/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --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/Problem01_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:00:17,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:00:17,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:00:17,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:00:17,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:00:17,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:00:17,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:00:17,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:00:17,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:00:17,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:00:17,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:00:17,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:00:17,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:00:17,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:00:17,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:00:17,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:00:17,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:00:17,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:00:17,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:00:17,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:00:17,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:00:17,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:00:17,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:00:17,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:00:17,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:00:17,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:00:17,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:00:17,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:00:17,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:00:17,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:00:17,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:00:17,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:00:17,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:00:17,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:00:17,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:00:17,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:00:17,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:00:17,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:00:17,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:00:17,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:00:17,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:00:17,456 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 [2020-09-25 01:00:17,501 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:00:17,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:00:17,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:00:17,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:00:17,504 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:00:17,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:00:17,505 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:00:17,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:00:17,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:00:17,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:00:17,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:00:17,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:00:17,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:00:17,507 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:00:17,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:00:17,508 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:00:17,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:00:17,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:00:17,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:00:17,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:00:17,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:00:17,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:00:17,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:00:17,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:00:17,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:00:17,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:00:17,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:00:17,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:00:17,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:00:17,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;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=5000;interpolation-heuristic=DEEPEST;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=5000;interpolation-heuristic=DEEPEST;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=5000;interpolation-heuristic=DEEPEST;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=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 01:00:17,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:00:18,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:00:18,013 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:00:18,015 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:00:18,016 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:00:18,017 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-09-25 01:00:18,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcee3b8fc/52df02f7c69949b392b651499fc139bf/FLAG9b7467f13 [2020-09-25 01:00:18,736 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:00:18,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-09-25 01:00:18,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcee3b8fc/52df02f7c69949b392b651499fc139bf/FLAG9b7467f13 [2020-09-25 01:00:18,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcee3b8fc/52df02f7c69949b392b651499fc139bf [2020-09-25 01:00:18,964 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:00:18,970 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:00:18,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:00:18,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:00:18,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:00:18,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:00:18" (1/1) ... [2020-09-25 01:00:18,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112bbb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:18, skipping insertion in model container [2020-09-25 01:00:18,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:00:18" (1/1) ... [2020-09-25 01:00:18,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:00:19,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:00:19,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:00:19,484 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:00:19,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:00:19,727 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:00:19,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:19 WrapperNode [2020-09-25 01:00:19,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:00:19,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:00:19,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:00:19,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:00:19,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:19" (1/1) ... [2020-09-25 01:00:19,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:19" (1/1) ... [2020-09-25 01:00:19,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:19" (1/1) ... [2020-09-25 01:00:19,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:19" (1/1) ... [2020-09-25 01:00:19,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:19" (1/1) ... [2020-09-25 01:00:19,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:19" (1/1) ... [2020-09-25 01:00:19,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:19" (1/1) ... [2020-09-25 01:00:19,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:00:19,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:00:19,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:00:19,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:00:19,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:19" (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 [2020-09-25 01:00:20,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:00:20,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:00:20,009 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 01:00:20,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:00:20,009 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 01:00:20,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:00:20,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:00:20,010 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 01:00:20,010 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:00:20,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:00:20,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:00:21,372 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:00:21,372 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 01:00:21,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:00:21 BoogieIcfgContainer [2020-09-25 01:00:21,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:00:21,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:00:21,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:00:21,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:00:21,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:00:18" (1/3) ... [2020-09-25 01:00:21,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad18132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:00:21, skipping insertion in model container [2020-09-25 01:00:21,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:00:19" (2/3) ... [2020-09-25 01:00:21,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad18132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:00:21, skipping insertion in model container [2020-09-25 01:00:21,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:00:21" (3/3) ... [2020-09-25 01:00:21,402 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label38.c [2020-09-25 01:00:21,415 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:00:21,432 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:00:21,455 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:00:21,502 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:00:21,503 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:00:21,503 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:00:21,504 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:00:21,504 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:00:21,504 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:00:21,504 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:00:21,504 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:00:21,550 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 01:00:21,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-25 01:00:21,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:00:21,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:00:21,601 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:00:21,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:00:21,612 