:18:03,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:18:03,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:18:03,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:18:03,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:18:03,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:18:03,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:18:03,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:18:03,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:18:03,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:18:03,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:18:03,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:18:03,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:18:03,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:18:03,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:18:03,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:18:03,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:18:03,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:18:03,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:18:03,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:18:03,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:18:03,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:18:03,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:18:03,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:18:03,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:18:03,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:18:03,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:18:03,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:18:03,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:18:03,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:18:03,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:18:03,475 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 [2020-10-12 11:18:03,512 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:18:03,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:18:03,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:18:03,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:18:03,514 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:18:03,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:18:03,515 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:18:03,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:18:03,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:18:03,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:18:03,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:18:03,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:18:03,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:18:03,517 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:18:03,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:18:03,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:18:03,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:18:03,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:18:03,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:18:03,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:18:03,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:18:03,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:18:03,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:18:03,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:18:03,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:18:03,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:18:03,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:18:03,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:18:03,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:18:03,520 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:18:03,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:18:03,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:18:03,872 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:18:03,874 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:18:03,875 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:18:03,875 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label13.c [2020-10-12 11:18:03,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f573e1df/0269d5be3d194cd09905abb8ee7cfc04/FLAG070aa7a4e [2020-10-12 11:18:04,605 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:18:04,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label13.c [2020-10-12 11:18:04,622 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f573e1df/0269d5be3d194cd09905abb8ee7cfc04/FLAG070aa7a4e [2020-10-12 11:18:04,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f573e1df/0269d5be3d194cd09905abb8ee7cfc04 [2020-10-12 11:18:04,816 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:18:04,817 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:18:04,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:18:04,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:18:04,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:18:04,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:18:04" (1/1) ... [2020-10-12 11:18:04,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c096cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:18:04, skipping insertion in model container [2020-10-12 11:18:04,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:18:04" (1/1) ... [2020-10-12 11:18:04,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:18:04,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:18:05,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:18:05,797 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:18:06,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:18:06,105 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:18:06,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:18:06 WrapperNode [2020-10-12 11:18:06,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:18:06,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:18:06,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:18:06,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:18:06,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:18:06" (1/1) ... [2020-10-12 11:18:06,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:18:06" (1/1) ... [2020-10-12 11:18:06,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:18:06" (1/1) ... [2020-10-12 11:18:06,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:18:06" (1/1) ... [2020-10-12 11:18:06,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:18:06" (1/1) ... [2020-10-12 11:18:06,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:18:06" (1/1) ... [2020-10-12 11:18:06,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:18:06" (1/1) ... [2020-10-12 11:18:06,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:18:06,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:18:06,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:18:06,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:18:06,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:18:06" (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 [2020-10-12 11:18:06,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:18:06,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:18:06,393 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:18:06,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:18:06,393 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:18:06,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:18:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:18:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:18:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:18:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:18:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:18:08,326 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:18:08,327 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:18:08,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:18:08 BoogieIcfgContainer [2020-10-12 11:18:08,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:18:08,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:18:08,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:18:08,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:18:08,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:18:04" (1/3) ... [2020-10-12 11:18:08,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679ef51a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:18:08, skipping insertion in model container [2020-10-12 11:18:08,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:18:06" (2/3) ... [2020-10-12 11:18:08,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679ef51a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:18:08, skipping insertion in model container [2020-10-12 11:18:08,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:18:08" (3/3) ... [2020-10-12 11:18:08,342 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label13.c [2020-10-12 11:18:08,352 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:18:08,360 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:18:08,374 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:18:08,399 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:18:08,400 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:18:08,400 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:18:08,400 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:18:08,400 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:18:08,400 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:18:08,400 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:18:08,401 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:18:08,424 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-12 11:18:08,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-12 11:18:08,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:08,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:08,441 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:08,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:08,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1944252984, now seen corresponding path program 1 times [2020-10-12 11:18:08,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:08,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682105191] [2020-10-12 11:18:08,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:08,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:09,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:11,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:11,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-12 11:18:11,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:18:11,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3176 [2020-10-12 11:18:11,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:11,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:18:11,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:18:11,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 11:18:11,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:18:13,160 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-10-12 11:18:13,359 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 74 [2020-10-12 11:18:13,551 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2020-10-12 11:18:13,722 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2020-10-12 11:18:13,961 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2020-10-12 11:18:14,209 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:14,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:14,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:14,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:14,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:14,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:14,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 11:18:14,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:14,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:14,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:14,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:18:14,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:18:14,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682105191] [2020-10-12 11:18:14,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:18:14,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 11:18:14,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52052015] [2020-10-12 11:18:14,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 11:18:14,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:14,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 11:18:14,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:18:14,939 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 12 states. [2020-10-12 11:18:15,288 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-12 11:18:16,005 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 178 [2020-10-12 11:18:16,606 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 178 [2020-10-12 11:18:17,304 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 198 [2020-10-12 11:18:18,352 WARN L193 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 195 [2020-10-12 11:18:19,739 WARN L193 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 192 [2020-10-12 11:18:21,115 WARN L193 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 189 [2020-10-12 11:18:24,088 WARN L193 SmtUtils]: Spent 934.