/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:08:36,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:08:36,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:08:36,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:08:36,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:08:36,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:08:36,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:08:36,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:08:36,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:08:36,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:08:36,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:08:36,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:08:36,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:08:36,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:08:36,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:08:36,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:08:36,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:08:36,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:08:36,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:08:36,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:08:36,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:08:36,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:08:36,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:08:36,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:08:36,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:08:36,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:08:36,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:08:36,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:08:36,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:08:36,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:08:36,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:08:36,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:08:36,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:08:36,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:08:36,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:08:36,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:08:36,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:08:36,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:08:36,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:08:36,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:08:36,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:08:36,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:08:36,585 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:08:36,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:08:36,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:08:36,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:08:36,588 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:08:36,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:08:36,589 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:08:36,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:08:36,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:08:36,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:08:36,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:08:36,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:08:36,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:08:36,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:08:36,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:08:36,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:08:36,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:08:36,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:08:36,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:08:36,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:08:36,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:08:36,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:08:36,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:08:36,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:08:36,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:08:36,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:08:36,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:08:36,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:08:36,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:08:36,596 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:08:36,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:08:36,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:08:36,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:08:36,957 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:08:36,958 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:08:36,959 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label46.c [2020-10-13 09:08:37,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d5553fe1/96b246a25bb04435b6c69a472b7ed3bf/FLAG94bab063a [2020-10-13 09:08:37,792 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:08:37,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label46.c [2020-10-13 09:08:37,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d5553fe1/96b246a25bb04435b6c69a472b7ed3bf/FLAG94bab063a [2020-10-13 09:08:37,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d5553fe1/96b246a25bb04435b6c69a472b7ed3bf [2020-10-13 09:08:37,958 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:08:37,960 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:08:37,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:08:37,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:08:37,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:08:37,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:08:37" (1/1) ... [2020-10-13 09:08:37,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50be01d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:37, skipping insertion in model container [2020-10-13 09:08:37,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:08:37" (1/1) ... [2020-10-13 09:08:37,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:08:38,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:08:38,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:08:38,997 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:08:39,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:08:39,317 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:08:39,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:39 WrapperNode [2020-10-13 09:08:39,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:08:39,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:08:39,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:08:39,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:08:39,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:39" (1/1) ... [2020-10-13 09:08:39,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:39" (1/1) ... [2020-10-13 09:08:39,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:39" (1/1) ... [2020-10-13 09:08:39,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:39" (1/1) ... [2020-10-13 09:08:39,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:39" (1/1) ... [2020-10-13 09:08:39,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:39" (1/1) ... [2020-10-13 09:08:39,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:39" (1/1) ... [2020-10-13 09:08:39,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:08:39,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:08:39,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:08:39,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:08:39,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:08:39,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:08:39,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:08:39,670 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:08:39,670 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:08:39,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:08:39,670 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:08:39,671 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:08:39,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:08:39,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:08:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:08:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:08:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:08:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:08:46,373 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:08:46,373 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:08:46,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:08:46 BoogieIcfgContainer [2020-10-13 09:08:46,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:08:46,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:08:46,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:08:46,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:08:46,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:08:37" (1/3) ... [2020-10-13 09:08:46,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ca6527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:08:46, skipping insertion in model container [2020-10-13 09:08:46,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:39" (2/3) ... [2020-10-13 09:08:46,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ca6527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:08:46, skipping insertion in model container [2020-10-13 09:08:46,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:08:46" (3/3) ... [2020-10-13 09:08:46,403 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label46.c [2020-10-13 09:08:46,419 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:08:46,440 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:08:46,466 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:08:46,520 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:08:46,520 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:08:46,520 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:08:46,521 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:08:46,521 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:08:46,521 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:08:46,522 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:08:46,522 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:08:46,581 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 09:08:46,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 09:08:46,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:08:46,603 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] [2020-10-13 09:08:46,604 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:08:46,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:08:46,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1454310861, now seen corresponding path program 1 times [2020-10-13 09:08:46,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:08:46,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376766774] [2020-10-13 09:08:46,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:08:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:47,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:47,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:47,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 09:08:47,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:47,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-13 09:08:47,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:47,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:08:47,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:08:47,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 09:08:47,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:08:47,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:08:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:47,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:47,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:47,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:08:47,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:47,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:08:47,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:47,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:08:47,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:47,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:08:47,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:08:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:08:47,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376766774] [2020-10-13 09:08:47,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:08:47,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:08:47,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292465051] [2020-10-13 09:08:47,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:08:47,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:08:47,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:08:47,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:08:47,720 