INFO L82 PathProgramCache]: Analyzing trace with hash -857113145, now seen corresponding path program 1 times [2020-09-25 01:00:21,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:00:21,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002017105] [2020-09-25 01:00:21,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:00:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:22,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:22,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:23,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:24,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:24,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:24,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:25,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:27,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:27,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 01:00:27,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 01:00:27,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 01:00:27,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:00:27,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 01:00:27,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 01:00:27,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:00:27,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:00:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:27,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:27,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:27,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:00:27,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:00:27,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 01:00:27,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:00:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:00:27,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 01:00:27,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:00:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:00:27,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002017105] [2020-09-25 01:00:27,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:00:27,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:00:27,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887394959] [2020-09-25 01:00:27,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:00:27,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:00:27,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:00:27,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:00:27,467 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 01:00:29,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:00:29,641 INFO L93 Difference]: Finished difference Result 1231 states and 1630 transitions. [2020-09-25 01:00:29,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:00:29,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-09-25 01:00:29,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:00:29,682 INFO L225 Difference]: With dead ends: 1231 [2020-09-25 01:00:29,682 INFO L226 Difference]: Without dead ends: 657 [2020-09-25 01:00:29,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:00:29,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-09-25 01:00:29,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 603. [2020-09-25 01:00:29,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 01:00:29,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 707 transitions. [2020-09-25 01:00:29,797 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 707 transitions. Word has length 110 [2020-09-25 01:00:29,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:00:29,798 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 707 transitions. [2020-09-25 01:00:29,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:00:29,798 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 707 transitions. [2020-09-25 01:00:29,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 01:00:29,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:00:29,811 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:00:29,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:00:29,812 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:00:29,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:00:29,813 INFO L82 PathProgramCache]: Analyzing trace with hash 703741270, now seen corresponding path program 1 times [2020-09-25 01:00:29,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:00:29,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050144067] [2020-09-25 01:00:29,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:00:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:29,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:30,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:30,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:31,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:31,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 01:00:31,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:00:31,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1440 [2020-09-25 01:00:31,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:00:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 01:00:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 01:00:31,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:00:31,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:00:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:31,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:31,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:31,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:00:31,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:00:31,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 01:00:31,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:31,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:00:31,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:00:31,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:00:31,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:00:31,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 01:00:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:31,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:31,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:31,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 01:00:31,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:00:31,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 01:00:31,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:00:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:00:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:00:31,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:00:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:00:31,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050144067] [2020-09-25 01:00:31,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:00:31,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 01:00:31,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940778154] [2020-09-25 01:00:31,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:00:31,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:00:31,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:00:31,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:00:31,642 INFO L87 Difference]: Start difference. First operand 603 states and 707 transitions. Second operand 5 states. [2020-09-25 01:00:33,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:00:33,894 INFO L93 Difference]: Finished difference Result 1499 states and 1830 transitions. [2020-09-25 01:00:33,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:00:33,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-09-25 01:00:33,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:00:33,901 INFO L225 Difference]: With dead ends: 1499 [2020-09-25 01:00:33,901 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 01:00:33,904 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 [2020-09-25 01:00:33,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 01:00:33,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 891. [2020-09-25 01:00:33,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 01:00:33,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1042 transitions. [2020-09-25 01:00:33,947 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1042 transitions. Word has length 131 [2020-09-25 01:00:33,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:00:33,948 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1042 transitions. [2020-09-25 01:00:33,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:00:33,949 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1042 transitions. [2020-09-25 01:00:33,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 01:00:33,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:00:33,953 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:00:33,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:00:33,953 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:00:33,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:00:33,954 INFO L82 PathProgramCache]: Analyzing trace with hash 772380757, now seen corresponding path program 1 times [2020-09-25 01:00:33,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:00:33,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60609624] [2020-09-25 01:00:33,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:00:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:33,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:34,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:34,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:34,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:34,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:34,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:34,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:35,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:36,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:36,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:37,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:38,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:38,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:39,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:39,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 01:00:39,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 01:00:39,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 01:00:39,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:00:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 01:00:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 