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 186 [2020-10-12 11:18:24,988 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 182 [2020-10-12 11:18:27,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:27,513 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-12 11:18:27,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:18:27,515 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 161 [2020-10-12 11:18:27,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:27,546 INFO L225 Difference]: With dead ends: 737 [2020-10-12 11:18:27,546 INFO L226 Difference]: Without dead ends: 364 [2020-10-12 11:18:27,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-12 11:18:27,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-12 11:18:27,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-12 11:18:27,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-12 11:18:27,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-12 11:18:27,690 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 161 [2020-10-12 11:18:27,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:27,694 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-12 11:18:27,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 11:18:27,694 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-12 11:18:27,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-12 11:18:27,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:27,710 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:27,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:18:27,710 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:27,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:27,711 INFO L82 PathProgramCache]: Analyzing trace with hash 901827759, now seen corresponding path program 1 times [2020-10-12 11:18:27,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:27,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138350096] [2020-10-12 11:18:27,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:27,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:28,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:30,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:31,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:31,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-12 11:18:31,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:18:31,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3905 [2020-10-12 11:18:31,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 11:18:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:18:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 11:18:31,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:32,547 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2020-10-12 11:18:32,707 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2020-10-12 11:18:32,938 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2020-10-12 11:18:33,131 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2020-10-12 11:18:33,321 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2020-10-12 11:18:33,471 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-10-12 11:18:33,843 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:33,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:33,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:33,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:33,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:33,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:33,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 11:18:33,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:33,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:33,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:33,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:18:33,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:34,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:34,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:34,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:34,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:18:34,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:34,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 11:18:34,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:34,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:18:34,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:34,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:18:34,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:18:34,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138350096] [2020-10-12 11:18:34,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:34,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 11:18:34,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947188980] [2020-10-12 11:18:34,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 11:18:34,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:34,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 11:18:34,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:18:34,861 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-12 11:18:35,102 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-12 11:18:35,615 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 92 [2020-10-12 11:18:36,077 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 98 [2020-10-12 11:18:36,658 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 180 [2020-10-12 11:18:37,326 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 200 [2020-10-12 11:18:38,413 WARN L193 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 197 [2020-10-12 11:18:40,347 WARN L193 SmtUtils]: Spent 923.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 194 [2020-10-12 11:18:42,920 WARN L193 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 191 [2020-10-12 11:18:46,076 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 188 [2020-10-12 11:18:46,886 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 183 [2020-10-12 11:18:50,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:50,368 INFO L93 Difference]: Finished difference Result 982 states and 1588 transitions. [2020-10-12 11:18:50,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 11:18:50,370 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2020-10-12 11:18:50,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:50,378 INFO L225 Difference]: With dead ends: 982 [2020-10-12 11:18:50,378 INFO L226 Difference]: Without dead ends: 739 [2020-10-12 11:18:50,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=202, Invalid=554, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:18:50,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-10-12 11:18:50,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 729. [2020-10-12 11:18:50,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2020-10-12 11:18:50,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 984 transitions. [2020-10-12 11:18:50,441 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 984 transitions. Word has length 172 [2020-10-12 11:18:50,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:50,442 INFO L479 AbstractCegarLoop]: Abstraction has 729 states and 984 transitions. [2020-10-12 11:18:50,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 11:18:50,442 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 984 transitions. [2020-10-12 11:18:50,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-12 11:18:50,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:50,448 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:50,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:18:50,449 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:50,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:50,449 INFO L82 PathProgramCache]: Analyzing trace with hash -568787485, now seen corresponding path program 1 times [2020-10-12 11:18:50,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:50,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235017299] [2020-10-12 11:18:50,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:50,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:50,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:52,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:52,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-12 11:18:52,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:18:52,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1891 [2020-10-12 11:18:52,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:18:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:18:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-12 11:18:52,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:18:52,661 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:52,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:52,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:52,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:52,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:52,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:52,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:18:52,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:52,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:18:52,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:52,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:52,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:52,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:52,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:52,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:18:52,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:18:52,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-12 11:18:52,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:52,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:52,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:18:52,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:18:53,079 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 11:18:53,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235017299] [2020-10-12 11:18:53,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:53,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:18:53,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237157222] [2020-10-12 11:18:53,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:18:53,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:53,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:18:53,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:18:53,096 INFO L87 Difference]: Start difference. First operand 729 states and 984 transitions. Second operand 6 states. [2020-10-12 11:18:53,287 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:18:56,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:56,035 INFO L93 Difference]: Finished difference Result 1791 states and 2546 transitions. [2020-10-12 11:18:56,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:18:56,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2020-10-12 11:18:56,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:56,044 INFO L225 Difference]: With dead ends: 1791 [2020-10-12 11:18:56,044 INFO L226 Difference]: Without dead ends: 1183 [2020-10-12 11:18:56,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:18:56,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2020-10-12 11:18:56,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1165. [2020-10-12 11:18:56,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1165 states. [2020-10-12 11:18:56,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1627 transitions. [2020-10-12 11:18:56,093 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1627 transitions. Word has length 182 [2020-10-12 11:18:56,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:56,094 INFO L479 AbstractCegarLoop]: Abstraction has 1165 states and 1627 transitions. [2020-10-12 11:18:56,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:18:56,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1627 transitions. [2020-10-12 11:18:56,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-12 11:18:56,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:56,100 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:56,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:18:56,100 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:56,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:56,100 INFO L82 PathProgramCache]: Analyzing trace with hash -23696304, now seen corresponding path program 1 times [2020-10-12 11:18:56,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:56,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977083569] [2020-10-12 11:18:56,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:56,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:56,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:57,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:00,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:00,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:00,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-12 11:19:00,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:19:00,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4409 [2020-10-12 11:19:00,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:00,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:19:00,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:19:00,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:19:00,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:00,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:00,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:00,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:00,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:00,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:00,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:19:00,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:00,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:00,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:00,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:19:00,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:00,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:19:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:00,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:00,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:00,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:19:00,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:00,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 11:19:00,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:00,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:00,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:00,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:19:00,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:19:00,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:19:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:00,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:00,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:00,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:19:00,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:00,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 11:19:00,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:00,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:00,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:00,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:19:00,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:19:01,056 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 11:19:01,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977083569] [2020-10-12 11:19:01,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:01,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:19:01,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256045541] [2020-10-12 11:19:01,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:19:01,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:01,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:19:01,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:19:01,060 INFO L87 Difference]: Start difference. First operand 1165 states and 1627 transitions. Second operand 7 states. [2020-10-12 11:19:01,198 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:19:03,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:19:03,967 INFO L93 Difference]: Finished difference Result 2704 states and 3976 transitions. [2020-10-12 11:19:03,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 11:19:03,968 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-10-12 11:19:03,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:19:03,984 INFO L225 Difference]: With dead ends: 2704 [2020-10-12 11:19:03,984 INFO L226 Difference]: Without dead ends: 2238 [2020-10-12 11:19:03,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:19:03,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2238 states. [2020-10-12 11:19:04,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2238 to 2206. [2020-10-12 11:19:04,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2206 states. [2020-10-12 11:19:04,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 3136 transitions. [2020-10-12 11:19:04,077 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 3136 transitions. Word has length 191 [2020-10-12 11:19:04,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:19:04,077 INFO L479 AbstractCegarLoop]: Abstraction has 2206 states and 3136 transitions. [2020-10-12 11:19:04,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:19:04,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 3136 transitions. [2020-10-12 11:19:04,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-12 11:19:04,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:19:04,086 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:19:04,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:19:04,087 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:19:04,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:19:04,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1012183628, now seen corresponding path program 1 times [2020-10-12 11:19:04,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:19:04,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779299101] [2020-10-12 11:19:04,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:19:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:04,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:04,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:05,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:05,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:05,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-12 11:19:05,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:19:05,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1656 [2020-10-12 11:19:05,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:05,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:19:05,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:19:05,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-12 11:19:05,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:06,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:06,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:06,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:06,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:06,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:06,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:19:06,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:06,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:19:06,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:06,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:19:06,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:06,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:19:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:06,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:06,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:06,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:19:06,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:06,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 11:19:06,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:06,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:06,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:06,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:19:06,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:06,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:19:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:06,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:06,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:06,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:19:06,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:06,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 11:19:06,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:06,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:06,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:06,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:19:06,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:06,322 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:19:06,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779299101] [2020-10-12 11:19:06,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:06,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:19:06,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778887653] [2020-10-12 11:19:06,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:19:06,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:06,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:19:06,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:19:06,325 INFO L87 Difference]: Start difference. First operand 2206 states and 3136 transitions. Second operand 6 states. [2020-10-12 11:19:06,451 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 11:19:08,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:19:08,894 INFO L93 Difference]: Finished difference Result 6409 states and 9602 transitions. [2020-10-12 11:19:08,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:19:08,894 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 193 [2020-10-12 11:19:08,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:19:08,921 INFO L225 Difference]: With dead ends: 6409 [2020-10-12 11:19:08,922 INFO L226 Difference]: Without dead ends: 4324 [2020-10-12 11:19:08,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:19:08,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4324 states. [2020-10-12 11:19:09,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4324 to 4025. [2020-10-12 11:19:09,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4025 states. [2020-10-12 11:19:09,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4025 states to 4025 states and 5738 transitions. [2020-10-12 11:19:09,057 INFO L78 Accepts]: Start accepts. Automaton has 4025 states and 5738 transitions. Word has length 193 [2020-10-12 11:19:09,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:19:09,058 INFO L479 AbstractCegarLoop]: Abstraction has 4025 states and 5738 transitions. [2020-10-12 11:19:09,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:19:09,058 INFO L276 IsEmpty]: Start isEmpty. Operand 4025 states and 5738 transitions. [2020-10-12 11:19:09,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-12 11:19:09,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:19:09,069 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:19:09,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:19:09,069 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:19:09,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:19:09,070 INFO L82 PathProgramCache]: Analyzing trace with hash -124599840, now seen corresponding path program 1 times [2020-10-12 11:19:09,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:19:09,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097173504] [2020-10-12 11:19:09,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:19:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:09,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:09,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:10,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:12,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:12,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-12 11:19:12,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:19:12,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3409 [2020-10-12 11:19:12,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:12,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:19:12,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:19:12,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 11:19:12,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:12,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:12,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:12,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:12,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:12,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:12,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:19:12,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:12,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:12,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:12,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:19:12,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:12,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:19:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:12,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:12,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:12,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:12,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:19:12,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:19:12,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 11:19:12,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:12,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:12,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:12,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:19:12,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:12,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:19:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:12,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:12,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:12,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:19:12,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:12,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 11:19:12,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:12,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:12,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:12,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:19:12,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:19:13,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097173504] [2020-10-12 11:19:13,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:13,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:19:13,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617492524] [2020-10-12 11:19:13,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:19:13,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:13,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:19:13,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:19:13,028 INFO L87 Difference]: Start difference. First operand 4025 states and 5738 transitions. Second operand 8 states. [2020-10-12 11:19:14,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:19:14,684 INFO L93 Difference]: Finished difference Result 5820 states and 8582 transitions. [2020-10-12 11:19:14,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:19:14,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-10-12 11:19:14,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:19:14,710 INFO L225 Difference]: With dead ends: 5820 [2020-10-12 11:19:14,710 INFO L226 Difference]: Without dead ends: 3986 [2020-10-12 11:19:14,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:19:14,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2020-10-12 11:19:14,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 3980. [2020-10-12 11:19:14,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3980 states. [2020-10-12 11:19:14,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3980 states to 3980 states and 5559 transitions. [2020-10-12 11:19:14,842 INFO L78 Accepts]: Start accepts. Automaton has 3980 states and 5559 transitions. Word has length 199 [2020-10-12 11:19:14,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:19:14,842 INFO L479 AbstractCegarLoop]: Abstraction has 3980 states and 5559 transitions. [2020-10-12 11:19:14,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:19:14,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3980 states and 5559 transitions. [2020-10-12 11:19:14,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-12 11:19:14,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:19:14,852 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:19:14,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:19:14,853 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:19:14,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:19:14,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1526644237, now seen corresponding path program 1 times [2020-10-12 11:19:14,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:19:14,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720129173] [2020-10-12 11:19:14,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:19:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:14,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:14,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:15,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:15,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:15,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:15,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:17,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:17,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:18,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:18,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:19,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:19,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-12 11:19:19,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 11:19:19,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 11:19:19,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:19,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:19:19,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 11:19:19,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-12 11:19:19,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:20,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:20,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:20,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:20,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:20,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:20,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:19:20,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:20,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:19:20,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:20,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:19:20,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:20,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:19:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:20,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:20,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:20,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:19:20,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:20,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 11:19:20,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:20,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:19:20,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:20,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:19:20,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:20,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:19:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:20,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:20,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:20,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:20,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:19:20,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:19:20,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:19:20,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:20,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:20,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 11:19:20,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:19:20,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:20,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 11:19:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:20,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:20,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:20,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:20,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:20,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:19:20,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:19:20,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 11:19:20,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:20,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:19:20,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 38 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 11:19:20,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720129173] [2020-10-12 11:19:20,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:20,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 11:19:20,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735305775] [2020-10-12 11:19:20,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:19:20,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:20,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:19:20,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:19:20,382 