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 09:08:56,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:08:56,621 INFO L93 Difference]: Finished difference Result 1224 states and 2200 transitions. [2020-10-13 09:08:56,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:08:56,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-10-13 09:08:56,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:08:56,648 INFO L225 Difference]: With dead ends: 1224 [2020-10-13 09:08:56,648 INFO L226 Difference]: Without dead ends: 708 [2020-10-13 09:08:56,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:08:56,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-13 09:08:56,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 694. [2020-10-13 09:08:56,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-13 09:08:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1080 transitions. [2020-10-13 09:08:56,765 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1080 transitions. Word has length 49 [2020-10-13 09:08:56,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:08:56,766 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1080 transitions. [2020-10-13 09:08:56,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:08:56,766 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1080 transitions. [2020-10-13 09:08:56,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 09:08:56,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:08:56,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:08:56,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:08:56,773 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:08:56,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:08:56,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1121025747, now seen corresponding path program 1 times [2020-10-13 09:08:56,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:08:56,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081295342] [2020-10-13 09:08:56,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:08:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:56,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:57,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:57,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:58,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:58,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:58,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 09:08:58,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:08:58,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1393 [2020-10-13 09:08:58,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:58,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:08:58,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:08:58,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:08:58,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:08:58,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:08:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:58,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:58,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:58,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:08:58,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:58,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:08:58,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:58,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:58,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:58,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:08:58,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:08:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:58,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:58,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:58,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:08:58,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:58,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 09:08:58,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:08:58,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:58,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:08:58,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:08:58,660 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:08:58,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081295342] [2020-10-13 09:08:58,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:08:58,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:08:58,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178167137] [2020-10-13 09:08:58,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:08:58,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:08:58,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:08:58,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:08:58,665 INFO L87 Difference]: Start difference. First operand 694 states and 1080 transitions. Second operand 5 states. [2020-10-13 09:09:06,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:09:06,273 INFO L93 Difference]: Finished difference Result 1110 states and 1766 transitions. [2020-10-13 09:09:06,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:09:06,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 09:09:06,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:09:06,281 INFO L225 Difference]: With dead ends: 1110 [2020-10-13 09:09:06,281 INFO L226 Difference]: Without dead ends: 700 [2020-10-13 09:09:06,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:09:06,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-13 09:09:06,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 694. [2020-10-13 09:09:06,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-13 09:09:06,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1078 transitions. [2020-10-13 09:09:06,325 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1078 transitions. Word has length 119 [2020-10-13 09:09:06,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:09:06,326 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1078 transitions. [2020-10-13 09:09:06,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:09:06,326 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1078 transitions. [2020-10-13 09:09:06,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 09:09:06,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:09:06,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:09:06,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:09:06,332 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:09:06,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:09:06,332 INFO L82 PathProgramCache]: Analyzing trace with hash 2075542321, now seen corresponding path program 1 times [2020-10-13 09:09:06,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:09:06,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485485904] [2020-10-13 09:09:06,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:09:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:06,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:06,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:07,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:07,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:08,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:08,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 09:09:08,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:09:08,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1692 [2020-10-13 09:09:08,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:08,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:09:08,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 09:09:08,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:09:08,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:08,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:09:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:08,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:08,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:08,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:09:08,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:08,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:09:08,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:08,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:08,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:08,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:08,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:09:08,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:09:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:08,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:08,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:08,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:09:08,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:08,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 09:09:08,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:08,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:09:08,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:08,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:09:08,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:09:08,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485485904] [2020-10-13 09:09:08,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:09:08,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:09:08,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517697212] [2020-10-13 09:09:08,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:09:08,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:09:08,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:09:08,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:09:08,433 INFO L87 Difference]: Start difference. First operand 694 states and 1078 transitions. Second operand 5 states. [2020-10-13 09:09:16,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:09:16,465 INFO L93 Difference]: Finished difference Result 1093 states and 1746 transitions. [2020-10-13 09:09:16,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:09:16,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 09:09:16,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:09:16,477 INFO L225 Difference]: With dead ends: 1093 [2020-10-13 09:09:16,478 INFO L226 Difference]: Without dead ends: 700 [2020-10-13 09:09:16,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:09:16,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-13 09:09:16,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 694. [2020-10-13 09:09:16,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-13 09:09:16,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1076 transitions. [2020-10-13 09:09:16,511 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1076 transitions. Word has length 121 [2020-10-13 09:09:16,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:09:16,512 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1076 transitions. [2020-10-13 09:09:16,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:09:16,512 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1076 transitions. [2020-10-13 09:09:16,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 09:09:16,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:09:16,517 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:09:16,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:09:16,518 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:09:16,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:09:16,518 INFO L82 PathProgramCache]: Analyzing trace with hash 830199093, now seen corresponding path program 1 times [2020-10-13 09:09:16,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:09:16,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439680606] [2020-10-13 09:09:16,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:09:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:16,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:16,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:17,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:17,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:17,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 09:09:17,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:09:17,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-10-13 