01:00:39,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:00:39,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:00:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:39,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:39,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:39,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:00:39,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:00:39,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:00:39,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:39,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:00:39,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:00:39,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:00:39,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:00:39,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 01:00:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:39,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:39,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:39,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 01:00:39,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:00:39,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 01:00:39,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:00:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:00:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:00:39,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:00:39,272 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:00:39,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60609624] [2020-09-25 01:00:39,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:00:39,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 01:00:39,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476080018] [2020-09-25 01:00:39,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:00:39,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:00:39,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:00:39,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:00:39,277 INFO L87 Difference]: Start difference. First operand 891 states and 1042 transitions. Second operand 5 states. [2020-09-25 01:00:41,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:00:41,253 INFO L93 Difference]: Finished difference Result 2363 states and 2850 transitions. [2020-09-25 01:00:41,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:00:41,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 01:00:41,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:00:41,266 INFO L225 Difference]: With dead ends: 2363 [2020-09-25 01:00:41,266 INFO L226 Difference]: Without dead ends: 1348 [2020-09-25 01:00:41,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:00:41,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2020-09-25 01:00:41,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1313. [2020-09-25 01:00:41,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1313 states. [2020-09-25 01:00:41,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1553 transitions. [2020-09-25 01:00:41,317 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1553 transitions. Word has length 132 [2020-09-25 01:00:41,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:00:41,317 INFO L479 AbstractCegarLoop]: Abstraction has 1313 states and 1553 transitions. [2020-09-25 01:00:41,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:00:41,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1553 transitions. [2020-09-25 01:00:41,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 01:00:41,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:00:41,323 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:00:41,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:00:41,323 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:00:41,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:00:41,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1530455168, now seen corresponding path program 1 times [2020-09-25 01:00:41,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:00:41,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135735023] [2020-09-25 01:00:41,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:00:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:41,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:41,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:41,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:41,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:41,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:42,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:45,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:45,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:45,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:46,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:46,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 01:00:46,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 01:00:46,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 01:00:46,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:46,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:00:46,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 01:00:46,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 01:00:46,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:00:46,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:00:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:46,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:46,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:46,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:00:46,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:00:46,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 01:00:46,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:46,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:00:46,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:00:46,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:00:46,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:00:46,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 01:00:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:46,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:46,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:46,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 01:00:46,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:00:46,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:00:46,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:46,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:00:46,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:00:46,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:00:46,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:00:46,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 01:00:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:46,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:46,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:46,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 01:00:46,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:00:46,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 01:00:46,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:46,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:00:46,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:00:46,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 01:00:46,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:00:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 01:00:46,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135735023] [2020-09-25 01:00:46,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:00:46,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 01:00:46,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905898111] [2020-09-25 01:00:46,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:00:46,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:00:46,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:00:46,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:00:46,701 INFO L87 Difference]: Start difference. First operand 1313 states and 1553 transitions. Second operand 5 states. [2020-09-25 01:00:48,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:00:48,624 INFO L93 Difference]: Finished difference Result 3408 states and 4154 transitions. [2020-09-25 01:00:48,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:00:48,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 01:00:48,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:00:48,639 INFO L225 Difference]: With dead ends: 3408 [2020-09-25 01:00:48,639 INFO L226 Difference]: Without dead ends: 2119 [2020-09-25 01:00:48,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:00:48,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2119 states. [2020-09-25 01:00:48,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2119 to 1744. [2020-09-25 01:00:48,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1744 states. [2020-09-25 01:00:48,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 2122 transitions. [2020-09-25 01:00:48,741 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 2122 transitions. Word has length 156 [2020-09-25 01:00:48,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:00:48,742 INFO L479 AbstractCegarLoop]: Abstraction has 1744 states and 2122 transitions. [2020-09-25 01:00:48,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:00:48,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 2122 transitions. [2020-09-25 01:00:48,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 01:00:48,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:00:48,751 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:00:48,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:00:48,752 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:00:48,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:00:48,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1020396383, now seen corresponding path program 1 times [2020-09-25 01:00:48,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:00:48,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467478165] [2020-09-25 01:00:48,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:00:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:48,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:48,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:49,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:49,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:49,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:49,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:52,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:53,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:53,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 01:00:53,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 01:00:53,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 01:00:53,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:53,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:00:53,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-25 01:00:53,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 