/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_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:06:09,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:06:09,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:06:09,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:06:09,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:06:09,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:06:09,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:06:09,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:06:09,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:06:09,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:06:09,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:06:09,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:06:09,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:06:09,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:06:09,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:06:09,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:06:09,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:06:09,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:06:09,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:06:09,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:06:09,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:06:09,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:06:09,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:06:09,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:06:09,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:06:09,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:06:09,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:06:09,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:06:09,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:06:09,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:06:09,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:06:09,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:06:09,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:06:09,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:06:09,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:06:09,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:06:09,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:06:09,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:06:09,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:06:09,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:06:09,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:06:09,466 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 09:06:09,502 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:06:09,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:06:09,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:06:09,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:06:09,505 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:06:09,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:06:09,506 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:06:09,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:06:09,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:06:09,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:06:09,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:06:09,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:06:09,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:06:09,508 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:06:09,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:06:09,508 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:06:09,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:06:09,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:06:09,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:06:09,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:06:09,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:06:09,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:06:09,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:06:09,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:06:09,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:06:09,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:06:09,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:06:09,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:06:09,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:06:09,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> 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 09:06:09,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:06:09,810 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:06:09,814 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:06:09,815 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:06:09,816 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:06:09,816 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label37.c [2020-10-13 09:06:09,874 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09e526c69/d7ab9f0b6ec541d2a1af1e24b18d11ce/FLAGc89131566 [2020-10-13 09:06:10,564 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:06:10,564 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label37.c [2020-10-13 09:06:10,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09e526c69/d7ab9f0b6ec541d2a1af1e24b18d11ce/FLAGc89131566 [2020-10-13 09:06:10,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09e526c69/d7ab9f0b6ec541d2a1af1e24b18d11ce [2020-10-13 09:06:10,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:06:10,710 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:06:10,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:06:10,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:06:10,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:06:10,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:06:10" (1/1) ... [2020-10-13 09:06:10,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73fa4179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:10, skipping insertion in model container [2020-10-13 09:06:10,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:06:10" (1/1) ... [2020-10-13 09:06:10,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:06:10,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:06:11,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:06:11,820 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:06:12,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:06:12,247 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:06:12,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:12 WrapperNode [2020-10-13 09:06:12,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:06:12,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:06:12,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:06:12,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:06:12,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:12" (1/1) ... [2020-10-13 09:06:12,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:12" (1/1) ... [2020-10-13 09:06:12,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:12" (1/1) ... [2020-10-13 09:06:12,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:12" (1/1) ... [2020-10-13 09:06:12,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:12" (1/1) ... [2020-10-13 09:06:12,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:12" (1/1) ... [2020-10-13 09:06:12,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:12" (1/1) ... [2020-10-13 09:06:12,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:06:12,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:06:12,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:06:12,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:06:12,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:12" (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 09:06:12,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:06:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:06:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:06:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:06:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:06:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:06:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:06:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:06:12,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:06:12,495 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:06:12,495 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:06:12,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:06:12,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:06:18,603 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:06:18,605 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:06:18,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:06:18 BoogieIcfgContainer [2020-10-13 09:06:18,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:06:18,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:06:18,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:06:18,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:06:18,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:06:10" (1/3) ... [2020-10-13 09:06:18,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b5b085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:06:18, skipping insertion in model container [2020-10-13 09:06:18,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:12" (2/3) ... [2020-10-13 09:06:18,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b5b085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:06:18, skipping insertion in model container [2020-10-13 09:06:18,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:06:18" (3/3) ... [2020-10-13 09:06:18,629 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label37.c [2020-10-13 09:06:18,641 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:06:18,657 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:06:18,674 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:06:18,712 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:06:18,712 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:06:18,712 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:06:18,712 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:06:18,712 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:06:18,713 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:06:18,713 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:06:18,713 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:06:18,748 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 09:06:18,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 09:06:18,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:18,756 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] [2020-10-13 09:06:18,757 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:18,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:18,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1350475056, now seen corresponding path program 1 times [2020-10-13 09:06:18,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:18,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290725176] [2020-10-13 09:06:18,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:19,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:19,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:19,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 09:06:19,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:19,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-13 09:06:19,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:19,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:06:19,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:06:19,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 09:06:19,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:06:19,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:19,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:19,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:19,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:19,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:19,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:06:19,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:19,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:19,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:19,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:06:19,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:19,383 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 09:06:19,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290725176] [2020-10-13 09:06:19,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:06:19,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:06:19,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743182601] [2020-10-13 09:06:19,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:06:19,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:19,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:06:19,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:06:19,409 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 09:06:27,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:27,585 INFO L93 Difference]: Finished difference Result 1224 states and 2200 transitions. [2020-10-13 09:06:27,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:27,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-13 09:06:27,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:27,608 INFO L225 Difference]: With dead ends: 1224 [2020-10-13 09:06:27,608 INFO L226 Difference]: Without dead ends: 708 [2020-10-13 09:06:27,620 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 09:06:27,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-13 09:06:27,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 694. [2020-10-13 09:06:27,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-13 09:06:27,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1080 transitions. [2020-10-13 09:06:27,712 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1080 transitions. Word has length 26 [2020-10-13 09:06:27,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:27,712 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1080 transitions. [2020-10-13 09:06:27,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:06:27,713 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1080 transitions. [2020-10-13 09:06:27,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 09:06:27,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:27,717 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:06:27,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:06:27,718 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:27,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:27,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1195195057, now seen corresponding path program 1 times [2020-10-13 09:06:27,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:27,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251601847] [2020-10-13 09:06:27,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:27,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:28,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:28,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:28,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:28,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 09:06:28,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:06:28,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1087 [2020-10-13 09:06:28,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:28,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:28,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:06:28,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:06:28,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:06:28,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:28,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:28,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:28,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:28,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:28,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:06:28,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:28,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:28,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:28,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:06:28,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:28,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:29,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:29,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:06:29,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:29,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:06:29,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:29,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:29,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:29,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:06:29,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 09:06:29,101 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:06:29,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251601847] [2020-10-13 09:06:29,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:29,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:29,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722166645] [2020-10-13 09:06:29,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:29,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:29,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:29,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:29,105 INFO L87 Difference]: Start difference. First operand 694 states and 1080 transitions. Second operand 5 states. [2020-10-13 09:06:36,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:36,943 INFO L93 Difference]: Finished difference Result 1695 states and 2713 transitions. [2020-10-13 09:06:36,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:36,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-13 09:06:36,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:36,951 INFO L225 Difference]: With dead ends: 1695 [2020-10-13 09:06:36,952 INFO L226 Difference]: Without dead ends: 1007 [2020-10-13 09:06:36,955 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 09:06:36,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-10-13 09:06:36,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 1005. [2020-10-13 09:06:36,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-10-13 09:06:36,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1362 transitions. [2020-10-13 09:06:36,995 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1362 transitions. Word has length 96 [2020-10-13 09:06:36,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:36,996 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1362 transitions. [2020-10-13 09:06:36,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:36,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1362 transitions. [2020-10-13 09:06:36,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 09:06:36,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:37,000 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:06:37,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:06:37,000 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:37,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:37,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1445266351, now seen corresponding path program 1 times [2020-10-13 09:06:37,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:37,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471455433] [2020-10-13 09:06:37,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:37,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:37,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:38,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:38,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 09:06:38,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:06:38,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-10-13 09:06:38,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 09:06:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:06:38,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:06:38,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:38,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:38,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:38,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:38,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:38,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:06:38,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:38,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:38,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:38,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:38,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:38,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:06:38,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:38,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 09:06:38,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:38,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:38,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:38,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 09:06:38,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:38,350 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:06:38,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471455433] [2020-10-13 09:06:38,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:38,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:38,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771826222] [2020-10-13 09:06:38,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:38,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:38,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:38,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:38,353 INFO L87 Difference]: Start difference. First operand 1005 states and 1362 transitions. Second operand 5 states. [2020-10-13 09:06:46,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:46,460 INFO L93 Difference]: Finished difference Result 2329 states and 3322 transitions. [2020-10-13 09:06:46,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:46,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 09:06:46,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:46,476 INFO L225 Difference]: With dead ends: 2329 [2020-10-13 09:06:46,477 INFO L226 Difference]: Without dead ends: 1639 [2020-10-13 09:06:46,481 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 09:06:46,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2020-10-13 09:06:46,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1639. [2020-10-13 09:06:46,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1639 states. [2020-10-13 09:06:46,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2086 transitions. [2020-10-13 09:06:46,530 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2086 transitions. Word has length 109 [2020-10-13 09:06:46,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:46,531 INFO L479 AbstractCegarLoop]: Abstraction has 1639 states and 2086 transitions. [2020-10-13 09:06:46,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:46,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2086 transitions. [2020-10-13 09:06:46,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 09:06:46,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:46,534 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:06:46,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:06:46,535 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:46,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:46,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1870199768, now seen corresponding path program 1 times [2020-10-13 09:06:46,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:46,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746881715] [2020-10-13 09:06:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:46,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:46,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:47,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:47,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:47,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:47,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 09:06:47,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:06:47,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 914 [2020-10-13 09:06:47,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:47,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:47,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 09:06:47,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 09:06:47,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:47,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:47,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:47,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:47,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:47,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:47,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:06:47,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:47,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:47,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:47,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:47,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:47,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:47,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:47,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:47,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:06:47,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:47,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 09:06:47,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:47,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:47,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:06:47,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:06:47,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746881715] [2020-10-13 09:06:47,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:47,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:47,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332465001] [2020-10-13 09:06:47,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:47,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:47,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:47,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:47,839 INFO L87 Difference]: Start difference. First operand 1639 states and 2086 transitions. Second operand 5 states. [2020-10-13 09:06:54,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:54,846 INFO L93 Difference]: Finished difference Result 3005 states and 3872 transitions. [2020-10-13 09:06:54,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:54,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 09:06:54,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:54,864 INFO L225 Difference]: With dead ends: 3005 [2020-10-13 09:06:54,864 INFO L226 Difference]: Without dead ends: 1639 [2020-10-13 09:06:54,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:06:54,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2020-10-13 09:06:54,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1639. [2020-10-13 09:06:54,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1639 states. [2020-10-13 09:06:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2081 transitions. [2020-10-13 09:06:54,917 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2081 transitions. Word has length 112 [2020-10-13 09:06:54,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:54,918 INFO L479 AbstractCegarLoop]: Abstraction has 1639 states and 2081 transitions. [2020-10-13 09:06:54,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:54,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2081 transitions. [2020-10-13 09:06:54,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 09:06:54,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:54,921 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:06:54,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:06:54,922 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:54,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:54,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1860385100, now seen corresponding path program 1 times [2020-10-13 09:06:54,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:54,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437937900] [2020-10-13 09:06:54,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:54,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:55,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:55,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:55,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 09:06:55,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:06:55,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 959 [2020-10-13 09:06:55,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:55,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:55,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 09:06:55,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:06:55,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:55,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:55,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:55,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:55,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:55,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:55,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:06:55,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:55,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:55,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:55,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:55,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:56,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:56,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:56,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:56,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 09:06:56,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:56,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 09:06:56,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:56,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:56,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:56,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:06:56,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:56,198 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:06:56,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437937900] [2020-10-13 09:06:56,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:56,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:56,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318336750] [2020-10-13 09:06:56,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:56,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:56,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:56,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:56,202 INFO L87 Difference]: Start difference. First operand 1639 states and 2081 transitions. Second operand 5 states. [2020-10-13 09:07:02,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:07:02,210 INFO L93 Difference]: Finished difference Result 3585 states and 4744 transitions. [2020-10-13 09:07:02,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:07:02,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-13 09:07:02,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:07:02,230 INFO L225 Difference]: With dead ends: 3585 [2020-10-13 09:07:02,230 INFO L226 Difference]: Without dead ends: 2261 [2020-10-13 09:07:02,239 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 09:07:02,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2020-10-13 09:07:02,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2259. [2020-10-13 09:07:02,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2259 states. [2020-10-13 09:07:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 2779 transitions. [2020-10-13 09:07:02,305 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 2779 transitions. Word has length 142 [2020-10-13 09:07:02,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:07:02,305 INFO L479 AbstractCegarLoop]: Abstraction has 2259 states and 2779 transitions. [2020-10-13 09:07:02,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:07:02,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 2779 transitions. [2020-10-13 09:07:02,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-13 09:07:02,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:07:02,312 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:07:02,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:07:02,312 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:07:02,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:07:02,313 INFO L82 PathProgramCache]: Analyzing trace with hash 431399214, now seen corresponding path program 1 times [2020-10-13 09:07:02,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:07:02,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175049023] [2020-10-13 09:07:02,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:07:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:02,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:02,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:02,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:03,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:03,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:03,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-13 09:07:03,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:07:03,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1052 [2020-10-13 09:07:03,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:03,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:07:03,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:07:03,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:07:03,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:03,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:07:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:03,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:03,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:03,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:07:03,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:03,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:07:03,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:03,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:03,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:07:03,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:07:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:03,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:03,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:03,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:07:03,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:03,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 09:07:03,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:03,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:07:03,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:03,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:07:03,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:03,729 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:07:03,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175049023] [2020-10-13 09:07:03,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:07:03,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:07:03,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955374561] [2020-10-13 09:07:03,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:07:03,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:07:03,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:07:03,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:07:03,733 INFO L87 Difference]: Start difference. First operand 2259 states and 2779 transitions. Second operand 5 states. [2020-10-13 09:07:09,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:07:09,671 INFO L93 Difference]: Finished difference Result 5139 states and 6539 transitions. [2020-10-13 09:07:09,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:07:09,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-13 09:07:09,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:07:09,688 INFO L225 Difference]: With dead ends: 5139 [2020-10-13 09:07:09,688 INFO L226 Difference]: Without dead ends: 3195 [2020-10-13 09:07:09,693 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 09:07:09,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2020-10-13 09:07:09,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3195. [2020-10-13 09:07:09,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3195 states. [2020-10-13 09:07:09,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 3959 transitions. [2020-10-13 09:07:09,767 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 3959 transitions. Word has length 149 [2020-10-13 09:07:09,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:07:09,767 INFO L479 AbstractCegarLoop]: Abstraction has 3195 states and 3959 transitions. [2020-10-13 09:07:09,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:07:09,768 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 3959 transitions. [2020-10-13 09:07:09,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 09:07:09,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:07:09,771 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:07:09,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:07:09,771 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:07:09,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:07:09,771 INFO L82 PathProgramCache]: Analyzing trace with hash -151449746, now seen corresponding path program 1 times [2020-10-13 09:07:09,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:07:09,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656763019] [2020-10-13 09:07:09,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:07:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:09,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:10,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:10,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:10,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:11,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:11,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-13 09:07:11,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:07:11,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1358 [2020-10-13 09:07:11,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:11,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:07:11,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-13 09:07:11,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:07:11,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:11,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:07:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:11,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:11,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:11,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:07:11,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:11,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:07:11,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:11,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:11,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:11,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:11,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:11,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:07:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:11,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:11,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:11,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 09:07:11,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:11,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 09:07:11,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:11,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:07:11,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:11,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 09:07:11,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:07:11,466 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:07:11,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656763019] [2020-10-13 09:07:11,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:07:11,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:07:11,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964185027] [2020-10-13 09:07:11,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:07:11,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:07:11,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:07:11,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:07:11,471 INFO L87 Difference]: Start difference. First operand 3195 states and 3959 transitions. Second operand 5 states. [2020-10-13 09:07:17,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:07:17,788 INFO L93 Difference]: Finished difference Result 8588 states and 10908 transitions. [2020-10-13 09:07:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:07:17,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-13 09:07:17,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:07:17,823 INFO L225 Difference]: With dead ends: 8588 [2020-10-13 09:07:17,823 INFO L226 Difference]: Without dead ends: 5708 [2020-10-13 09:07:17,832 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 09:07:17,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5708 states. [2020-10-13 09:07:17,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5708 to 5697. [2020-10-13 09:07:17,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5697 states. [2020-10-13 09:07:17,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5697 states to 5697 states and 7015 transitions. [2020-10-13 09:07:17,980 INFO L78 Accepts]: Start accepts. Automaton has 5697 states and 7015 transitions. Word has length 160 [2020-10-13 09:07:17,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:07:17,981 INFO L479 AbstractCegarLoop]: Abstraction has 5697 states and 7015 transitions. [2020-10-13 09:07:17,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:07:17,981 INFO L276 IsEmpty]: Start isEmpty. Operand 5697 states and 7015 transitions. [2020-10-13 09:07:17,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 09:07:17,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:07:17,985 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:07:17,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:07:17,985 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:07:17,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:07:17,986 INFO L82 PathProgramCache]: Analyzing trace with hash -2050749282, now seen corresponding path program 1 times [2020-10-13 09:07:17,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:07:17,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688891332] [2020-10-13 09:07:17,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:07:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:18,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:18,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:19,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:21,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:21,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:21,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:07:21,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:07:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3692 [2020-10-13 09:07:21,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:07:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 09:07:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:07:21,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:21,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:07:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:21,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:21,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:21,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:07:21,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:21,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:07:21,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:21,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:21,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:21,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:21,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:21,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:07:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:21,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:21,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:21,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:07:21,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:21,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:07:21,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:21,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:07:21,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:21,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:07:21,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:07:21,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 09:07:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:21,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:22,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:22,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:22,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:07:22,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:07:22,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-13 09:07:22,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:22,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:07:22,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:07:22,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:07:22,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:07:22,407 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:07:22,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688891332] [2020-10-13 09:07:22,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:07:22,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:07:22,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090259582] [2020-10-13 09:07:22,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:07:22,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:07:22,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:07:22,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:07:22,411 INFO L87 Difference]: Start difference. First operand 5697 states and 7015 transitions. Second operand 7 states. [2020-10-13 09:07:33,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:07:33,444 INFO L93 Difference]: Finished difference Result 13128 states and 17304 transitions. [2020-10-13 09:07:33,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:07:33,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-10-13 09:07:33,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:07:33,491 INFO L225 Difference]: With dead ends: 13128 [2020-10-13 09:07:33,492 INFO L226 Difference]: Without dead ends: 7722 [2020-10-13 09:07:33,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:07:33,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7722 states. [2020-10-13 09:07:33,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7722 to 7651. [2020-10-13 09:07:33,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7651 states. [2020-10-13 09:07:33,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7651 states to 7651 states and 9697 transitions. [2020-10-13 09:07:33,730 INFO L78 Accepts]: Start accepts. Automaton has 7651 states and 9697 transitions. Word has length 177 [2020-10-13 09:07:33,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:07:33,730 INFO L479 AbstractCegarLoop]: Abstraction has 7651 states and 9697 transitions. [2020-10-13 09:07:33,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:07:33,731 INFO L276 IsEmpty]: Start isEmpty. Operand 7651 states and 9697 transitions. [2020-10-13 09:07:33,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-13 09:07:33,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:07:33,736 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:07:33,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:07:33,737 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:07:33,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:07:33,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1755322979, now seen corresponding path program 1 times [2020-10-13 09:07:33,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:07:33,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920323202] [2020-10-13 09:07:33,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:07:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:33,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:34,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:34,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:35,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:35,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-13 09:07:35,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:07:35,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1271 [2020-10-13 09:07:35,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:35,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:07:35,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:07:35,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:07:35,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:35,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:07:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:35,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:35,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:35,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:07:35,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:35,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:07:35,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:35,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:35,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:35,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:35,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:07:35,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:07:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:35,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:35,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:35,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 09:07:35,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:35,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-13 09:07:35,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:35,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:07:35,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:35,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-13 09:07:35,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:07:35,597 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:07:35,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920323202] [2020-10-13 09:07:35,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:07:35,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:07:35,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442306322] [2020-10-13 09:07:35,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:07:35,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:07:35,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:07:35,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:07:35,614 INFO L87 Difference]: Start difference. First operand 7651 states and 9697 transitions. Second operand 5 states. [2020-10-13 09:07:46,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:07:46,265 INFO L93 Difference]: Finished difference Result 20279 states and 26452 transitions. [2020-10-13 09:07:46,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:07:46,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-10-13 09:07:46,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:07:46,334 INFO L225 Difference]: With dead ends: 20279 [2020-10-13 09:07:46,335 INFO L226 Difference]: Without dead ends: 12967 [2020-10-13 09:07:46,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:07:46,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12967 states. [2020-10-13 09:07:46,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12967 to 11121. [2020-10-13 09:07:46,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11121 states. [2020-10-13 09:07:46,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11121 states to 11121 states and 14750 transitions. [2020-10-13 09:07:46,609 INFO L78 Accepts]: Start accepts. Automaton has 11121 states and 14750 transitions. Word has length 202 [2020-10-13 09:07:46,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:07:46,609 INFO L479 AbstractCegarLoop]: Abstraction has 11121 states and 14750 transitions. [2020-10-13 09:07:46,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:07:46,610 INFO L276 IsEmpty]: Start isEmpty. Operand 11121 states and 14750 transitions. [2020-10-13 09:07:46,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-13 09:07:46,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:07:46,616 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:07:46,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:07:46,616 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:07:46,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:07:46,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1991265474, now seen corresponding path program 1 times [2020-10-13 09:07:46,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:07:46,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047374637] [2020-10-13 09:07:46,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:07:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:46,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:46,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:46,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:48,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:51,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:51,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-13 09:07:51,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:07:51,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 09:07:51,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:07:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-13 09:07:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:07:51,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:51,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:07:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:51,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:51,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:51,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:07:51,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:51,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:07:51,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:51,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:51,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:51,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:07:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:51,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:51,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:51,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:07:51,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:51,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:07:51,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:51,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:07:51,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:51,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:07:51,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:51,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 09:07:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:51,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:51,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:07:51,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:07:51,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:07:51,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 09:07:51,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:07:51,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:07:51,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:07:51,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 09:07:51,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:07:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-13 09:07:51,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047374637] [2020-10-13 09:07:51,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:07:51,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:07:51,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648325218] [2020-10-13 09:07:51,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:07:51,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:07:51,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:07:51,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:07:51,971 INFO L87 Difference]: Start difference. First operand 11121 states and 14750 transitions. Second operand 5 states. [2020-10-13 09:07:58,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:07:58,401 INFO L93 Difference]: Finished difference Result 25039 states and 34194 transitions. [2020-10-13 09:07:58,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:07:58,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-13 09:07:58,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:07:58,540 INFO L225 Difference]: With dead ends: 25039 [2020-10-13 09:07:58,540 INFO L226 Difference]: Without dead ends: 14233 [2020-10-13 09:07:58,566 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 09:07:58,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14233 states. [2020-10-13 09:07:58,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14233 to 14233. [2020-10-13 09:07:58,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14233 states. [2020-10-13 09:07:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14233 states to 14233 states and 18326 transitions. [2020-10-13 09:07:58,943 INFO L78 Accepts]: Start accepts. Automaton has 14233 states and 18326 transitions. Word has length 224 [2020-10-13 09:07:58,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:07:58,944 INFO L479 AbstractCegarLoop]: Abstraction has 14233 states and 18326 transitions. [2020-10-13 09:07:58,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:07:58,944 INFO L276 IsEmpty]: Start isEmpty. Operand 14233 states and 18326 transitions. [2020-10-13 09:07:58,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-13 09:07:58,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:07:58,963 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:07:58,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:07:58,964 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:07:58,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:07:58,966 INFO L82 PathProgramCache]: Analyzing trace with hash 908319029, now seen corresponding path program 1 times [2020-10-13 09:07:58,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:07:58,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339199350] [2020-10-13 09:07:58,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:07:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:07:59,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:07:59,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:01,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:02,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:02,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-13 09:08:02,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:08:02,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3349 [2020-10-13 09:08:02,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:08:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 09:08:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 09:08:02,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:02,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:08:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:02,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:02,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:02,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:08:02,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:02,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:08:02,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:02,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:02,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:02,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:02,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:02,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:08:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:02,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:02,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:02,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:08:02,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:02,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:08:02,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:08:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 09:08:02,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:02,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 09:08:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:02,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:02,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:03,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:03,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 09:08:03,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:08:03,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-13 09:08:03,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:03,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:08:03,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:08:03,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-13 09:08:03,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:03,148 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 118 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:08:03,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339199350] [2020-10-13 09:08:03,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:08:03,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:08:03,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035542856] [2020-10-13 09:08:03,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:08:03,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:08:03,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:08:03,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:08:03,150 INFO L87 Difference]: Start difference. First operand 14233 states and 18326 transitions. Second operand 7 states. [2020-10-13 09:08:13,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:08:13,645 INFO L93 Difference]: Finished difference Result 31413 states and 41780 transitions. [2020-10-13 09:08:13,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:08:13,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 268 [2020-10-13 09:08:13,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:08:13,734 INFO L225 Difference]: With dead ends: 31413 [2020-10-13 09:08:13,734 INFO L226 Difference]: Without dead ends: 21204 [2020-10-13 09:08:13,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:08:13,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21204 states. [2020-10-13 09:08:14,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21204 to 21084. [2020-10-13 09:08:14,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21084 states. [2020-10-13 09:08:14,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21084 states to 21084 states and 27599 transitions. [2020-10-13 09:08:14,261 INFO L78 Accepts]: Start accepts. Automaton has 21084 states and 27599 transitions. Word has length 268 [2020-10-13 09:08:14,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:08:14,261 INFO L479 AbstractCegarLoop]: Abstraction has 21084 states and 27599 transitions. [2020-10-13 09:08:14,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:08:14,262 INFO L276 IsEmpty]: Start isEmpty. Operand 21084 states and 27599 transitions. [2020-10-13 09:08:14,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-13 09:08:14,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:08:14,277 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:14,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:08:14,278 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:08:14,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:08:14,278 INFO L82 PathProgramCache]: Analyzing trace with hash -781371875, now seen corresponding path program 1 times [2020-10-13 09:08:14,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:08:14,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79498569] [2020-10-13 09:08:14,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:08:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:14,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:14,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:14,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-13 09:08:14,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:14,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-10-13 09:08:14,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:14,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:08:14,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:08:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-13 09:08:14,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:14,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:08:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:14,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:14,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:14,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:08:14,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:14,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:08:14,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:08:14,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:14,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:08:14,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:15,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:08:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:15,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:16,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:16,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 09:08:16,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:16,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-10-13 09:08:16,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:08:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:08:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 260 [2020-10-13 09:08:16,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:16,350 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:08:16,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79498569] [2020-10-13 09:08:16,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:08:16,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 09:08:16,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645845414] [2020-10-13 09:08:16,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:08:16,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:08:16,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:08:16,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:08:16,353 INFO L87 Difference]: Start difference. First operand 21084 states and 27599 transitions. Second operand 7 states. [2020-10-13 09:08:26,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:08:26,757 INFO L93 Difference]: Finished difference Result 34049 states and 44028 transitions. [2020-10-13 09:08:26,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:08:26,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 285 [2020-10-13 09:08:26,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:08:26,792 INFO L225 Difference]: With dead ends: 34049 [2020-10-13 09:08:26,792 INFO L226 Difference]: Without dead ends: 13013 [2020-10-13 09:08:26,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:08:26,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13013 states. [2020-10-13 09:08:27,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13013 to 12374. [2020-10-13 09:08:27,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12374 states. [2020-10-13 09:08:27,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12374 states to 12374 states and 15205 transitions. [2020-10-13 09:08:27,108 INFO L78 Accepts]: Start accepts. Automaton has 12374 states and 15205 transitions. Word has length 285 [2020-10-13 09:08:27,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:08:27,109 INFO L479 AbstractCegarLoop]: Abstraction has 12374 states and 15205 transitions. [2020-10-13 09:08:27,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:08:27,109 INFO L276 IsEmpty]: Start isEmpty. Operand 12374 states and 15205 transitions. [2020-10-13 09:08:27,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-10-13 09:08:27,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:08:27,126 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:27,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:08:27,126 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:08:27,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:08:27,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1052005809, now seen corresponding path program 1 times [2020-10-13 09:08:27,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:08:27,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441785225] [2020-10-13 09:08:27,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:08:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:27,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:27,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:28,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:28,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:28,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:30,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:31,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:32,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:32,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 503 [2020-10-13 09:08:32,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:08:32,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 09:08:32,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:32,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:08:32,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 477 [2020-10-13 09:08:32,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:08:32,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:32,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:08:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:32,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:32,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:32,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:08:32,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:32,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:08:32,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:32,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:32,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:32,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:32,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:32,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:08:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:32,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:32,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:32,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:08:32,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:32,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:08:32,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:32,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:32,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:32,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:32,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:32,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:08:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:32,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:32,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:32,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:08:32,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:32,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:08:32,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:32,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-13 09:08:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:32,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:32,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:32,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 09:08:32,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:32,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:08:32,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:32,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:08:32,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:32,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 09:08:32,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 60 proven. 3 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2020-10-13 09:08:32,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441785225] [2020-10-13 09:08:32,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:08:32,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:08:32,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428092623] [2020-10-13 09:08:32,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:08:32,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:08:32,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:08:32,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:08:32,725 INFO L87 Difference]: Start difference. First operand 12374 states and 15205 transitions. Second operand 5 states. [2020-10-13 09:08:39,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:08:39,097 INFO L93 Difference]: Finished difference Result 23507 states and 29707 transitions. [2020-10-13 09:08:39,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:08:39,098 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 489 [2020-10-13 09:08:39,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:08:39,136 INFO L225 Difference]: With dead ends: 23507 [2020-10-13 09:08:39,136 INFO L226 Difference]: Without dead ends: 13921 [2020-10-13 09:08:39,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:08:39,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13921 states. [2020-10-13 09:08:39,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13921 to 12073. [2020-10-13 09:08:39,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12073 states. [2020-10-13 09:08:39,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12073 states to 12073 states and 14919 transitions. [2020-10-13 09:08:39,396 INFO L78 Accepts]: Start accepts. Automaton has 12073 states and 14919 transitions. Word has length 489 [2020-10-13 09:08:39,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:08:39,397 INFO L479 AbstractCegarLoop]: Abstraction has 12073 states and 14919 transitions. [2020-10-13 09:08:39,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:08:39,398 INFO L276 IsEmpty]: Start isEmpty. Operand 12073 states and 14919 transitions. [2020-10-13 09:08:39,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2020-10-13 09:08:39,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:08:39,423 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:39,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:08:39,424 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:08:39,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:08:39,425 INFO L82 PathProgramCache]: Analyzing trace with hash -760405257, now seen corresponding path program 1 times [2020-10-13 09:08:39,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:08:39,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453467403] [2020-10-13 09:08:39,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:08:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:39,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:40,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:40,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:43,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:43,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-10-13 09:08:43,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:08:43,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3955 [2020-10-13 09:08:43,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:43,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:08:43,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 492 [2020-10-13 09:08:43,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:08:43,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:43,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:08:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:43,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:43,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:43,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:08:43,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:43,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:08:43,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:43,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:43,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:43,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:43,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:43,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:08:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:43,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:43,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:43,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:08:43,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:43,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:08:43,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:43,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:43,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:43,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:43,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:43,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:08:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:43,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:43,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:43,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 09:08:43,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:43,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:08:43,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:43,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:43,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:43,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:43,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:43,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-13 09:08:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:43,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:43,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:43,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:08:43,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:43,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 09:08:43,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:43,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:08:43,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:43,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:08:43,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 60 proven. 3 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2020-10-13 09:08:44,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453467403] [2020-10-13 09:08:44,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:08:44,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:08:44,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836846623] [2020-10-13 09:08:44,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:08:44,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:08:44,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:08:44,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:08:44,007 INFO L87 Difference]: Start difference. First operand 12073 states and 14919 transitions. Second operand 5 states. [2020-10-13 09:08:53,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:08:53,362 INFO L93 Difference]: Finished difference Result 29765 states and 37554 transitions. [2020-10-13 09:08:53,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:08:53,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 504 [2020-10-13 09:08:53,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:08:53,418 INFO L225 Difference]: With dead ends: 29765 [2020-10-13 09:08:53,419 INFO L226 Difference]: Without dead ends: 17698 [2020-10-13 09:08:53,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 09:08:53,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17698 states. [2020-10-13 09:08:53,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17698 to 17679. [2020-10-13 09:08:53,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17679 states. [2020-10-13 09:08:53,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17679 states to 17679 states and 21684 transitions. [2020-10-13 09:08:53,800 INFO L78 Accepts]: Start accepts. Automaton has 17679 states and 21684 transitions. Word has length 504 [2020-10-13 09:08:53,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:08:53,801 INFO L479 AbstractCegarLoop]: Abstraction has 17679 states and 21684 transitions. [2020-10-13 09:08:53,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:08:53,801 INFO L276 IsEmpty]: Start isEmpty. Operand 17679 states and 21684 transitions. [2020-10-13 09:08:53,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2020-10-13 09:08:53,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:08:53,825 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:53,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:08:53,825 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:08:53,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:08:53,826 INFO L82 PathProgramCache]: Analyzing trace with hash -124577154, now seen corresponding path program 1 times [2020-10-13 09:08:53,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:08:53,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26689876] [2020-10-13 09:08:53,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:08:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:54,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:54,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:54,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:58,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:58,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:58,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 529 [2020-10-13 09:08:58,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:08:58,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 09:08:58,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:58,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:08:58,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 503 [2020-10-13 09:08:58,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:08:58,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:59,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:08:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:59,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:59,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:59,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:08:59,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:59,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:08:59,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:59,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:59,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:59,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:59,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:59,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:08:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:59,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:59,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:59,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:08:59,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:59,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 09:08:59,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:59,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:59,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:59,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:59,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:08:59,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:08:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:59,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:59,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:59,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:08:59,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:59,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:08:59,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:59,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:08:59,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:59,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:08:59,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:59,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:08:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:59,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:59,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:59,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 09:08:59,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:59,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-13 09:08:59,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:59,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:08:59,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:59,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-13 09:08:59,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:08:59,616 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 60 proven. 3 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2020-10-13 09:08:59,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26689876] [2020-10-13 09:08:59,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:08:59,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:08:59,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490564346] [2020-10-13 09:08:59,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:08:59,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:08:59,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:08:59,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:08:59,618 INFO L87 Difference]: Start difference. First operand 17679 states and 21684 transitions. Second operand 5 states. [2020-10-13 09:09:08,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:09:08,760 INFO L93 Difference]: Finished difference Result 38742 states and 48874 transitions. [2020-10-13 09:09:08,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:09:08,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 515 [2020-10-13 09:09:08,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:09:08,820 INFO L225 Difference]: With dead ends: 38742 [2020-10-13 09:09:08,820 INFO L226 Difference]: Without dead ends: 23550 [2020-10-13 09:09:08,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:09:08,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23550 states. [2020-10-13 09:09:09,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23550 to 23239. [2020-10-13 09:09:09,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23239 states. [2020-10-13 09:09:09,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23239 states to 23239 states and 28301 transitions. [2020-10-13 09:09:09,221 INFO L78 Accepts]: Start accepts. Automaton has 23239 states and 28301 transitions. Word has length 515 [2020-10-13 09:09:09,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:09:09,222 INFO L479 AbstractCegarLoop]: Abstraction has 23239 states and 28301 transitions. [2020-10-13 09:09:09,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:09:09,223 INFO L276 IsEmpty]: Start isEmpty. Operand 23239 states and 28301 transitions. [2020-10-13 09:09:09,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-13 09:09:09,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:09:09,240 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:09:09,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:09:09,240 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:09:09,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:09:09,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1913209042, now seen corresponding path program 1 times [2020-10-13 09:09:09,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:09:09,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203576269] [2020-10-13 09:09:09,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:09:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:09,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:09,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:09,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:12,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:13,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:14,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:14,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 551 [2020-10-13 09:09:14,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:09:14,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 09:09:14,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:14,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:09:14,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 523 [2020-10-13 09:09:14,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:09:14,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:14,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:09:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:14,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:14,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:14,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:09:14,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:14,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:09:14,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:14,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:14,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:14,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:14,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:14,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:09:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:14,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:14,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:14,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:09:14,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:14,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:09:14,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:14,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:14,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:14,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:14,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:14,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:09:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:14,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:14,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:14,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:09:14,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:14,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:09:14,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:14,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:14,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:09:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:14,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:14,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:14,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:09:14,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:14,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 09:09:14,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:14,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:09:14,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:14,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-13 09:09:14,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:14,907 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 60 proven. 3 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2020-10-13 09:09:14,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203576269] [2020-10-13 09:09:14,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:09:14,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:09:14,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070114478] [2020-10-13 09:09:14,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:09:14,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:09:14,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:09:14,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:09:14,910 INFO L87 Difference]: Start difference. First operand 23239 states and 28301 transitions. Second operand 5 states. [2020-10-13 09:09:28,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:09:28,192 INFO L93 Difference]: Finished difference Result 53607 states and 66047 transitions. [2020-10-13 09:09:28,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:09:28,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 537 [2020-10-13 09:09:28,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:09:28,265 INFO L225 Difference]: With dead ends: 53607 [2020-10-13 09:09:28,266 INFO L226 Difference]: Without dead ends: 30374 [2020-10-13 09:09:28,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 09:09:28,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30374 states. [2020-10-13 09:09:28,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30374 to 30348. [2020-10-13 09:09:28,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30348 states. [2020-10-13 09:09:28,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30348 states to 30348 states and 36832 transitions. [2020-10-13 09:09:28,806 INFO L78 Accepts]: Start accepts. Automaton has 30348 states and 36832 transitions. Word has length 537 [2020-10-13 09:09:28,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:09:28,807 INFO L479 AbstractCegarLoop]: Abstraction has 30348 states and 36832 transitions. [2020-10-13 09:09:28,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:09:28,807 INFO L276 IsEmpty]: Start isEmpty. Operand 30348 states and 36832 transitions. [2020-10-13 09:09:28,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2020-10-13 09:09:28,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:09:28,832 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 09:09:28,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:09:28,833 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:09:28,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:09:28,833 INFO L82 PathProgramCache]: Analyzing trace with hash -31612532, now seen corresponding path program 1 times [2020-10-13 09:09:28,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:09:28,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869838176] [2020-10-13 09:09:28,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:09:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:28,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:29,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:29,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:29,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:33,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:33,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 579 [2020-10-13 09:09:33,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:09:33,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 09:09:33,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:33,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:09:33,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 553 [2020-10-13 09:09:33,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:09:33,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:34,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:09:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:34,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:34,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:34,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:09:34,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:34,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:09:34,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:34,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:34,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:34,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:34,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:34,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:09:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:34,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:34,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:34,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:09:34,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:34,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:09:34,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:34,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:34,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:09:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:34,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:34,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:34,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:09:34,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:34,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:09:34,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:34,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:34,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:09:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:34,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:34,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:34,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 09:09:34,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:34,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-13 09:09:34,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:09:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 223 [2020-10-13 09:09:34,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 60 proven. 3 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2020-10-13 09:09:34,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869838176] [2020-10-13 09:09:34,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:09:34,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:09:34,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108090077] [2020-10-13 09:09:34,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:09:34,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:09:34,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:09:34,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:09:34,649 INFO L87 Difference]: Start difference. First operand 30348 states and 36832 transitions. Second operand 5 states. [2020-10-13 09:09:47,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:09:47,119 INFO L93 Difference]: Finished difference Result 66876 states and 82760 transitions. [2020-10-13 09:09:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:09:47,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 565 [2020-10-13 09:09:47,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:09:47,192 INFO L225 Difference]: With dead ends: 66876 [2020-10-13 09:09:47,192 INFO L226 Difference]: Without dead ends: 35602 [2020-10-13 09:09:47,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:09:47,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35602 states. [2020-10-13 09:09:47,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35602 to 32524. [2020-10-13 09:09:47,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32524 states. [2020-10-13 09:09:47,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32524 states to 32524 states and 39329 transitions. [2020-10-13 09:09:47,801 INFO L78 Accepts]: Start accepts. Automaton has 32524 states and 39329 transitions. Word has length 565 [2020-10-13 09:09:47,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:09:47,801 INFO L479 AbstractCegarLoop]: Abstraction has 32524 states and 39329 transitions. [2020-10-13 09:09:47,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:09:47,802 INFO L276 IsEmpty]: Start isEmpty. Operand 32524 states and 39329 transitions. [2020-10-13 09:09:47,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2020-10-13 09:09:47,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:09:47,833 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 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 09:09:47,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:09:47,833 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:09:47,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:09:47,834 INFO L82 PathProgramCache]: Analyzing trace with hash -851623024, now seen corresponding path program 1 times [2020-10-13 09:09:47,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:09:47,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555139233] [2020-10-13 09:09:47,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:09:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:47,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:48,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:48,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:49,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:52,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:52,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 594 [2020-10-13 09:09:52,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:09:52,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 09:09:52,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:52,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:09:52,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 407 [2020-10-13 09:09:52,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:09:52,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:53,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:09:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:53,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:53,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:53,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:09:53,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:53,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:09:53,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:53,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:53,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:53,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:53,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:53,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:09:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:53,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:53,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:53,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:09:53,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:53,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:09:53,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:53,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:53,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:53,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:53,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:53,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:09:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:53,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:53,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:53,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:09:53,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:53,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:09:53,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:53,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:53,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:09:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:53,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:53,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:53,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 09:09:53,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:53,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 09:09:53,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:53,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:09:53,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:53,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:09:53,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:53,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-13 09:09:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:53,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:53,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:53,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:53,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 09:09:53,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:09:53,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-13 09:09:53,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:53,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:09:53,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:09:53,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-13 09:09:53,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 429 proven. 2 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2020-10-13 09:09:54,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555139233] [2020-10-13 09:09:54,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:09:54,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:09:54,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797026315] [2020-10-13 09:09:54,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:09:54,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:09:54,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:09:54,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:09:54,257 INFO L87 Difference]: Start difference. First operand 32524 states and 39329 transitions. Second operand 6 states.