09:09:17,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:17,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:09:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:09:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:09:17,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:09:17,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:09:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:17,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:17,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:17,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:09:17,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:17,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:09:17,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:17,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:17,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:17,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:17,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:09:17,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:09:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:17,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:17,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:17,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:09:17,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:17,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-13 09:09:17,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:09:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:09:17,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:09:17,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439680606] [2020-10-13 09:09:17,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:09:17,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:09:17,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16378493] [2020-10-13 09:09:17,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:09:17,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:09:17,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:09:17,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:09:17,985 INFO L87 Difference]: Start difference. First operand 694 states and 1076 transitions. Second operand 5 states. [2020-10-13 09:09:24,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:09:24,015 INFO L93 Difference]: Finished difference Result 1110 states and 1760 transitions. [2020-10-13 09:09:24,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:09:24,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 09:09:24,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:09:24,023 INFO L225 Difference]: With dead ends: 1110 [2020-10-13 09:09:24,024 INFO L226 Difference]: Without dead ends: 700 [2020-10-13 09:09:24,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:09:24,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-13 09:09:24,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 694. [2020-10-13 09:09:24,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-13 09:09:24,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1074 transitions. [2020-10-13 09:09:24,051 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1074 transitions. Word has length 123 [2020-10-13 09:09:24,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:09:24,052 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1074 transitions. [2020-10-13 09:09:24,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:09:24,053 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1074 transitions. [2020-10-13 09:09:24,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 09:09:24,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:09:24,067 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:09:24,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:09:24,068 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:09:24,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:09:24,068 INFO L82 PathProgramCache]: Analyzing trace with hash -378336387, now seen corresponding path program 1 times [2020-10-13 09:09:24,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:09:24,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689738061] [2020-10-13 09:09:24,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:09:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:24,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:24,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:24,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:25,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:25,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:25,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 09:09:25,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:09:25,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1386 [2020-10-13 09:09:25,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:09:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 09:09:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:09:25,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:25,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:09:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:25,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:25,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:25,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:09:25,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:25,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:09:25,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:25,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:25,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:25,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:25,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:25,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:09:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:25,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:25,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:25,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:09:25,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:25,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 09:09:25,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:09:25,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:25,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:09:25,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:25,775 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:09:25,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689738061] [2020-10-13 09:09:25,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:09:25,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:09:25,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935685707] [2020-10-13 09:09:25,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:09:25,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:09:25,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:09:25,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:09:25,778 INFO L87 Difference]: Start difference. First operand 694 states and 1074 transitions. Second operand 5 states. [2020-10-13 09:09:32,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:09:32,875 INFO L93 Difference]: Finished difference Result 1113 states and 1761 transitions. [2020-10-13 09:09:32,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:09:32,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 09:09:32,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:09:32,891 INFO L225 Difference]: With dead ends: 1113 [2020-10-13 09:09:32,892 INFO L226 Difference]: Without dead ends: 700 [2020-10-13 09:09:32,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:09:32,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-13 09:09:32,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 694. [2020-10-13 09:09:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-13 09:09:32,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1063 transitions. [2020-10-13 09:09:32,917 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1063 transitions. Word has length 124 [2020-10-13 09:09:32,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:09:32,917 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1063 transitions. [2020-10-13 09:09:32,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:09:32,918 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1063 transitions. [2020-10-13 09:09:32,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 09:09:32,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:09:32,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:09:32,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:09:32,922 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:09:32,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:09:32,923 INFO L82 PathProgramCache]: Analyzing trace with hash 105592633, now seen corresponding path program 1 times [2020-10-13 09:09:32,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:09:32,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966475326] [2020-10-13 09:09:32,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:09:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:32,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:33,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:33,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:34,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:34,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 09:09:34,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:09:34,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1331 [2020-10-13 09:09:34,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:34,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:09:34,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 09:09:34,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:09:34,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:09:34,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:09:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:34,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:34,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:34,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:09:34,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:34,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:09:34,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:34,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:34,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:34,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:34,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:34,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:09:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:34,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:34,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:34,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:09:34,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:34,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:09:34,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:09:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:09:34,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:34,630 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:09:34,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966475326] [2020-10-13 09:09:34,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:09:34,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:09:34,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652236506] [2020-10-13 09:09:34,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:09:34,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:09:34,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:09:34,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:09:34,635 INFO L87 Difference]: Start difference. First operand 694 states and 1063 transitions. Second operand 5 states. [2020-10-13 09:09:40,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:09:40,767 INFO L93 Difference]: Finished difference Result 1089 states and 1718 transitions. [2020-10-13 09:09:40,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:09:40,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 09:09:40,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:09:40,777 INFO L225 Difference]: With dead ends: 1089 [2020-10-13 09:09:40,777 INFO L226 Difference]: Without dead ends: 700 [2020-10-13 09:09:40,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:09:40,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-13 09:09:40,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 694. [2020-10-13 09:09:40,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-13 09:09:40,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1061 transitions. [2020-10-13 09:09:40,803 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1061 transitions. Word has length 125 [2020-10-13 09:09:40,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:09:40,803 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1061 transitions. [2020-10-13 09:09:40,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:09:40,803 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1061 transitions. [2020-10-13 09:09:40,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 09:09:40,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:09:40,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:09:40,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:09:40,806 