01:00:53,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:00:53,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:00:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:53,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:53,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:53,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:00:53,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:00:53,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:00:53,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:00:53,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:00:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:00:53,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:00:53,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 01:00:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:53,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:53,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:53,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 01:00:53,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:00:53,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:00:53,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:53,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:00:53,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:00:53,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:00:53,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:00:53,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 01:00:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:53,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:54,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:00:54,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 01:00:54,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:00:54,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 01:00:54,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:00:54,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:00:54,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:00:54,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 01:00:54,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:00:54,086 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 01:00:54,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467478165] [2020-09-25 01:00:54,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:00:54,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 01:00:54,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443862885] [2020-09-25 01:00:54,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:00:54,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:00:54,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:00:54,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:00:54,089 INFO L87 Difference]: Start difference. First operand 1744 states and 2122 transitions. Second operand 5 states. [2020-09-25 01:00:56,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:00:56,077 INFO L93 Difference]: Finished difference Result 4071 states and 5065 transitions. [2020-09-25 01:00:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:00:56,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 01:00:56,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:00:56,096 INFO L225 Difference]: With dead ends: 4071 [2020-09-25 01:00:56,096 INFO L226 Difference]: Without dead ends: 2187 [2020-09-25 01:00:56,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:00:56,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2020-09-25 01:00:56,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 1736. [2020-09-25 01:00:56,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1736 states. [2020-09-25 01:00:56,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 2097 transitions. [2020-09-25 01:00:56,179 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 2097 transitions. Word has length 161 [2020-09-25 01:00:56,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:00:56,180 INFO L479 AbstractCegarLoop]: Abstraction has 1736 states and 2097 transitions. [2020-09-25 01:00:56,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:00:56,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 2097 transitions. [2020-09-25 01:00:56,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 01:00:56,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:00:56,189 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:00:56,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:00:56,190 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:00:56,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:00:56,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1319899365, now seen corresponding path program 1 times [2020-09-25 01:00:56,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:00:56,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563145802] [2020-09-25 01:00:56,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:00:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:00:56,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:56,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:56,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:56,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:56,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:00:56,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:01,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:01:01,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 01:01:01,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 01:01:01,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 01:01:01,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:01:01,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:01:01,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 01:01:01,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 01:01:01,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:01:01,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:01:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:01:01,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:01,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:01:01,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:01:01,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:01:01,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:01:01,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:01:01,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:01:01,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:01:01,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:01:01,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:01:01,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 01:01:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:01:01,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:01,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:01:01,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 01:01:01,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:01:01,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 01:01:01,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:01:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:01:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:01:01,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:01:01,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:01:01,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 01:01:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:01:01,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:01,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:01:01,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 01:01:01,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:01:01,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 01:01:01,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:01:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:01:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 01:01:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 01:01:01,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:01:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 01:01:01,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563145802] [2020-09-25 01:01:01,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:01:01,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 01:01:01,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700077396] [2020-09-25 01:01:01,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 01:01:01,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:01:01,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 01:01:01,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:01:01,952 INFO L87 Difference]: Start difference. First operand 1736 states and 2097 transitions. Second operand 7 states. [2020-09-25 01:01:05,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:01:05,071 INFO L93 Difference]: Finished difference Result 4114 states and 5206 transitions. [2020-09-25 01:01:05,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 01:01:05,072 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-09-25 01:01:05,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:01:05,087 INFO L225 Difference]: With dead ends: 4114 [2020-09-25 01:01:05,087 INFO L226 Difference]: Without dead ends: 2190 [2020-09-25 01:01:05,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 01:01:05,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2020-09-25 01:01:05,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 1850. [2020-09-25 01:01:05,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1850 states. [2020-09-25 01:01:05,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 2171 transitions. [2020-09-25 01:01:05,169 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 2171 transitions. Word has length 197 [2020-09-25 01:01:05,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:01:05,170 INFO L479 AbstractCegarLoop]: Abstraction has 1850 states and 2171 transitions. [2020-09-25 01:01:05,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 01:01:05,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 2171 transitions. [2020-09-25 01:01:05,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 01:01:05,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:01:05,179 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:01:05,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 01:01:05,179 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:01:05,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:01:05,180 INFO L82 PathProgramCache]: Analyzing trace with hash -350239711, now seen corresponding path program 1 times [2020-09-25 01:01:05,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:01:05,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455486299] [2020-09-25 01:01:05,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:01:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:01:05,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:05,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:05,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:05,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:06,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:06,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:06,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking...