/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/Problem16_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:16:21,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:16:21,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:16:21,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:16:21,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:16:21,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:16:21,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:16:21,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:16:21,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:16:21,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:16:21,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:16:21,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:16:21,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:16:21,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:16:21,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:16:21,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:16:21,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:16:21,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:16:21,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:16:21,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:16:21,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:16:21,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:16:21,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:16:21,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:16:21,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:16:21,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:16:21,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:16:21,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:16:21,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:16:21,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:16:21,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:16:21,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:16:21,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:16:21,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:16:21,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:16:21,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:16:21,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:16:21,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:16:21,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:16:21,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:16:21,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:16:21,351 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 09:16:21,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:16:21,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:16:21,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:16:21,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:16:21,376 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:16:21,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:16:21,376 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:16:21,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:16:21,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:16:21,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:16:21,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:16:21,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:16:21,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:16:21,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:16:21,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:16:21,378 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:16:21,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:16:21,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:16:21,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:16:21,379 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:16:21,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:16:21,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:16:21,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:16:21,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:16:21,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:16:21,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:16:21,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:16:21,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:16:21,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:16:21,381 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 09:16:21,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:16:21,680 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:16:21,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:16:21,688 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:16:21,689 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:16:21,690 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label14.c [2020-10-13 09:16:21,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63cf0217f/d43c0684513a4dbb8fa7ad33f437786d/FLAG137c4c116 [2020-10-13 09:16:22,407 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:16:22,408 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label14.c [2020-10-13 09:16:22,426 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63cf0217f/d43c0684513a4dbb8fa7ad33f437786d/FLAG137c4c116 [2020-10-13 09:16:22,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63cf0217f/d43c0684513a4dbb8fa7ad33f437786d [2020-10-13 09:16:22,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:16:22,586 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:16:22,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:16:22,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:16:22,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:16:22,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:22" (1/1) ... [2020-10-13 09:16:22,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77dd261d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:22, skipping insertion in model container [2020-10-13 09:16:22,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:22" (1/1) ... [2020-10-13 09:16:22,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:16:22,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:16:23,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:16:23,526 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:16:23,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:16:23,808 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:16:23,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:23 WrapperNode [2020-10-13 09:16:23,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:16:23,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:16:23,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:16:23,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:16:23,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:23" (1/1) ... [2020-10-13 09:16:23,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:23" (1/1) ... [2020-10-13 09:16:23,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:23" (1/1) ... [2020-10-13 09:16:23,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:23" (1/1) ... [2020-10-13 09:16:23,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:23" (1/1) ... [2020-10-13 09:16:23,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:23" (1/1) ... [2020-10-13 09:16:23,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:23" (1/1) ... [2020-10-13 09:16:23,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:16:23,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:16:23,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:16:23,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:16:23,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:23" (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 09:16:24,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:16:24,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:16:24,047 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:16:24,047 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:16:24,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:16:24,048 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:16:24,048 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:16:24,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:16:24,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:16:24,049 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:16:24,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:16:24,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:16:24,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:16:28,586 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:16:28,586 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:16:28,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:28 BoogieIcfgContainer [2020-10-13 09:16:28,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:16:28,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:16:28,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:16:28,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:16:28,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:16:22" (1/3) ... [2020-10-13 09:16:28,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6bc557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:28, skipping insertion in model container [2020-10-13 09:16:28,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:23" (2/3) ... [2020-10-13 09:16:28,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6bc557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:28, skipping insertion in model container [2020-10-13 09:16:28,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:28" (3/3) ... [2020-10-13 09:16:28,610 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label14.c [2020-10-13 09:16:28,620 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:16:28,631 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:16:28,645 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:16:28,673 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:16:28,673 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:16:28,673 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:16:28,673 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:16:28,673 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:16:28,674 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:16:28,674 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:16:28,674 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:16:28,713 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-13 09:16:28,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 09:16:28,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:16:28,721 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] [2020-10-13 09:16:28,722 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:16:28,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:16:28,726 INFO L82 PathProgramCache]: Analyzing trace with hash 986645765, now seen corresponding path program 1 times [2020-10-13 09:16:28,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:16:28,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214137435] [2020-10-13 09:16:28,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:16:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:28,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:29,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:29,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 09:16:29,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:29,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-13 09:16:29,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:29,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:16:29,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:16:29,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:16:29,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:16:29,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:16:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:29,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:29,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:29,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:16:29,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:29,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:16:29,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:29,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:16:29,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:29,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:16:29,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:29,265 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 09:16:29,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214137435] [2020-10-13 09:16:29,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:16:29,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:16:29,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595414488] [2020-10-13 09:16:29,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:16:29,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:16:29,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:16:29,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:16:29,291 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 4 states. [2020-10-13 09:16:32,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:16:32,974 INFO L93 Difference]: Finished difference Result 1169 states and 2164 transitions. [2020-10-13 09:16:32,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:16:32,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-13 09:16:32,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:16:32,996 INFO L225 Difference]: With dead ends: 1169 [2020-10-13 09:16:32,996 INFO L226 Difference]: Without dead ends: 696 [2020-10-13 09:16:33,008 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 09:16:33,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-13 09:16:33,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 692. [2020-10-13 09:16:33,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-13 09:16:33,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1014 transitions. [2020-10-13 09:16:33,103 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1014 transitions. Word has length 24 [2020-10-13 09:16:33,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:16:33,103 INFO L479 AbstractCegarLoop]: Abstraction has 692 states and 1014 transitions. [2020-10-13 09:16:33,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:16:33,104 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1014 transitions. [2020-10-13 09:16:33,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 09:16:33,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:16:33,109 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:16:33,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:16:33,110 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:16:33,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:16:33,110 INFO L82 PathProgramCache]: Analyzing trace with hash 887156664, now seen corresponding path program 1 times [2020-10-13 09:16:33,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:16:33,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133247905] [2020-10-13 09:16:33,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:16:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:33,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:33,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:34,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:34,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 09:16:34,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:16:34,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 923 [2020-10-13 09:16:34,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:34,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:34,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 09:16:34,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:16:34,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:16:34,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:16:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:34,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:34,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:34,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:16:34,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:34,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:16:34,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:34,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:34,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:34,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:34,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:34,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:16:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:34,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:34,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:34,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:16:34,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:34,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 09:16:34,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:16:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:16:34,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:16:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:16:34,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133247905] [2020-10-13 09:16:34,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:16:34,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:16:34,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838688179] [2020-10-13 09:16:34,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:16:34,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:16:34,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:16:34,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:16:34,330 INFO L87 Difference]: Start difference. First operand 692 states and 1014 transitions. Second operand 6 states. [2020-10-13 09:16:39,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:16:39,446 INFO L93 Difference]: Finished difference Result 2744 states and 4081 transitions. [2020-10-13 09:16:39,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:16:39,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-10-13 09:16:39,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:16:39,462 INFO L225 Difference]: With dead ends: 2744 [2020-10-13 09:16:39,462 INFO L226 Difference]: Without dead ends: 2058 [2020-10-13 09:16:39,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:16:39,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2020-10-13 09:16:39,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 2054. [2020-10-13 09:16:39,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2054 states. [2020-10-13 09:16:39,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2783 transitions. [2020-10-13 09:16:39,564 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2783 transitions. Word has length 100 [2020-10-13 09:16:39,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:16:39,565 INFO L479 AbstractCegarLoop]: Abstraction has 2054 states and 2783 transitions. [2020-10-13 09:16:39,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:16:39,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2783 transitions. [2020-10-13 09:16:39,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-13 09:16:39,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:16:39,580 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:16:39,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:16:39,581 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:16:39,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:16:39,583 INFO L82 PathProgramCache]: Analyzing trace with hash 37443821, now seen corresponding path program 1 times [2020-10-13 09:16:39,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:16:39,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427409250] [2020-10-13 09:16:39,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:16:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:39,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:39,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:40,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:40,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:41,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:41,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-13 09:16:41,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:16:41,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1798 [2020-10-13 09:16:41,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:41,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:41,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 238 [2020-10-13 