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:09:40,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:09:40,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1657312447, now seen corresponding path program 1 times [2020-10-13 09:09:40,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:09:40,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525729525] [2020-10-13 09:09:40,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:09:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:40,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:40,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:42,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:42,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 09:09:42,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:09:42,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1262 [2020-10-13 09:09:42,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:42,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:09:42,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 09:09:42,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 09:09:42,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:42,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:09:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:42,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:42,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:42,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:09:42,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:42,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:09:42,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:42,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:42,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:42,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:42,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:42,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:09:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:42,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:42,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:42,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:09:42,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:42,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 09:09:42,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:42,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:09:42,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:42,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:09:42,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:09:42,357 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:09:42,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525729525] [2020-10-13 09:09:42,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:09:42,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:09:42,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585012774] [2020-10-13 09:09:42,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:09:42,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:09:42,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:09:42,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:09:42,362 INFO L87 Difference]: Start difference. First operand 694 states and 1061 transitions. Second operand 5 states. [2020-10-13 09:09:51,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:09:51,525 INFO L93 Difference]: Finished difference Result 1394 states and 2252 transitions. [2020-10-13 09:09:51,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:09:51,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-13 09:09:51,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:09:51,532 INFO L225 Difference]: With dead ends: 1394 [2020-10-13 09:09:51,532 INFO L226 Difference]: Without dead ends: 1021 [2020-10-13 09:09:51,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:09:51,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2020-10-13 09:09:51,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 1015. [2020-10-13 09:09:51,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-13 09:09:51,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1483 transitions. [2020-10-13 09:09:51,564 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1483 transitions. Word has length 129 [2020-10-13 09:09:51,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:09:51,565 INFO L479 AbstractCegarLoop]: Abstraction has 1015 states and 1483 transitions. [2020-10-13 09:09:51,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:09:51,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1483 transitions. [2020-10-13 09:09:51,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-13 09:09:51,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:09:51,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:09:51,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:09:51,568 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:09:51,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:09:51,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1446276853, now seen corresponding path program 1 times [2020-10-13 09:09:51,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:09:51,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111547078] [2020-10-13 09:09:51,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:09:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:51,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:51,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:52,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:52,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:09:52,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:09:52,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 676 [2020-10-13 09:09:52,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:52,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:09:52,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 09:09:52,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 09:09:52,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:52,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:09:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:52,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:52,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:52,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:09:52,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:52,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:09:52,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:52,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:52,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:52,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:52,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:52,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:09:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:52,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:52,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:52,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:09:52,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:09:52,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:09:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:09:52,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:52,535 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:09:52,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111547078] [2020-10-13 09:09:52,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:09:52,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:09:52,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491011132] [2020-10-13 09:09:52,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:09:52,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:09:52,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:09:52,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:09:52,539 INFO L87 Difference]: Start difference. First operand 1015 states and 1483 transitions. Second operand 5 states. [2020-10-13 09:10:05,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:10:05,719 INFO L93 Difference]: Finished difference Result 2034 states and 3104 transitions. [2020-10-13 09:10:05,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:10:05,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-10-13 09:10:05,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:10:05,728 INFO L225 Difference]: With dead ends: 2034 [2020-10-13 09:10:05,728 INFO L226 Difference]: Without dead ends: 1340 [2020-10-13 09:10:05,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:10:05,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2020-10-13 09:10:05,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1333. [2020-10-13 09:10:05,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1333 states. [2020-10-13 09:10:05,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1862 transitions. [2020-10-13 09:10:05,771 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1862 transitions. Word has length 135 [2020-10-13 09:10:05,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:10:05,772 INFO L479 AbstractCegarLoop]: Abstraction has 1333 states and 1862 transitions. [2020-10-13 09:10:05,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:10:05,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1862 transitions. [2020-10-13 09:10:05,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-13 09:10:05,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:05,775 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:10:05,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:10:05,775 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:05,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:05,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1757129056, now seen corresponding path program 1 times [2020-10-13 09:10:05,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:05,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700177207] [2020-10-13 09:10:05,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:05,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:06,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:06,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:06,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:06,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:06,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:10:06,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:10:06,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1149 [2020-10-13 09:10:06,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:06,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:10:06,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 09:10:06,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:10:06,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:07,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:07,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:07,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:07,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:07,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:07,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:10:07,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:07,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:07,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:07,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:07,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:10:07,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:10:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:07,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:07,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:07,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:10:07,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:07,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-13 09:10:07,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:07,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 09:10:07,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:10:07,480 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:10:07,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700177207] [2020-10-13 09:10:07,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:10:07,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:10:07,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651418052] [2020-10-13 09:10:07,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:10:07,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:07,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:10:07,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:10:07,494 INFO L87 Difference]: Start difference. First operand 1333 states and 1862 transitions. Second operand 5 states. [2020-10-13 09:10:16,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:10:16,470 INFO L93 Difference]: Finished difference Result 2388 states and 3341 transitions. [2020-10-13 