INFO L87 Difference]: Start difference. First operand 3980 states and 5559 transitions. Second operand 9 states. [2020-10-12 11:19:20,532 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:19:20,811 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:19:20,944 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:19:23,551 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:19:24,303 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:19:25,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:19:25,369 INFO L93 Difference]: Finished difference Result 14322 states and 23386 transitions. [2020-10-12 11:19:25,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:19:25,370 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 203 [2020-10-12 11:19:25,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:19:25,446 INFO L225 Difference]: With dead ends: 14322 [2020-10-12 11:19:25,447 INFO L226 Difference]: Without dead ends: 10463 [2020-10-12 11:19:25,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2020-10-12 11:19:25,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10463 states. [2020-10-12 11:19:25,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10463 to 10197. [2020-10-12 11:19:25,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10197 states. [2020-10-12 11:19:25,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10197 states to 10197 states and 15052 transitions. [2020-10-12 11:19:25,886 INFO L78 Accepts]: Start accepts. Automaton has 10197 states and 15052 transitions. Word has length 203 [2020-10-12 11:19:25,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:19:25,886 INFO L479 AbstractCegarLoop]: Abstraction has 10197 states and 15052 transitions. [2020-10-12 11:19:25,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:19:25,886 INFO L276 IsEmpty]: Start isEmpty. Operand 10197 states and 15052 transitions. [2020-10-12 11:19:25,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-12 11:19:25,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:19:25,916 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:19:25,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:19:25,917 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:19:25,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:19:25,917 INFO L82 PathProgramCache]: Analyzing trace with hash -94114615, now seen corresponding path program 1 times [2020-10-12 11:19:25,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:19:25,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754540816] [2020-10-12 11:19:25,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:19:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:26,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:26,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:26,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:27,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:27,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-12 11:19:27,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:19:27,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1711 [2020-10-12 11:19:27,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:27,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:19:27,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:19:27,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-12 11:19:27,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:27,895 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:19:27,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:27,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:27,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:27,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:27,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:27,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:19:27,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:27,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:19:27,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:27,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:19:27,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:27,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:19:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:28,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:28,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:28,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:19:28,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:28,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 11:19:28,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:28,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:28,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:19:28,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:28,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:19:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:28,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:28,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:28,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 11:19:28,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:28,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-12 11:19:28,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:28,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:28,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:28,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 11:19:28,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:28,359 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 34 proven. 59 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:19:28,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754540816] [2020-10-12 11:19:28,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:28,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:19:28,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461519695] [2020-10-12 11:19:28,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:19:28,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:28,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:19:28,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:19:28,361 INFO L87 Difference]: Start difference. First operand 10197 states and 15052 transitions. Second operand 6 states. [2020-10-12 11:19:28,496 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:19:31,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:19:31,005 INFO L93 Difference]: Finished difference Result 27468 states and 42507 transitions. [2020-10-12 11:19:31,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:19:31,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 244 [2020-10-12 11:19:31,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:19:31,094 INFO L225 Difference]: With dead ends: 27468 [2020-10-12 11:19:31,094 INFO L226 Difference]: Without dead ends: 17392 [2020-10-12 11:19:31,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:19:31,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17392 states. [2020-10-12 11:19:31,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17392 to 17003. [2020-10-12 11:19:31,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17003 states. [2020-10-12 11:19:31,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17003 states to 17003 states and 25368 transitions. [2020-10-12 11:19:31,735 INFO L78 Accepts]: Start accepts. Automaton has 17003 states and 25368 transitions. Word has length 244 [2020-10-12 11:19:31,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:19:31,735 INFO L479 AbstractCegarLoop]: Abstraction has 17003 states and 25368 transitions. [2020-10-12 11:19:31,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:19:31,736 INFO L276 IsEmpty]: Start isEmpty. Operand 17003 states and 25368 transitions. [2020-10-12 11:19:31,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-12 11:19:31,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:19:31,788 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:19:31,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:19:31,788 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:19:31,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:19:31,789 INFO L82 PathProgramCache]: Analyzing trace with hash 700031122, now seen corresponding path program 1 times [2020-10-12 11:19:31,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:19:31,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145410713] [2020-10-12 11:19:31,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:19:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:31,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:31,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:32,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:33,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:36,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:36,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-12 11:19:36,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:19:36,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-12 11:19:36,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:36,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:19:36,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:19:36,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 11:19:36,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:37,051 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:19:37,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:37,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:37,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:37,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:37,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:37,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:19:37,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:37,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:19:37,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:37,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:19:37,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:37,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:19:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:37,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:37,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:37,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:19:37,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:37,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 11:19:37,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:37,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:37,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:19:37,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:37,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:19:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:37,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:37,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:37,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:37,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:19:37,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:19:37,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 11:19:37,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:37,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:37,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:37,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:19:37,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:37,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 11:19:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:37,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:37,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:37,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 11:19:37,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:37,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-12 11:19:37,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 11:19:37,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:37,504 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 105 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 11:19:37,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145410713] [2020-10-12 11:19:37,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:37,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:19:37,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538598172] [2020-10-12 11:19:37,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:19:37,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:37,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:19:37,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:19:37,506 INFO L87 Difference]: Start difference. First operand 17003 states and 25368 transitions. Second operand 7 states. [2020-10-12 11:19:37,736 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:19:38,275 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:19:41,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:19:41,492 INFO L93 Difference]: Finished difference Result 38728 states and 62094 transitions. [2020-10-12 11:19:41,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:19:41,492 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-10-12 11:19:41,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:19:41,599 INFO L225 Difference]: With dead ends: 38728 [2020-10-12 11:19:41,600 INFO L226 Difference]: Without dead ends: 22266 [2020-10-12 11:19:41,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:19:41,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22266 states. [2020-10-12 11:19:42,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22266 to 22244. [2020-10-12 11:19:42,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22244 states. [2020-10-12 11:19:42,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22244 states to 22244 states and 34728 transitions. [2020-10-12 11:19:42,427 INFO L78 Accepts]: Start accepts. Automaton has 22244 states and 34728 transitions. Word has length 254 [2020-10-12 11:19:42,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:19:42,428 INFO L479 AbstractCegarLoop]: Abstraction has 22244 states and 34728 transitions. [2020-10-12 11:19:42,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:19:42,428 INFO L276 IsEmpty]: Start isEmpty. Operand 22244 states and 34728 transitions. [2020-10-12 11:19:42,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-12 11:19:42,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:19:42,493 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:19:42,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 11:19:42,493 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:19:42,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:19:42,494 INFO L82 PathProgramCache]: Analyzing trace with hash 262942125, now seen corresponding path program 1 times [2020-10-12 11:19:42,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:19:42,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121051681] [2020-10-12 11:19:42,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:19:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:42,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:43,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:44,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:44,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-12 11:19:44,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:19:44,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2199 [2020-10-12 11:19:44,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:44,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:19:44,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:19:44,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 11:19:44,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:45,057 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:19:45,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:45,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:45,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:45,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:45,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:45,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:19:45,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:45,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:45,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:45,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:19:45,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:45,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:19:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:45,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:45,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:45,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:45,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:19:45,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:19:45,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 11:19:45,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:19:45,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:45,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:19:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:45,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:45,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:45,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 11:19:45,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:45,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-12 11:19:45,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 11:19:45,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:45,554 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:19:45,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121051681] [2020-10-12 11:19:45,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:45,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:19:45,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983847143] [2020-10-12 11:19:45,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:19:45,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:45,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:19:45,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:19:45,557 INFO L87 Difference]: Start difference. First operand 22244 states and 34728 transitions. Second operand 8 states. [2020-10-12 11:19:45,720 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:19:46,965 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:19:48,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:19:48,925 INFO L93 Difference]: Finished difference Result 53823 states and 85521 transitions. [2020-10-12 11:19:48,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:19:48,926 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 259 [2020-10-12 11:19:48,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:19:49,076 INFO L225 Difference]: With dead ends: 53823 [2020-10-12 11:19:49,076 INFO L226 Difference]: Without dead ends: 32170 [2020-10-12 11:19:49,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:19:49,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32170 states. [2020-10-12 11:19:49,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32170 to 32022. [2020-10-12 11:19:49,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32022 states. [2020-10-12 11:19:50,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32022 states to 32022 states and 49879 transitions. [2020-10-12 11:19:50,020 INFO L78 Accepts]: Start accepts. Automaton has 32022 states and 49879 transitions. Word has length 259 [2020-10-12 11:19:50,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:19:50,021 INFO L479 AbstractCegarLoop]: Abstraction has 32022 states and 49879 transitions. [2020-10-12 11:19:50,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:19:50,021 INFO L276 IsEmpty]: Start isEmpty. Operand 32022 states and 49879 transitions. [2020-10-12 11:19:50,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-12 11:19:50,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:19:50,080 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:19:50,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 11:19:50,081 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:19:50,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:19:50,081 INFO L82 PathProgramCache]: Analyzing trace with hash -868663515, now seen corresponding path program 1 times [2020-10-12 11:19:50,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:19:50,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902584872] [2020-10-12 11:19:50,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:19:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:50,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:50,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:51,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:51,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:53,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:54,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:55,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:55,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-12 11:19:55,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 11:19:55,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 11:19:55,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:55,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 11:19:55,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:19:55,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 11:19:55,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:55,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:55,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:55,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:55,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:55,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:55,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:19:55,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:19:55,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:55,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:19:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:55,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:55,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:55,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:19:55,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:55,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 11:19:55,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:55,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:19:55,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:55,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:19:55,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:55,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:19:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:55,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:55,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:55,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 11:19:55,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:55,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 11:19:55,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:55,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:55,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:55,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 11:19:55,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:55,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 11:19:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:55,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:55,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:55,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 11:19:55,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:55,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-12 11:19:55,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:55,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:55,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:55,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 11:19:55,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:56,021 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 123 proven. 29 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 11:19:56,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902584872] [2020-10-12 11:19:56,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:56,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 11:19:56,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478070252] [2020-10-12 11:19:56,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 11:19:56,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:56,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 11:19:56,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:19:56,023 INFO L87 Difference]: Start difference. First operand 32022 states and 49879 transitions. Second operand 11 states. [2020-10-12 11:19:56,165 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:19:56,760 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 132 [2020-10-12 11:19:57,963 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2020-10-12 11:19:58,338 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 11:20:00,387 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 129 [2020-10-12 11:20:04,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:04,359 INFO L93 Difference]: Finished difference Result 82603 states and 148587 transitions. [2020-10-12 11:20:04,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 11:20:04,361 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 276 [2020-10-12 11:20:04,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:04,808 INFO L225 Difference]: With dead ends: 82603 [2020-10-12 11:20:04,808 INFO L226 Difference]: Without dead ends: 64189 [2020-10-12 11:20:04,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=226, Invalid=704, Unknown=0, NotChecked=0, Total=930 [2020-10-12 11:20:04,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64189 states. [2020-10-12 11:20:07,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64189 to 62491. [2020-10-12 11:20:07,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62491 states. [2020-10-12 11:20:07,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62491 states to 62491 states and 98240 transitions. [2020-10-12 11:20:07,323 INFO L78 Accepts]: Start accepts. Automaton has 62491 states and 98240 transitions. Word has length 276 [2020-10-12 11:20:07,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:07,324 INFO L479 AbstractCegarLoop]: Abstraction has 62491 states and 98240 transitions. [2020-10-12 11:20:07,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 11:20:07,324 INFO L276 IsEmpty]: Start isEmpty. Operand 62491 states and 98240 transitions. [2020-10-12 11:20:07,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-12 11:20:07,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:07,431 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:20:07,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 11:20:07,432 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:07,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:07,432 INFO L82 PathProgramCache]: Analyzing trace with hash 879287006, now seen corresponding path program 1 times [2020-10-12 11:20:07,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:07,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092978170] [2020-10-12 11:20:07,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:07,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:07,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:09,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:10,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:12,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:12,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-12 11:20:12,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:20:12,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 11:20:12,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:12,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:20:12,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:20:12,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-12 11:20:12,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:12,703 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:20:12,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:12,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:12,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:12,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:12,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:12,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:20:12,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:20:12,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:12,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:20:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:12,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:12,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:12,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:20:12,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:12,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:20:12,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:12,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:12,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:12,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:20:12,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:12,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:20:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:12,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:12,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:12,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:20:12,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:12,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 11:20:12,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:12,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:20:12,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:12,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 11:20:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:12,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:13,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:13,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 11:20:13,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:13,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-12 11:20:13,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:13,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:13,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:13,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 11:20:13,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:13,426 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 117 proven. 33 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 11:20:13,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092978170] [2020-10-12 11:20:13,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:20:13,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:20:13,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399353942] [2020-10-12 11:20:13,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:20:13,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:13,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:20:13,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:20:13,427 INFO L87 Difference]: Start difference. First operand 62491 states and 98240 transitions. Second operand 9 states. [2020-10-12 11:20:13,559 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:20:14,391 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:20:17,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:17,288 INFO L93 Difference]: Finished difference Result 164118 states and 273202 transitions. [2020-10-12 11:20:17,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:20:17,289 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 281 [2020-10-12 11:20:17,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:17,828 INFO L225 Difference]: With dead ends: 164118 [2020-10-12 11:20:17,828 INFO L226 Difference]: Without dead ends: 104790 [2020-10-12 11:20:18,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:20:18,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104790 states. [2020-10-12 11:20:21,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104790 to 103208. [2020-10-12 11:20:21,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103208 states. [2020-10-12 11:20:21,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103208 states to 103208 states and 156842 transitions. [2020-10-12 11:20:21,610 INFO L78 Accepts]: Start accepts. Automaton has 103208 states and 156842 transitions. Word has length 281 [2020-10-12 11:20:21,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:21,611 INFO L479 AbstractCegarLoop]: Abstraction has 103208 states and 156842 transitions. [2020-10-12 11:20:21,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:20:21,611 INFO L276 IsEmpty]: Start isEmpty. Operand 103208 states and 156842 transitions. [2020-10-12 11:20:21,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-12 11:20:21,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:21,838 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:20:21,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 11:20:21,839 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:21,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:21,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1244269664, now seen corresponding path program 1 times [2020-10-12 11:20:21,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:21,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309544797] [2020-10-12 11:20:21,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:22,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:22,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:22,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:24,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:26,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:26,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-12 11:20:26,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:20:26,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 11:20:26,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 11:20:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 11:20:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-12 11:20:26,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:27,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:27,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:27,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:27,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:27,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:27,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:20:27,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:27,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:20:27,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:27,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:20:27,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:27,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:20:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:27,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:27,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:27,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:20:27,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:27,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:20:27,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 11:20:27,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:27,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:20:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:27,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:27,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:27,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:20:27,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:27,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 11:20:27,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:27,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:20:27,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:27,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:20:27,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:27,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 11:20:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:27,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:27,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:27,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:20:27,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:27,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-12 11:20:27,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:27,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:27,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:27,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 11:20:27,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:20:27,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-12 11:20:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:27,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:27,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:27,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 11:20:27,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:27,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-12 11:20:27,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:27,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:27,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:27,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 11:20:27,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 175 proven. 70 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-12 11:20:28,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309544797] [2020-10-12 11:20:28,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:20:28,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 11:20:28,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567539778] [2020-10-12 11:20:28,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 11:20:28,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:28,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 11:20:28,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:20:28,004 INFO L87 Difference]: Start difference. First operand 103208 states and 156842 transitions. Second operand 10 states. [2020-10-12 11:20:28,132 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:20:28,531 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:20:29,427 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:20:29,872 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:20:30,660 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:20:31,600 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:20:31,919 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2020-10-12 11:20:38,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:38,829 INFO L93 Difference]: Finished difference Result 235301 states and 369659 transitions. [2020-10-12 11:20:38,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 11:20:38,829 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 326 [2020-10-12 11:20:38,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:39,390 INFO L225 Difference]: With dead ends: 235301 [2020-10-12 11:20:39,391 INFO L226 Difference]: Without dead ends: 136380 [2020-10-12 11:20:39,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=298, Invalid=1184, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 11:20:39,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136380 states. [2020-10-12 11:20:45,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136380 to 135298. [2020-10-12 11:20:45,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135298 states. [2020-10-12 11:20:46,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135298 states to 135298 states and 187502 transitions. [2020-10-12 11:20:46,113 INFO L78 Accepts]: Start accepts. Automaton has 135298 states and 187502 transitions. Word has length 326 [2020-10-12 11:20:46,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:46,114 INFO L479 AbstractCegarLoop]: Abstraction has 135298 states and 187502 transitions. [2020-10-12 11:20:46,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 11:20:46,114 INFO L276 IsEmpty]: Start isEmpty. Operand 135298 states and 187502 transitions. [2020-10-12 11:20:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-12 11:20:46,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:46,246 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:20:46,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 11:20:46,246 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:46,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:46,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1112418184, now seen corresponding path program 1 times [2020-10-12 11:20:46,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:46,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376680241] [2020-10-12 11:20:46,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:46,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:46,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:47,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:49,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:51,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:51,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-12 11:20:51,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:20:51,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-12 11:20:51,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:51,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:20:51,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:20:51,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-12 11:20:51,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:51,568 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:20:51,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:51,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:51,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:51,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:51,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:51,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:20:51,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:51,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:51,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:51,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:20:51,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:51,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:20:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:51,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:51,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:51,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:20:51,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:51,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 11:20:51,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:20:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:20:51,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:51,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:20:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:51,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:51,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:51,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 11:20:51,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:51,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 11:20:51,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:51,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:51,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:51,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 11:20:51,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:51,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 11:20:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:51,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:52,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:52,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:20:52,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:52,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 549 [2020-10-12 11:20:52,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:52,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:20:52,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:52,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 11:20:52,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:52,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-12 11:20:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:52,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:52,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:52,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 11:20:52,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:52,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-12 11:20:52,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 11:20:52,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:52,957 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 230 proven. 85 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 11:20:52,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376680241] [2020-10-12 11:20:52,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:20:52,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 11:20:52,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725231120] [2020-10-12 11:20:52,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 11:20:52,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:52,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 11:20:52,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:20:52,959 INFO L87 Difference]: Start difference. First operand 135298 states and 187502 transitions. Second operand 14 states. [2020-10-12 11:20:53,238 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 132 [2020-10-12 11:20:53,655 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:20:54,482 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 134 [2020-10-12 11:20:55,205 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:20:55,915 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 133 [2020-10-12 11:21:01,836 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 11:21:02,127 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 137 [2020-10-12 11:21:02,546 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 134 [2020-10-12 11:21:03,176 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:21:05,607 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 11:21:06,871 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2020-10-12 11:21:12,037 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:21:13,172 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 11:21:14,766 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 137 [2020-10-12 11:21:15,683 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 11:21:18,490 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 133 [2020-10-12 11:21:21,304 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 135 [2020-10-12 11:21:22,633 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 136