/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:31:45,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:31:45,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:31:45,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:31:45,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:31:45,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:31:45,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:31:45,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:31:45,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:31:45,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:31:45,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:31:45,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:31:45,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:31:45,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:31:45,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:31:45,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:31:45,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:31:45,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:31:45,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:31:45,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:31:45,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:31:45,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:31:45,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:31:45,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:31:45,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:31:45,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:31:45,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:31:45,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:31:45,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:31:45,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:31:45,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:31:45,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:31:45,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:31:45,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:31:45,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:31:45,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:31:45,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:31:45,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:31:45,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:31:45,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:31:45,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:31:45,469 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 [2020-09-21 12:31:45,519 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:31:45,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:31:45,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:31:45,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:31:45,522 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:31:45,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:31:45,523 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:31:45,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:31:45,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:31:45,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:31:45,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:31:45,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:31:45,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:31:45,526 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:31:45,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:31:45,526 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:31:45,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:31:45,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:31:45,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:31:45,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:31:45,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:31:45,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:31:45,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:31:45,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:31:45,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:31:45,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:31:45,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:31:45,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:31:45,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:31:45,529 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.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:31:46,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:31:46,055 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:31:46,060 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:31:46,062 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:31:46,063 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:31:46,064 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-09-21 12:31:46,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/660d7f2d4/7c0acd4dfdf547baa20d9158961b1370/FLAGa1a7335ea [2020-09-21 12:31:46,876 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:31:46,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-09-21 12:31:46,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/660d7f2d4/7c0acd4dfdf547baa20d9158961b1370/FLAGa1a7335ea [2020-09-21 12:31:47,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/660d7f2d4/7c0acd4dfdf547baa20d9158961b1370 [2020-09-21 12:31:47,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:31:47,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:31:47,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:31:47,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:31:47,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:31:47,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:31:47" (1/1) ... [2020-09-21 12:31:47,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738c85d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:47, skipping insertion in model container [2020-09-21 12:31:47,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:31:47" (1/1) ... [2020-09-21 12:31:47,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:31:47,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:31:47,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:31:47,819 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:31:47,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:31:47,934 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:31:47,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:47 WrapperNode [2020-09-21 12:31:47,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:31:47,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:31:47,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:31:47,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:31:47,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:47" (1/1) ... [2020-09-21 12:31:47,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:47" (1/1) ... [2020-09-21 12:31:47,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:47" (1/1) ... [2020-09-21 12:31:47,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:47" (1/1) ... [2020-09-21 12:31:48,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:47" (1/1) ... [2020-09-21 12:31:48,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:47" (1/1) ... [2020-09-21 12:31:48,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:47" (1/1) ... [2020-09-21 12:31:48,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:31:48,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:31:48,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:31:48,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:31:48,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:31:48,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:31:48,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:31:48,178 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-21 12:31:48,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:31:48,178 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-21 12:31:48,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:31:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:31:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:31:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:31:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:31:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:31:49,650 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:31:49,651 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:31:49,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:31:49 BoogieIcfgContainer [2020-09-21 12:31:49,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:31:49,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:31:49,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:31:49,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:31:49,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:31:47" (1/3) ... [2020-09-21 12:31:49,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4567e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:31:49, skipping insertion in model container [2020-09-21 12:31:49,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:31:47" (2/3) ... [2020-09-21 12:31:49,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4567e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:31:49, skipping insertion in model container [2020-09-21 12:31:49,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:31:49" (3/3) ... [2020-09-21 12:31:49,669 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label40.c [2020-09-21 12:31:49,682 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:31:49,693 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:31:49,717 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:31:49,749 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:31:49,750 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:31:49,750 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:31:49,750 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:31:49,750 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:31:49,751 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:31:49,751 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:31:49,751 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:31:49,780 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-09-21 12:31:49,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-21 12:31:49,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:31:49,791 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] [2020-09-21 12:31:49,791 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:31:49,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:31:49,800 INFO L82 PathProgramCache]: Analyzing trace with hash -576444522, now seen corresponding path program 