09:10:16,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:10:16,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-13 09:10:16,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:10:16,480 INFO L225 Difference]: With dead ends: 2388 [2020-10-13 09:10:16,481 INFO L226 Difference]: Without dead ends: 1339 [2020-10-13 09:10:16,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:10:16,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2020-10-13 09:10:16,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1333. [2020-10-13 09:10:16,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1333 states. [2020-10-13 09:10:16,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1840 transitions. [2020-10-13 09:10:16,520 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1840 transitions. Word has length 141 [2020-10-13 09:10:16,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:10:16,520 INFO L479 AbstractCegarLoop]: Abstraction has 1333 states and 1840 transitions. [2020-10-13 09:10:16,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:10:16,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1840 transitions. [2020-10-13 09:10:16,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-13 09:10:16,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:16,523 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:10:16,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:10:16,523 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:16,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:16,524 INFO L82 PathProgramCache]: Analyzing trace with hash -2138486004, now seen corresponding path program 1 times [2020-10-13 09:10:16,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:16,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873235148] [2020-10-13 09:10:16,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:16,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:16,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:16,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:17,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:17,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 09:10:17,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:10:17,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-10-13 09:10:17,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:10:17,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:10:17,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:10:17,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:17,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:17,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:17,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:17,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:17,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:17,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:10:17,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:17,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:17,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:17,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:17,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:10:17,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:10:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:17,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:17,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:17,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:10:17,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:17,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 09:10:17,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:10:17,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:10:17,671 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:10:17,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873235148] [2020-10-13 09:10:17,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:10:17,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:10:17,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759399928] [2020-10-13 09:10:17,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:10:17,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:17,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:10:17,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:10:17,675 INFO L87 Difference]: Start difference. First operand 1333 states and 1840 transitions. Second operand 5 states. [2020-10-13 09:10:25,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:10:25,601 INFO L93 Difference]: Finished difference Result 2388 states and 3301 transitions. [2020-10-13 09:10:25,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:10:25,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-13 09:10:25,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:10:25,611 INFO L225 Difference]: With dead ends: 2388 [2020-10-13 09:10:25,611 INFO L226 Difference]: Without dead ends: 1339 [2020-10-13 09:10:25,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:10:25,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2020-10-13 09:10:25,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1333. [2020-10-13 09:10:25,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1333 states. [2020-10-13 09:10:25,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1835 transitions. [2020-10-13 09:10:25,655 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1835 transitions. Word has length 144 [2020-10-13 09:10:25,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:10:25,656 INFO L479 AbstractCegarLoop]: Abstraction has 1333 states and 1835 transitions. [2020-10-13 09:10:25,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:10:25,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1835 transitions. [2020-10-13 09:10:25,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 09:10:25,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:25,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:10:25,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:10:25,659 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:25,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:25,660 INFO L82 PathProgramCache]: Analyzing trace with hash 296284923, now seen corresponding path program 1 times [2020-10-13 09:10:25,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:25,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049466759] [2020-10-13 09:10:25,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:25,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:25,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:26,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:26,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 09:10:26,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:10:26,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 824 [2020-10-13 09:10:26,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:26,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:10:26,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-13 09:10:26,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 09:10:26,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:26,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:26,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:26,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:26,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:26,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:26,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:10:26,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:26,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:26,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:10:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:26,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:26,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:26,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:10:26,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:26,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 09:10:26,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:26,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 09:10:26,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:10:26,850 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:10:26,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049466759] [2020-10-13 09:10:26,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:10:26,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:10:26,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588476007] [2020-10-13 09:10:26,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:10:26,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:26,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:10:26,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:10:26,853 INFO L87 Difference]: Start difference. First operand 1333 states and 1835 transitions. Second operand 5 states. [2020-10-13 09:10:36,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:10:36,525 INFO L93 Difference]: Finished difference Result 3915 states and 5458 transitions. [2020-10-13 09:10:36,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:10:36,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-13 09:10:36,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:10:36,542 INFO L225 Difference]: With dead ends: 3915 [2020-10-13 09:10:36,542 INFO L226 Difference]: Without dead ends: 2588 [2020-10-13 09:10:36,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:10:36,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2020-10-13 09:10:36,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 2588. [2020-10-13 09:10:36,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2588 states. [2020-10-13 09:10:36,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2588 states to 2588 states and 3246 transitions. [2020-10-13 09:10:36,613 INFO L78 Accepts]: Start accepts. Automaton has 2588 states and 3246 transitions. Word has length 148 [2020-10-13 09:10:36,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:10:36,614 INFO L479 AbstractCegarLoop]: Abstraction has 2588 states and 3246 transitions. [2020-10-13 09:10:36,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:10:36,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2588 states and 3246 transitions. [2020-10-13 09:10:36,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 09:10:36,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:36,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:10:36,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:10:36,618 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:36,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:36,618 INFO L82 PathProgramCache]: Analyzing trace with hash -588703165, now seen corresponding path program 1 times [2020-10-13 09:10:36,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:36,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374226493] [2020-10-13 09:10:36,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:36,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:36,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:37,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:37,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 09:10:37,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:10:37,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 706 [2020-10-13 09:10:37,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:37,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:10:37,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:10:37,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 09:10:37,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:37,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:37,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:37,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:37,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:37,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:37,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:10:37,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:37,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:37,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:37,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:37,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:10:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:37,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:37,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:37,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 09:10:37,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:37,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:10:37,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 09:10:37,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:37,565 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:10:37,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374226493] [2020-10-13 09:10:37,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:10:37,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:10:37,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020065623] [2020-10-13 09:10:37,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:10:37,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:37,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:10:37,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:10:37,567 INFO L87 Difference]: Start difference. First operand 2588 states and 3246 transitions. Second operand 5 states. [2020-10-13 09:10:45,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:10:45,119 INFO L93 Difference]: Finished difference Result 5474 states and 7067 transitions. [2020-10-13 09:10:45,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:10:45,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-13 09:10:45,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:10:45,130 INFO L225 Difference]: With dead ends: 5474 [2020-10-13 09:10:45,131 INFO L226 Difference]: Without dead ends: 2892 [2020-10-13 09:10:45,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:10:45,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-10-13 09:10:45,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2889. [2020-10-13 09:10:45,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2889 states. [2020-10-13 09:10:45,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2889 states to 2889 states and 3504 transitions. [2020-10-13 09:10:45,194 INFO L78 Accepts]: Start accepts. Automaton has 2889 states and 3504 transitions. Word has length 152 [2020-10-13 09:10:45,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:10:45,195 INFO L479 AbstractCegarLoop]: Abstraction has 2889 states and 3504 transitions. [2020-10-13 09:10:45,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:10:45,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2889 states and 3504 transitions. [2020-10-13 09:10:45,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 09:10:45,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:45,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:10:45,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:10:45,199 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:45,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:45,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1581180517, now seen corresponding path program 1 times [2020-10-13 09:10:45,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:45,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222086542] [2020-10-13 09:10:45,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:45,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:45,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:46,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:46,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-13 09:10:46,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:10:46,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 925 [2020-10-13 09:10:46,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:46,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:10:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 09:10:46,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 09:10:46,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:46,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:46,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:46,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:46,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:46,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:46,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:10:46,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:46,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:46,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:46,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:10:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:46,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:46,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:46,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:10:46,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:46,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 09:10:46,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:46,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:46,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:46,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 09:10:46,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:46,490 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:10:46,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222086542] [2020-10-13 09:10:46,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:10:46,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:10:46,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243002348] [2020-10-13 09:10:46,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:10:46,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:46,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:10:46,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:10:46,493 INFO L87 Difference]: Start difference. First operand 2889 states and 3504 transitions. Second operand 5 states. [2020-10-13 09:10:55,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:10:55,879 INFO L93 Difference]: Finished difference Result 6704 states and 8376 transitions. [2020-10-13 09:10:55,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:10:55,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-13 09:10:55,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:10:55,899 INFO L225 Difference]: With dead ends: 6704 [2020-10-13 09:10:55,900 INFO L226 Difference]: Without dead ends: 4130 [2020-10-13 09:10:55,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:10:55,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2020-10-13 09:10:55,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 4128. [2020-10-13 09:10:55,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4128 states. [2020-10-13 09:10:55,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4128 states to 4128 states and 4882 transitions. [2020-10-13 09:10:55,991 INFO L78 Accepts]: Start accepts. Automaton has 4128 states and 4882 transitions. Word has length 178 [2020-10-13 09:10:55,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:10:55,992 INFO L479 AbstractCegarLoop]: Abstraction has 4128 states and 4882 transitions. [2020-10-13 09:10:55,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:10:55,992 INFO L276 IsEmpty]: Start isEmpty. Operand 4128 states and 4882 transitions. [2020-10-13 09:10:55,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-13 09:10:55,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:55,998 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:10:55,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:10:55,998 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:55,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:55,999 INFO L82 PathProgramCache]: Analyzing trace with hash -73807126, now seen corresponding path program 1 times [2020-10-13 09:10:55,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:55,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103058923] [2020-10-13 09:10:56,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:56,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:56,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:56,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:57,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:59,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:59,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-13 09:10:59,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:10:59,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2979 [2020-10-13 09:10:59,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:59,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:10:59,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 09:10:59,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 09:10:59,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:59,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:59,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:59,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:59,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:59,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:59,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:10:59,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:59,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:59,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:59,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:59,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:59,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:10:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:59,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:59,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:59,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:10:59,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:59,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:10:59,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:10:59,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:59,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 09:10:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:59,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:59,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:59,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:59,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 09:10:59,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:10:59,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 09:10:59,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:59,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:10:59,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:10:59,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:10:59,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:59,672 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:10:59,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103058923] [2020-10-13 09:10:59,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:10:59,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:10:59,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525955961] [2020-10-13 09:10:59,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:10:59,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:59,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:10:59,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:10:59,675 INFO L87 Difference]: Start difference. First operand 4128 states and 4882 transitions. Second operand 7 states. [2020-10-13 09:11:07,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:07,746 INFO L93 Difference]: Finished difference Result 8045 states and 9653 transitions. [2020-10-13 09:11:07,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:11:07,749 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-10-13 09:11:07,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:07,769 INFO L225 Difference]: With dead ends: 8045 [2020-10-13 09:11:07,769 INFO L226 Difference]: Without dead ends: 4190 [2020-10-13 09:11:07,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:11:07,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4190 states. [2020-10-13 09:11:07,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4190 to 4144. [2020-10-13 09:11:07,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4144 states. [2020-10-13 09:11:07,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 4909 transitions. [2020-10-13 09:11:07,877 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 4909 transitions. Word has length 220 [2020-10-13 09:11:07,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:07,877 INFO L479 AbstractCegarLoop]: Abstraction has 4144 states and 4909 transitions. [2020-10-13 09:11:07,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:11:07,878 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 4909 transitions. [2020-10-13 09:11:07,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-13 09:11:07,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:07,884 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:11:07,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:11:07,884 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:07,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:07,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1388036686, now seen corresponding path program 1 times [2020-10-13 09:11:07,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:07,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441448753] [2020-10-13 09:11:07,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:07,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:08,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:08,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:10,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:10,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-13 09:11:10,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:11:10,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2335 [2020-10-13 09:11:10,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:10,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:10,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:11:10,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 09:11:10,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:10,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:10,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:10,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:10,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:10,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:10,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:11:10,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:10,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:10,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:10,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:10,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:10,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 09:11:10,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:10,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:11:10,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:10,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:10,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:10,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:10,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:10,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 09:11:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:10,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:10,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:10,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 09:11:10,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:10,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:11:10,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:11:10,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-13 09:11:10,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441448753] [2020-10-13 09:11:10,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:10,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:11:10,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904359202] [2020-10-13 09:11:10,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:11:10,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:10,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:11:10,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:11:10,530 INFO L87 Difference]: Start difference. First operand 4144 states and 4909 transitions. Second operand 5 states. [2020-10-13 09:11:19,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:19,266 INFO L93 Difference]: Finished difference Result 9233 states and 11279 transitions. [2020-10-13 09:11:19,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:11:19,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2020-10-13 09:11:19,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:19,306 INFO L225 Difference]: With dead ends: 9233 [2020-10-13 09:11:19,306 INFO L226 Difference]: Without dead ends: 5404 [2020-10-13 09:11:19,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:11:19,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5404 states. [2020-10-13 09:11:19,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5404 to 5404. [2020-10-13 09:11:19,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5404 states. [2020-10-13 09:11:19,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5404 states to 5404 states and 6442 transitions. [2020-10-13 09:11:19,446 INFO L78 Accepts]: Start accepts. Automaton has 5404 states and 6442 transitions. Word has length 250 [2020-10-13 09:11:19,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:19,447 INFO L479 AbstractCegarLoop]: Abstraction has 5404 states and 6442 transitions. [2020-10-13 09:11:19,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:11:19,447 INFO L276 IsEmpty]: Start isEmpty. Operand 5404 states and 6442 transitions. [2020-10-13 09:11:19,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-13 09:11:19,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:19,456 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:11:19,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:11:19,457 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:19,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:19,457 INFO L82 PathProgramCache]: Analyzing trace with hash 649623561, now seen corresponding path program 1 times [2020-10-13 09:11:19,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:19,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211213583] [2020-10-13 09:11:19,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:19,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:19,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:19,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:22,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:23,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:24,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:24,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 09:11:24,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:11:24,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-13 09:11:24,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:24,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:24,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 226 [2020-10-13 09:11:24,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 09:11:24,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:11:24,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:24,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:24,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:24,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:24,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:24,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:11:24,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:24,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:24,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:24,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:24,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:24,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:24,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:24,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:24,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:11:24,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:24,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:11:24,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:24,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:11:24,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 09:11:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:25,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:25,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:25,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 09:11:25,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:25,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-13 09:11:25,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:25,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:25,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:25,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-13 09:11:25,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:25,357 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-13 09:11:25,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211213583] [2020-10-13 09:11:25,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:25,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:11:25,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995137117] [2020-10-13 09:11:25,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:11:25,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:25,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:11:25,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:11:25,364 INFO L87 Difference]: Start difference. First operand 5404 states and 6442 transitions. Second operand 5 states. [2020-10-13 09:11:35,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:35,305 INFO L93 Difference]: Finished difference Result 10524 states and 12591 transitions. [2020-10-13 09:11:35,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:11:35,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 263 [2020-10-13 09:11:35,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:35,325 INFO L225 Difference]: With dead ends: 10524 [2020-10-13 09:11:35,325 INFO L226 Difference]: Without dead ends: 5404 [2020-10-13 09:11:35,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:11:35,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5404 states. [2020-10-13 09:11:35,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5404 to 5404. [2020-10-13 09:11:35,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5404 states. [2020-10-13 09:11:35,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5404 states to 5404 states and 6436 transitions. [2020-10-13 09:11:35,462 INFO L78 Accepts]: Start accepts. Automaton has 5404 states and 6436 transitions. Word has length 263 [2020-10-13 09:11:35,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:35,463 INFO L479 AbstractCegarLoop]: Abstraction has 5404 states and 6436 transitions. [2020-10-13 09:11:35,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:11:35,463 INFO L276 IsEmpty]: Start isEmpty. Operand 5404 states and 6436 transitions. [2020-10-13 09:11:35,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-13 09:11:35,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:35,475 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:11:35,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:11:35,476 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:35,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:35,476 INFO L82 PathProgramCache]: Analyzing trace with hash 776732666, now seen corresponding path program 1 times [2020-10-13 09:11:35,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:35,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236717840] [2020-10-13 09:11:35,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:35,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:35,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:36,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:36,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:37,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:38,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:38,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:40,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:40,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 09:11:40,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:11:40,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 09:11:40,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:40,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:40,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-10-13 09:11:40,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 09:11:40,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:40,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:40,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:40,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:40,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:40,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:40,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:11:40,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:40,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:40,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:40,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:40,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:40,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:40,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:40,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:40,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:11:40,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:40,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:11:40,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:40,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:40,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:40,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:40,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:40,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 09:11:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:40,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:40,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:40,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:11:40,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:40,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:11:40,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:40,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:40,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:40,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 09:11:40,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:40,870 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-13 09:11:40,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236717840] [2020-10-13 09:11:40,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:40,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:11:40,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234044274] [2020-10-13 09:11:40,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:11:40,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:40,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:11:40,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:11:40,872 INFO L87 Difference]: Start difference. First operand 5404 states and 6436 transitions. Second operand 5 states. [2020-10-13 09:11:54,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:54,261 INFO L93 Difference]: Finished difference Result 15188 states and 18435 transitions. [2020-10-13 09:11:54,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:11:54,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 263 [2020-10-13 09:11:54,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:54,305 INFO L225 Difference]: With dead ends: 15188 [2020-10-13 09:11:54,305 INFO L226 Difference]: Without dead ends: 10099 [2020-10-13 09:11:54,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:11:54,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10099 states. [2020-10-13 09:11:54,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10099 to 9769. [2020-10-13 09:11:54,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9769 states. [2020-10-13 09:11:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9769 states to 9769 states and 11831 transitions. [2020-10-13 09:11:54,565 INFO L78 Accepts]: Start accepts. Automaton has 9769 states and 11831 transitions. Word has length 263 [2020-10-13 09:11:54,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:54,567 INFO L479 AbstractCegarLoop]: Abstraction has 9769 states and 11831 transitions. [2020-10-13 09:11:54,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:11:54,567 INFO L276 IsEmpty]: Start isEmpty. Operand 9769 states and 11831 transitions. [2020-10-13 09:11:54,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-13 09:11:54,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:54,584 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:11:54,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:11:54,585 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:54,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:54,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1967221282, now seen corresponding path program 1 times [2020-10-13 09:11:54,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:54,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269117813] [2020-10-13 09:11:54,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:54,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:54,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:55,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:56,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:58,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:58,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-13 09:11:58,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:11:58,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4142 [2020-10-13 09:11:58,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:58,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:11:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 09:11:58,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:58,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:58,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:58,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:58,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:58,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:58,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:11:58,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:58,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:58,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:58,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:58,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:58,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:58,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:58,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:58,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:11:58,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:58,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:11:58,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:58,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:58,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 09:11:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:59,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:59,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:59,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 09:11:59,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:59,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 09:11:59,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:59,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:59,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-13 09:11:59,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:59,195 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-13 09:11:59,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269117813] [2020-10-13 09:11:59,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:59,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:11:59,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612490202] [2020-10-13 09:11:59,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:11:59,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:59,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:11:59,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:11:59,198 INFO L87 Difference]: Start difference. First operand 9769 states and 11831 transitions. Second operand 5 states. [2020-10-13 09:12:10,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:12:10,988 INFO L93 Difference]: Finished difference Result 21090 states and 26107 transitions. [2020-10-13 09:12:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:12:10,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 308 [2020-10-13 09:12:10,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:12:11,031 INFO L225 Difference]: With dead ends: 21090 [2020-10-13 09:12:11,031 INFO L226 Difference]: Without dead ends: 11636 [2020-10-13 09:12:11,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:12:11,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11636 states. [2020-10-13 09:12:11,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11636 to 11631. [2020-10-13 09:12:11,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11631 states. [2020-10-13 09:12:11,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11631 states to 11631 states and 13947 transitions. [2020-10-13 09:12:11,266 INFO L78 Accepts]: Start accepts. Automaton has 11631 states and 13947 transitions. Word has length 308 [2020-10-13 09:12:11,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:12:11,267 INFO L479 AbstractCegarLoop]: Abstraction has 11631 states and 13947 transitions. [2020-10-13 09:12:11,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:12:11,267 INFO L276 IsEmpty]: Start isEmpty. Operand 11631 states and 13947 transitions. [2020-10-13 09:12:11,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-13 09:12:11,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:12:11,286 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:12:11,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:12:11,287 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:12:11,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:12:11,287 INFO L82 PathProgramCache]: Analyzing trace with hash -820720573, now seen corresponding path program 1 times [2020-10-13 09:12:11,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:12:11,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550014871] [2020-10-13 09:12:11,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:12:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:11,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:11,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:11,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:12,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:13,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:14,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:16,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:16,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-13 09:12:16,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:12:16,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 09:12:16,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:16,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:16,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-10-13 09:12:16,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:12:16,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:16,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:16,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:16,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:16,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:16,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:16,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:12:16,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:16,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:16,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:16,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:16,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:16,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:12:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:16,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:16,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:16,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:12:16,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:16,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:12:16,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:16,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:16,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:16,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:16,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:16,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 09:12:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:16,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:16,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:16,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:12:16,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:16,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:12:16,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 09:12:16,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:16,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-13 09:12:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:16,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:16,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:16,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:12:16,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:16,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:12:16,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:16,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:16,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:12:16,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:12:16,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-13 09:12:16,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550014871] [2020-10-13 09:12:16,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:12:16,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:12:16,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165425399] [2020-10-13 09:12:16,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:12:16,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:16,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:12:16,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:12:16,949 INFO L87 Difference]: Start difference. First operand 11631 states and 13947 transitions. Second operand 7 states.