09:16:41,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:16:41,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:41,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:16:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:41,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:41,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:41,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:16:41,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:41,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:16:41,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:41,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:41,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:41,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:41,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:41,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:16:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:41,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:41,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:41,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:16:41,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:41,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:16:41,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:41,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:41,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:41,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:41,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:41,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:16:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:41,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:41,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:41,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:16:41,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:41,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 09:16:41,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:41,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:16:41,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:41,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 09:16:41,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-13 09:16:41,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427409250] [2020-10-13 09:16:41,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:16:41,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:16:41,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680802637] [2020-10-13 09:16:41,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:16:41,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:16:41,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:16:41,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:16:41,920 INFO L87 Difference]: Start difference. First operand 2054 states and 2783 transitions. Second operand 5 states. [2020-10-13 09:16:46,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:16:46,253 INFO L93 Difference]: Finished difference Result 5126 states and 7227 transitions. [2020-10-13 09:16:46,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:16:46,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2020-10-13 09:16:46,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:16:46,279 INFO L225 Difference]: With dead ends: 5126 [2020-10-13 09:16:46,279 INFO L226 Difference]: Without dead ends: 3078 [2020-10-13 09:16:46,284 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 09:16:46,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2020-10-13 09:16:46,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 3074. [2020-10-13 09:16:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3074 states. [2020-10-13 09:16:46,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3074 states to 3074 states and 3990 transitions. [2020-10-13 09:16:46,369 INFO L78 Accepts]: Start accepts. Automaton has 3074 states and 3990 transitions. Word has length 250 [2020-10-13 09:16:46,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:16:46,373 INFO L479 AbstractCegarLoop]: Abstraction has 3074 states and 3990 transitions. [2020-10-13 09:16:46,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:16:46,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3074 states and 3990 transitions. [2020-10-13 09:16:46,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-13 09:16:46,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:16:46,384 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-13 09:16:46,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:16:46,384 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:16:46,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:16:46,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1373085931, now seen corresponding path program 1 times [2020-10-13 09:16:46,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:16:46,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996401227] [2020-10-13 09:16:46,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:16:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:46,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:46,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:46,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:46,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:50,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:50,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:51,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:51,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-13 09:16:51,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:16:51,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 09:16:51,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:51,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:51,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 293 [2020-10-13 09:16:51,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:16:51,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:51,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:16:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:51,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:51,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:51,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:16:51,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:51,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:16:51,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:51,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:51,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:51,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:51,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:16:51,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:16:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:51,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:51,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:51,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:16:51,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:51,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:16:51,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:51,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:51,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:51,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:16:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:51,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:51,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:51,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:16:51,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:51,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:16:51,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:51,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:51,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:16:51,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-13 09:16:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:51,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:51,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:51,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 09:16:51,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:51,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:16:51,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:51,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:16:51,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:51,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:16:51,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:51,874 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2020-10-13 09:16:51,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996401227] [2020-10-13 09:16:51,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:16:51,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:16:51,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097247444] [2020-10-13 09:16:51,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:16:51,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:16:51,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:16:51,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:16:51,877 INFO L87 Difference]: Start difference. First operand 3074 states and 3990 transitions. Second operand 5 states. [2020-10-13 09:16:55,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:16:55,592 INFO L93 Difference]: Finished difference Result 7172 states and 9672 transitions. [2020-10-13 09:16:55,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:16:55,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 303 [2020-10-13 09:16:55,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:16:55,612 INFO L225 Difference]: With dead ends: 7172 [2020-10-13 09:16:55,613 INFO L226 Difference]: Without dead ends: 4104 [2020-10-13 09:16:55,619 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 09:16:55,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4104 states. [2020-10-13 09:16:55,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4104 to 3760. [2020-10-13 09:16:55,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3760 states. [2020-10-13 09:16:55,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 4751 transitions. [2020-10-13 09:16:55,708 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 4751 transitions. Word has length 303 [2020-10-13 09:16:55,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:16:55,709 INFO L479 AbstractCegarLoop]: Abstraction has 3760 states and 4751 transitions. [2020-10-13 09:16:55,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:16:55,710 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 4751 transitions. [2020-10-13 09:16:55,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-13 09:16:55,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:16:55,717 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:16:55,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:16:55,718 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:16:55,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:16:55,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1553458708, now seen corresponding path program 1 times [2020-10-13 09:16:55,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:16:55,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240940032] [2020-10-13 