1 times [2020-09-21 12:31:49,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:31:49,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585350901] [2020-09-21 12:31:49,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:31:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:50,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:50,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:50,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-21 12:31:50,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:50,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-09-21 12:31:50,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:50,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:31:50,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:31:50,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-21 12:31:50,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:31:50,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:31:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:50,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:50,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:50,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:31:50,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:50,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:31:50,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:50,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:31:50,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:50,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:31:50,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:31:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:31:50,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585350901] [2020-09-21 12:31:50,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:31:50,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:31:50,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752502295] [2020-09-21 12:31:50,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:31:50,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:31:50,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:31:50,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:31:50,767 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 5 states. [2020-09-21 12:31:53,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:31:53,114 INFO L93 Difference]: Finished difference Result 730 states and 1302 transitions. [2020-09-21 12:31:53,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:31:53,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-09-21 12:31:53,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:31:53,139 INFO L225 Difference]: With dead ends: 730 [2020-09-21 12:31:53,140 INFO L226 Difference]: Without dead ends: 447 [2020-09-21 12:31:53,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:31:53,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-09-21 12:31:53,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 441. [2020-09-21 12:31:53,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-09-21 12:31:53,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 648 transitions. [2020-09-21 12:31:53,248 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 648 transitions. Word has length 55 [2020-09-21 12:31:53,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:31:53,249 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 648 transitions. [2020-09-21 12:31:53,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:31:53,249 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 648 transitions. [2020-09-21 12:31:53,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-21 12:31:53,257 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:31:53,258 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:31:53,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:31:53,258 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:31:53,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:31:53,259 INFO L82 PathProgramCache]: Analyzing trace with hash 952189433, now seen corresponding path program 1 times [2020-09-21 12:31:53,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:31:53,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301982926] [2020-09-21 12:31:53,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:31:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:53,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:53,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:54,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:54,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-21 12:31:54,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:31:54,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 756 [2020-09-21 12:31:54,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:54,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:31:54,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-09-21 12:31:54,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 12:31:54,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:31:54,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:31:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:54,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:54,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:54,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:31:54,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:54,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:31:54,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:54,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:31:54,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:54,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:31:54,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:31:54,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:31:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:54,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:54,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:54,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 12:31:54,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:54,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-21 12:31:54,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:31:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-21 12:31:54,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:31:54,450 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:31:54,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301982926] [2020-09-21 12:31:54,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:31:54,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:31:54,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979983599] [2020-09-21 12:31:54,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:31:54,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:31:54,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:31:54,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:31:54,455 INFO L87 Difference]: Start difference. First operand 441 states and 648 transitions. Second operand 5 states. [2020-09-21 12:31:55,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:31:55,459 INFO L93 Difference]: Finished difference Result 905 states and 1333 transitions. [2020-09-21 12:31:55,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:31:55,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-21 12:31:55,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:31:55,465 INFO L225 Difference]: With dead ends: 905 [2020-09-21 12:31:55,465 INFO L226 Difference]: Without dead ends: 447 [2020-09-21 12:31:55,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:31:55,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-09-21 12:31:55,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 441. [2020-09-21 12:31:55,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-09-21 12:31:55,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 645 transitions. [2020-09-21 12:31:55,500 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 645 transitions. Word has length 134 [2020-09-21 12:31:55,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:31:55,500 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 645 transitions. [2020-09-21 12:31:55,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:31:55,501 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 645 transitions. [2020-09-21 12:31:55,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-21 12:31:55,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:31:55,508 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:31:55,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:31:55,508 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:31:55,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:31:55,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1660242698, now seen corresponding path program 1 times [2020-09-21 12:31:55,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:31:55,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199073520] [2020-09-21 12:31:55,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:31:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:55,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:55,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:56,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:56,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-21 12:31:56,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:31:56,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-21 12:31:56,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:56,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:31:56,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-09-21 12:31:56,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 12:31:56,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:31:56,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:31:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:56,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:56,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:56,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:31:56,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:56,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:31:56,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:56,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:31:56,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:56,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:31:56,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:31:56,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:31:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:56,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:56,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:56,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-21 12:31:56,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:56,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-21 12:31:56,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:56,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:31:56,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:56,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 12:31:56,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:31:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:31:56,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199073520] [2020-09-21 12:31:56,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:31:56,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:31:56,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127895912] [2020-09-21 12:31:56,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:31:56,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:31:56,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:31:56,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:31:56,969 INFO L87 Difference]: Start difference. First operand 441 states and 645 transitions. Second operand 5 states. [2020-09-21 12:31:57,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:31:57,891 INFO L93 Difference]: Finished difference Result 898 states and 1320 transitions. [2020-09-21 12:31:57,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:31:57,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-21 12:31:57,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:31:57,896 INFO L225 Difference]: With dead ends: 898 [2020-09-21 12:31:57,896 INFO L226 Difference]: Without dead ends: 447 [2020-09-21 12:31:57,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:31:57,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-09-21 12:31:57,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 441. [2020-09-21 12:31:57,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-09-21 12:31:57,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 642 transitions. [2020-09-21 12:31:57,929 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 642 transitions. Word has length 137 [2020-09-21 12:31:57,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:31:57,930 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 642 transitions. [2020-09-21 12:31:57,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:31:57,930 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 642 transitions. [2020-09-21 12:31:57,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-21 12:31:57,935 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:31:57,935 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:31:57,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:31:57,936 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:31:57,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:31:57,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1800499558, now seen corresponding path program 1 times [2020-09-21 12:31:57,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:31:57,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920006999] [2020-09-21 12:31:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:31:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:58,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:58,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:59,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:59,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-21 12:31:59,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:31:59,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1042 [2020-09-21 12:31:59,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:59,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:31:59,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-21 12:31:59,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:31:59,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:31:59,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:31:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:59,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:59,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:59,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:31:59,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:59,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:31:59,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:31:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:59,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:31:59,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:31:59,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:31:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:31:59,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:31:59,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:31:59,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-21 12:31:59,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:31:59,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-21 12:31:59,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:31:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:31:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:31:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-21 12:31:59,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:31:59,255 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:31:59,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920006999] [2020-09-21 12:31:59,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:31:59,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:31:59,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744342559] [2020-09-21 12:31:59,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:31:59,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:31:59,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:31:59,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:31:59,260 INFO L87 Difference]: Start difference. First operand 441 states and 642 transitions. Second operand 5 states. [2020-09-21 12:32:00,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:00,201 INFO L93 Difference]: Finished difference Result 897 states and 1313 transitions. [2020-09-21 12:32:00,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:00,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-09-21 12:32:00,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:00,206 INFO L225 Difference]: With dead ends: 897 [2020-09-21 12:32:00,206 INFO L226 Difference]: Without dead ends: 447 [2020-09-21 12:32:00,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:00,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-09-21 12:32:00,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 441. [2020-09-21 12:32:00,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-09-21 12:32:00,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 639 transitions. [2020-09-21 12:32:00,224 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 639 transitions. Word has length 145 [2020-09-21 12:32:00,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:00,225 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 639 transitions. [2020-09-21 12:32:00,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:00,225 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 639 transitions. [2020-09-21 12:32:00,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-21 12:32:00,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:00,227 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:00,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:32:00,228 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:00,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:00,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1335537110, now seen corresponding path program 1 times [2020-09-21 12:32:00,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:00,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195356622] [2020-09-21 12:32:00,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:00,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:00,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:01,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:01,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-21 12:32:01,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:01,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-21 12:32:01,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:01,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:01,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-09-21 12:32:01,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-21 12:32:01,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:01,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:01,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:01,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:01,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:01,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:01,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:01,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:01,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:01,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:01,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:01,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:01,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:01,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:01,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:01,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-21 12:32:01,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:01,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-21 12:32:01,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:01,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:01,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:01,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-21 12:32:01,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:01,626 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:01,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195356622] [2020-09-21 12:32:01,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:01,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:01,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605665075] [2020-09-21 12:32:01,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:01,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:01,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:01,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:01,630 INFO L87 Difference]: Start difference. First operand 441 states and 639 transitions. Second operand 5 states. [2020-09-21 12:32:02,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:02,646 INFO L93 Difference]: Finished difference Result 899 states and 1309 transitions. [2020-09-21 12:32:02,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:02,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-09-21 12:32:02,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:02,655 INFO L225 Difference]: With dead ends: 899 [2020-09-21 12:32:02,655 INFO L226 Difference]: Without dead ends: 447 [2020-09-21 12:32:02,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:02,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-09-21 12:32:02,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 441. [2020-09-21 12:32:02,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-09-21 12:32:02,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 636 transitions. [2020-09-21 12:32:02,689 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 636 transitions. Word has length 153 [2020-09-21 12:32:02,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:02,690 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 636 transitions. [2020-09-21 12:32:02,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:02,694 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 636 transitions. [2020-09-21 12:32:02,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-21 12:32:02,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:02,701 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:02,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:32:02,701 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:02,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:02,702 INFO L82 PathProgramCache]: Analyzing trace with hash -296475546, now seen corresponding path program 1 times [2020-09-21 12:32:02,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:02,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614892962] [2020-09-21 12:32:02,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:02,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:02,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:03,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:03,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-21 12:32:03,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:03,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-09-21 12:32:03,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:03,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-09-21 12:32:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 12:32:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:03,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:03,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:03,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:03,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:03,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:03,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:03,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:03,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:03,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:03,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:03,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:03,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:03,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:04,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:04,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-21 12:32:04,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:04,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-21 12:32:04,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:04,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:04,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:04,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-21 12:32:04,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:04,221 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:04,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614892962] [2020-09-21 12:32:04,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:04,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:04,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352823035] [2020-09-21 12:32:04,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:04,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:04,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:04,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:04,225 INFO L87 Difference]: Start difference. First operand 441 states and 636 transitions. Second operand 5 states. [2020-09-21 12:32:05,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:05,133 INFO L93 Difference]: Finished difference Result 901 states and 1305 transitions. [2020-09-21 12:32:05,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:05,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-21 12:32:05,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:05,137 INFO L225 Difference]: With dead ends: 901 [2020-09-21 12:32:05,137 INFO L226 Difference]: Without dead ends: 447 [2020-09-21 12:32:05,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:05,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-09-21 12:32:05,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 441. [2020-09-21 12:32:05,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-09-21 12:32:05,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 633 transitions. [2020-09-21 12:32:05,158 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 633 transitions. Word has length 167 [2020-09-21 12:32:05,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:05,159 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 633 transitions. [2020-09-21 12:32:05,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:05,159 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 633 transitions. [2020-09-21 12:32:05,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-21 12:32:05,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:05,161 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:05,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:32:05,162 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:05,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:05,162 INFO L82 PathProgramCache]: Analyzing trace with hash 528848677, now seen corresponding path program 1 times [2020-09-21 12:32:05,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:05,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540276666] [2020-09-21 12:32:05,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:05,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:05,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:06,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:06,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-21 12:32:06,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:06,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-09-21 12:32:06,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:06,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:06,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-21 12:32:06,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:32:06,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:06,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:06,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:06,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:06,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:06,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:06,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:06,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:06,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:06,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:06,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:06,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:06,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:06,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:06,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 12:32:06,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:06,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-21 12:32:06,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-21 12:32:06,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:06,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540276666] [2020-09-21 12:32:06,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:06,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:06,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823977606] [2020-09-21 12:32:06,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:06,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:06,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:06,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:06,635 INFO L87 Difference]: Start difference. First operand 441 states and 633 transitions. Second operand 5 states. [2020-09-21 12:32:07,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:07,544 INFO L93 Difference]: Finished difference Result 904 states and 1302 transitions. [2020-09-21 12:32:07,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:07,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-09-21 12:32:07,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:07,548 INFO L225 Difference]: With dead ends: 904 [2020-09-21 12:32:07,549 INFO L226 Difference]: Without dead ends: 447 [2020-09-21 12:32:07,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:07,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-09-21 12:32:07,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 441. [2020-09-21 12:32:07,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-09-21 12:32:07,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 630 transitions. [2020-09-21 12:32:07,576 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 630 transitions. Word has length 172 [2020-09-21 12:32:07,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:07,576 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 630 transitions. [2020-09-21 12:32:07,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:07,577 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 630 transitions. [2020-09-21 12:32:07,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-21 12:32:07,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:07,581 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:07,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:32:07,581 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:07,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:07,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1926833463, now seen corresponding path program 1 times [2020-09-21 12:32:07,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:07,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477025815] [2020-09-21 12:32:07,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:07,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:07,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:08,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:08,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:08,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-21 12:32:08,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:08,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:32:08,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:08,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:08,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-09-21 12:32:08,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 12:32:08,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:08,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:08,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:08,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:08,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:08,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:08,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:08,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:08,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:08,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:08,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:08,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:08,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:08,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:08,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:08,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-21 12:32:08,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:08,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-21 12:32:08,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:08,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:08,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:08,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-21 12:32:08,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:08,946 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:08,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477025815] [2020-09-21 12:32:08,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:08,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:08,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441082606] [2020-09-21 12:32:08,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:08,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:08,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:08,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:08,948 INFO L87 Difference]: Start difference. First operand 441 states and 630 transitions. Second operand 5 states. [2020-09-21 12:32:09,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:09,784 INFO L93 Difference]: Finished difference Result 896 states and 1288 transitions. [2020-09-21 12:32:09,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:09,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-09-21 12:32:09,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:09,789 INFO L225 Difference]: With dead ends: 896 [2020-09-21 12:32:09,789 INFO L226 Difference]: Without dead ends: 447 [2020-09-21 12:32:09,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:09,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-09-21 12:32:09,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 441. [2020-09-21 12:32:09,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-09-21 12:32:09,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 627 transitions. [2020-09-21 12:32:09,805 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 627 transitions. Word has length 174 [2020-09-21 12:32:09,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:09,805 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 627 transitions. [2020-09-21 12:32:09,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:09,806 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 627 transitions. [2020-09-21 12:32:09,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-21 12:32:09,808 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:09,808 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:09,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:32:09,809 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:09,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:09,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1293398250, now seen corresponding path program 1 times [2020-09-21 12:32:09,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:09,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597819699] [2020-09-21 12:32:09,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:09,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:09,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:10,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:10,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-21 12:32:10,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:10,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-21 12:32:10,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-21 12:32:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:32:10,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:11,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:11,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:11,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:11,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:11,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:11,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:11,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:11,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:11,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:11,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:11,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:11,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:11,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:11,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:11,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-21 12:32:11,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:11,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-21 12:32:11,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:11,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:11,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:11,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-21 12:32:11,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:11,294 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:11,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597819699] [2020-09-21 12:32:11,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:11,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:11,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467549425] [2020-09-21 12:32:11,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:11,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:11,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:11,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:11,297 INFO L87 Difference]: Start difference. First operand 441 states and 627 transitions. Second operand 5 states. [2020-09-21 12:32:12,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:12,129 INFO L93 Difference]: Finished difference Result 903 states and 1289 transitions. [2020-09-21 12:32:12,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:12,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-21 12:32:12,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:12,133 INFO L225 Difference]: With dead ends: 903 [2020-09-21 12:32:12,133 INFO L226 Difference]: Without dead ends: 447 [2020-09-21 12:32:12,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:12,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-09-21 12:32:12,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 441. [2020-09-21 12:32:12,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-09-21 12:32:12,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 624 transitions. [2020-09-21 12:32:12,148 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 624 transitions. Word has length 191 [2020-09-21 12:32:12,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:12,149 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 624 transitions. [2020-09-21 12:32:12,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:12,149 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 624 transitions. [2020-09-21 12:32:12,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-21 12:32:12,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:12,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:12,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:32:12,153 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:12,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:12,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1155198251, now seen corresponding path program 1 times [2020-09-21 12:32:12,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:12,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043237862] [2020-09-21 12:32:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:12,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:12,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:12,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:13,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:13,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-21 12:32:13,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:13,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-21 12:32:13,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:13,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:32:13,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:32:13,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-21 12:32:13,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:13,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:13,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:13,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:13,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:13,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:13,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:32:13,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:13,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:13,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:13,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:32:13,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:13,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:13,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:13,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:13,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-21 12:32:13,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:13,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-21 12:32:13,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-21 12:32:13,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:13,694 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:13,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043237862] [2020-09-21 12:32:13,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:13,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:32:13,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140984701] [2020-09-21 12:32:13,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:13,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:13,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:13,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:13,698 INFO L87 Difference]: Start difference. First operand 441 states and 624 transitions. Second operand 7 states. [2020-09-21 12:32:15,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:15,289 INFO L93 Difference]: Finished difference Result 1337 states and 1930 transitions. [2020-09-21 12:32:15,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:32:15,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-09-21 12:32:15,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:15,295 INFO L225 Difference]: With dead ends: 1337 [2020-09-21 12:32:15,295 INFO L226 Difference]: Without dead ends: 902 [2020-09-21 12:32:15,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:32:15,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2020-09-21 12:32:15,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 888. [2020-09-21 12:32:15,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-09-21 12:32:15,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1137 transitions. [2020-09-21 12:32:15,323 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1137 transitions. Word has length 196 [2020-09-21 12:32:15,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:15,323 INFO L479 AbstractCegarLoop]: Abstraction has 888 states and 1137 transitions. [2020-09-21 12:32:15,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:15,324 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1137 transitions. [2020-09-21 12:32:15,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-09-21 12:32:15,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:15,328 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-21 12:32:15,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:32:15,329 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:15,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:15,329 INFO L82 PathProgramCache]: Analyzing trace with hash 2082804281, now seen corresponding path program 1 times [2020-09-21 12:32:15,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:15,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669194972] [2020-09-21 12:32:15,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:15,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:15,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:15,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:16,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:16,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-09-21 12:32:16,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:16,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-09-21 12:32:16,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:16,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:16,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-21 12:32:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-21 12:32:16,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:16,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:16,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:16,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:16,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:16,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:16,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:16,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:16,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:16,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:16,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:16,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:16,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:16,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:16,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:32:16,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:16,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 12:32:16,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:16,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:16,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:16,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-21 12:32:16,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:16,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 12:32:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:16,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:16,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:16,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-21 12:32:16,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:16,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-21 12:32:16,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-21 12:32:16,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:32:17,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669194972] [2020-09-21 12:32:17,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:17,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:32:17,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083560456] [2020-09-21 12:32:17,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:32:17,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:17,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:32:17,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:32:17,074 INFO L87 Difference]: Start difference. First operand 888 states and 1137 transitions. Second operand 8 states. [2020-09-21 12:32:19,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:19,317 INFO L93 Difference]: Finished difference Result 2076 states and 2733 transitions. [2020-09-21 12:32:19,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:32:19,318 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 266 [2020-09-21 12:32:19,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:19,326 INFO L225 Difference]: With dead ends: 2076 [2020-09-21 12:32:19,326 INFO L226 Difference]: Without dead ends: 1194 [2020-09-21 12:32:19,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:32:19,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-09-21 12:32:19,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1041. [2020-09-21 12:32:19,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2020-09-21 12:32:19,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1331 transitions. [2020-09-21 12:32:19,365 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1331 transitions. Word has length 266 [2020-09-21 12:32:19,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:19,366 INFO L479 AbstractCegarLoop]: Abstraction has 1041 states and 1331 transitions. [2020-09-21 12:32:19,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:32:19,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1331 transitions. [2020-09-21 12:32:19,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-09-21 12:32:19,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:19,373 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-09-21 12:32:19,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:32:19,374 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:19,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:19,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1556964613, now seen corresponding path program 1 times [2020-09-21 12:32:19,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:19,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192685499] [2020-09-21 12:32:19,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:19,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:19,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:20,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:20,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-09-21 12:32:20,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:20,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-09-21 12:32:20,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:20,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:20,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-09-21 12:32:20,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-21 12:32:20,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:20,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:20,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:20,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:20,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:20,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:20,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:20,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:20,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:20,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:20,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:20,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:20,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:20,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:20,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:20,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-21 12:32:20,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:20,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 12:32:20,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:20,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:20,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:20,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:20,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:20,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-21 12:32:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:20,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:20,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:20,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:32:20,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:20,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:32:20,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:20,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:20,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:20,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-21 12:32:20,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:20,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-09-21 12:32:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:20,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:20,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:20,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-21 12:32:20,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:20,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-21 12:32:20,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:20,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:20,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:20,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-21 12:32:20,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:21,141 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 330 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-21 12:32:21,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192685499] [2020-09-21 12:32:21,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:21,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:21,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069790110] [2020-09-21 12:32:21,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:21,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:21,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:21,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:21,144 INFO L87 Difference]: Start difference. First operand 1041 states and 1331 transitions. Second operand 7 states. [2020-09-21 12:32:22,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:22,961 INFO L93 Difference]: Finished difference Result 2122 states and 2810 transitions. [2020-09-21 12:32:22,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:32:22,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 364 [2020-09-21 12:32:22,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:22,968 INFO L225 Difference]: With dead ends: 2122 [2020-09-21 12:32:22,969 INFO L226 Difference]: Without dead ends: 1087 [2020-09-21 12:32:22,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:32:22,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2020-09-21 12:32:23,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 898. [2020-09-21 12:32:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-09-21 12:32:23,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1087 transitions. [2020-09-21 12:32:23,004 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1087 transitions. Word has length 364 [2020-09-21 12:32:23,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:23,005 INFO L479 AbstractCegarLoop]: Abstraction has 898 states and 1087 transitions. [2020-09-21 12:32:23,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:23,005 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1087 transitions. [2020-09-21 12:32:23,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-09-21 12:32:23,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:23,009 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-09-21 12:32:23,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:32:23,010 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:23,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:23,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1320552781, now seen corresponding path program 1 times [2020-09-21 12:32:23,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:23,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869592465] [2020-09-21 12:32:23,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:23,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:23,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:23,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:24,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:24,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-09-21 12:32:24,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:24,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:32:24,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:24,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:24,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-09-21 12:32:24,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-21 12:32:24,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:24,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:24,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:24,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:24,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:24,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:24,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:24,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:24,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:24,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:24,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:24,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:24,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-21 12:32:24,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:24,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 12:32:24,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:24,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:24,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-21 12:32:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:24,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:24,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:24,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:32:24,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:24,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 12:32:24,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:24,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:24,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:24,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-21 12:32:24,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:24,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-09-21 12:32:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:24,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:24,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:24,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-21 12:32:24,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:24,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-21 12:32:24,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:24,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:24,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:24,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-21 12:32:24,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:24,785 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 330 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-21 12:32:24,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869592465] [2020-09-21 12:32:24,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:24,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:24,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575435320] [2020-09-21 12:32:24,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:24,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:24,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:24,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:24,788 INFO L87 Difference]: Start difference. First operand 898 states and 1087 transitions. Second operand 7 states. [2020-09-21 12:32:26,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:26,679 INFO L93 Difference]: Finished difference Result 2410 states and 3052 transitions. [2020-09-21 12:32:26,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:32:26,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 368 [2020-09-21 12:32:26,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:26,688 INFO L225 Difference]: With dead ends: 2410 [2020-09-21 12:32:26,688 INFO L226 Difference]: Without dead ends: 1518 [2020-09-21 12:32:26,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:32:26,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2020-09-21 12:32:26,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1494. [2020-09-21 12:32:26,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-09-21 12:32:26,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1797 transitions. [2020-09-21 12:32:26,738 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1797 transitions. Word has length 368 [2020-09-21 12:32:26,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:26,739 INFO L479 AbstractCegarLoop]: Abstraction has 1494 states and 1797 transitions. [2020-09-21 12:32:26,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:26,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1797 transitions. [2020-09-21 12:32:26,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2020-09-21 12:32:26,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:26,746 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:26,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 12:32:26,746 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:26,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:26,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1457650150, now seen corresponding path program 1 times [2020-09-21 12:32:26,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:26,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868120299] [2020-09-21 12:32:26,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:26,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:27,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:27,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:27,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-09-21 12:32:27,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:27,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-21 12:32:27,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-09-21 12:32:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-21 12:32:27,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:27,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:27,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:27,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:27,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:27,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:27,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:32:27,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:27,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:27,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:27,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:27,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:27,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:28,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:28,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:28,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-21 12:32:28,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:28,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:32:28,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:28,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:28,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:28,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:28,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:28,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-21 12:32:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:28,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:28,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:28,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-21 12:32:28,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:28,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-21 12:32:28,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:28,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:28,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:28,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-21 12:32:28,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:28,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-09-21 12:32:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:28,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:28,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:28,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-21 12:32:28,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:28,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-21 12:32:28,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:28,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:28,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:28,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-21 12:32:28,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 343 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-21 12:32:28,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868120299] [2020-09-21 12:32:28,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:28,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:28,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124455436] [2020-09-21 12:32:28,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:28,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:28,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:28,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:28,508 INFO L87 Difference]: Start difference. First operand 1494 states and 1797 transitions. Second operand 7 states. [2020-09-21 12:32:30,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:30,550 INFO L93 Difference]: Finished difference Result 3427 states and 4183 transitions. [2020-09-21 12:32:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:32:30,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 381 [2020-09-21 12:32:30,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:30,562 INFO L225 Difference]: With dead ends: 3427 [2020-09-21 12:32:30,562 INFO L226 Difference]: Without dead ends: 1939 [2020-09-21 12:32:30,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:32:30,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2020-09-21 12:32:30,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1788. [2020-09-21 12:32:30,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1788 states. [2020-09-21 12:32:30,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2196 transitions. [2020-09-21 12:32:30,615 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2196 transitions. Word has length 381 [2020-09-21 12:32:30,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:30,616 INFO L479 AbstractCegarLoop]: Abstraction has 1788 states and 2196 transitions. [2020-09-21 12:32:30,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:30,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2196 transitions. [2020-09-21 12:32:30,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-09-21 12:32:30,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:30,622 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:30,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 12:32:30,623 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:30,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:30,623 INFO L82 PathProgramCache]: Analyzing trace with hash 466916981, now seen corresponding path program 1 times [2020-09-21 12:32:30,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:30,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508245857] [2020-09-21 12:32:30,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:30,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:30,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:31,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:31,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 435 [2020-09-21 12:32:31,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:31,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-09-21 12:32:31,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:31,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:31,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 380 [2020-09-21 12:32:31,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-21 12:32:31,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:31,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:31,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:31,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:31,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:31,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:31,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:32:31,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:31,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:31,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:31,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:31,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:31,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:31,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:31,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:31,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-21 12:32:31,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:31,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:32:31,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:31,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:31,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:31,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:31,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:31,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-21 12:32:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:31,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:32,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:32,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-21 12:32:32,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:32,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 12:32:32,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:32,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:32,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:32,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:32,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:32,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-09-21 12:32:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:32,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:32,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:32,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-21 12:32:32,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:32,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-21 12:32:32,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:32,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-21 12:32:32,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 147 proven. 3 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2020-09-21 12:32:32,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508245857] [2020-09-21 12:32:32,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:32,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:32,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964973343] [2020-09-21 12:32:32,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:32,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:32,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:32,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:32,249 INFO L87 Difference]: Start difference. First operand 1788 states and 2196 transitions. Second operand 5 states. [2020-09-21 12:32:33,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:33,591 INFO L93 Difference]: Finished difference Result 3719 states and 4585 transitions. [2020-09-21 12:32:33,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:33,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 420 [2020-09-21 12:32:33,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:33,592 INFO L225 Difference]: With dead ends: 3719 [2020-09-21 12:32:33,593 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:32:33,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:33,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:32:33,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:32:33,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:32:33,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:32:33,602 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 420 [2020-09-21 12:32:33,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:33,602 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:32:33,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:33,602 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:32:33,602 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:32:33,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 12:32:33,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 12:32:34,545 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 108 [2020-09-21 12:32:35,046 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 108 [2020-09-21 12:32:35,508 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 47 [2020-09-21 12:32:35,768 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 35