09:16:55,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:16:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:55,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:56,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:56,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:57,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:57,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-13 09:16:57,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:16:57,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1266 [2020-10-13 09:16:57,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:57,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:57,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 09:16:57,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:16:57,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:57,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:16:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:57,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:57,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:57,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:16:57,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:57,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:16:57,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:57,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:57,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:57,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:57,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:57,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:16:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:57,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:57,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:57,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:16:57,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:57,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 09:16:57,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:57,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:16:57,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:57,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:16:57,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:57,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:16:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:57,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:57,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:57,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:57,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:16:57,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:16:57,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-13 09:16:57,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:57,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:57,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:16:57,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-13 09:16:57,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:16:58,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240940032] [2020-10-13 09:16:58,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:16:58,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:16:58,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796331501] [2020-10-13 09:16:58,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:16:58,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:16:58,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:16:58,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:16:58,186 INFO L87 Difference]: Start difference. First operand 3760 states and 4751 transitions. Second operand 7 states. [2020-10-13 09:17:03,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:03,690 INFO L93 Difference]: Finished difference Result 9387 states and 12415 transitions. [2020-10-13 09:17:03,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:17:03,691 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2020-10-13 09:17:03,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:03,717 INFO L225 Difference]: With dead ends: 9387 [2020-10-13 09:17:03,717 INFO L226 Difference]: Without dead ends: 5556 [2020-10-13 09:17:03,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:17:03,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5556 states. [2020-10-13 09:17:03,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5556 to 5552. [2020-10-13 09:17:03,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5552 states. [2020-10-13 09:17:03,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5552 states to 5552 states and 6931 transitions. [2020-10-13 09:17:03,878 INFO L78 Accepts]: Start accepts. Automaton has 5552 states and 6931 transitions. Word has length 313 [2020-10-13 09:17:03,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:03,879 INFO L479 AbstractCegarLoop]: Abstraction has 5552 states and 6931 transitions. [2020-10-13 09:17:03,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:17:03,879 INFO L276 IsEmpty]: Start isEmpty. Operand 5552 states and 6931 transitions. [2020-10-13 09:17:03,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-13 09:17:03,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:03,890 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 09:17:03,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:17:03,891 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:03,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:03,891 INFO L82 PathProgramCache]: Analyzing trace with hash 310724547, now seen corresponding path program 1 times [2020-10-13 09:17:03,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:03,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287373923] [2020-10-13 09:17:03,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:03,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:04,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:05,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:06,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:07,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:07,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 400 [2020-10-13 09:17:07,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:17:07,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3237 [2020-10-13 09:17:07,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-13 09:17:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:17:07,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:07,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:07,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:07,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:07,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:07,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:07,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:17:07,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:07,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:07,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:07,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:07,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:17:07,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:07,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:07,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:07,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 09:17:07,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:07,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-13 09:17:07,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:07,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:07,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:07,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-13 09:17:07,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:17:07,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-13 09:17:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:07,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:07,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:08,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:08,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:17:08,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:17:08,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-13 09:17:08,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:08,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:08,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:17:08,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-13 09:17:08,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:17:08,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287373923] [2020-10-13 09:17:08,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:08,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:17:08,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241131196] [2020-10-13 09:17:08,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:17:08,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:08,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:17:08,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:17:08,433 INFO L87 Difference]: Start difference. First operand 5552 states and 6931 transitions. Second operand 7 states. [2020-10-13 09:17:11,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:11,617 INFO L93 Difference]: Finished difference Result 11242 states and 14306 transitions. [2020-10-13 09:17:11,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:17:11,618 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 388 [2020-10-13 09:17:11,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:11,646 INFO L225 Difference]: With dead ends: 11242 [2020-10-13 09:17:11,647 INFO L226 Difference]: Without dead ends: 5619 [2020-10-13 09:17:11,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:17:11,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5619 states. [2020-10-13 09:17:11,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5619 to 5551. [2020-10-13 09:17:11,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5551 states. [2020-10-13 09:17:11,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5551 states to 5551 states and 6602 transitions. [2020-10-13 09:17:11,821 INFO L78 Accepts]: Start accepts. Automaton has 5551 states and 6602 transitions. Word has length 388 [2020-10-13 09:17:11,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:11,822 INFO L479 AbstractCegarLoop]: Abstraction has 5551 states and 6602 transitions. [2020-10-13 09:17:11,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:17:11,822 INFO L276 IsEmpty]: Start isEmpty. Operand 5551 states and 6602 transitions. [2020-10-13 09:17:11,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2020-10-13 09:17:11,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:11,838 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:17:11,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:17:11,839 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:11,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:11,839 INFO L82 PathProgramCache]: Analyzing trace with hash 481676447, now seen corresponding path program 1 times [2020-10-13 09:17:11,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:11,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867015555] [2020-10-13 09:17:11,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:11,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:12,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:12,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:12,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:13,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:17,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:17,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 498 [2020-10-13 09:17:17,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:17:17,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-13 09:17:17,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:17,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:17:17,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-13 09:17:17,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:17:17,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:17,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:17,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:17,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:17,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:17,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:17,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:17:17,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:17,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:17,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:17:17,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:17,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:17,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:17,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-13 09:17:17,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:17,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-13 09:17:17,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 259 [2020-10-13 09:17:17,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:17,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-10-13 09:17:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:17,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:17,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:18,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:18,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:17:18,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:17:18,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-10-13 09:17:18,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:17:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-13 09:17:18,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:18,314 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:17:18,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867015555] [2020-10-13 09:17:18,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:18,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:17:18,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310487349] [2020-10-13 09:17:18,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:17:18,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:18,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:17:18,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:17:18,318 INFO L87 Difference]: Start difference. First operand 5551 states and 6602 transitions. Second operand 7 states. [2020-10-13 09:17:21,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:21,565 INFO L93 Difference]: Finished difference Result 9752 states and 11508 transitions. [2020-10-13 09:17:21,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:17:21,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 486 [2020-10-13 09:17:21,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:21,585 INFO L225 Difference]: With dead ends: 9752 [2020-10-13 09:17:21,585 INFO L226 Difference]: Without dead ends: 3859 [2020-10-13 09:17:21,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:17:21,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3859 states. [2020-10-13 09:17:21,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3859 to 3807. [2020-10-13 09:17:21,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3807 states. [2020-10-13 09:17:21,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 4280 transitions. [2020-10-13 09:17:21,680 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 4280 transitions. Word has length 486 [2020-10-13 09:17:21,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:21,680 INFO L479 AbstractCegarLoop]: Abstraction has 3807 states and 4280 transitions. [2020-10-13 09:17:21,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:17:21,681 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 4280 transitions. [2020-10-13 09:17:21,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2020-10-13 09:17:21,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:21,696 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-13 09:17:21,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:17:21,696 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:21,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:21,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1858348141, now seen corresponding path program 1 times [2020-10-13 09:17:21,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:21,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709312200] [2020-10-13 09:17:21,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:21,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:21,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:21,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:25,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:25,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:26,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:26,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 526 [2020-10-13 09:17:26,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:17:26,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 09:17:26,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:26,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:26,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 502 [2020-10-13 09:17:26,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:17:26,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:26,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:26,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:26,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:26,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:26,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:26,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:17:26,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:26,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:26,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:26,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:26,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:26,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:26,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:26,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:26,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:17:26,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:26,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:17:26,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:26,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:26,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:26,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 09:17:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:26,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:26,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:26,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:17:26,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:26,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:17:26,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:26,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:26,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:26,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:26,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:27,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-13 09:17:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:27,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:27,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:27,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:17:27,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:27,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:17:27,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:27,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:27,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:27,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:27,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-13 09:17:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:27,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:27,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:27,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:17:27,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:27,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-13 09:17:27,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-13 09:17:27,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:27,369 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2020-10-13 09:17:27,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709312200] [2020-10-13 09:17:27,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:27,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:17:27,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714671089] [2020-10-13 09:17:27,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:17:27,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:27,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:17:27,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:17:27,371 INFO L87 Difference]: Start difference. First operand 3807 states and 4280 transitions. Second operand 6 states. [2020-10-13 09:17:29,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:29,912 INFO L93 Difference]: Finished difference Result 9310 states and 10700 transitions. [2020-10-13 09:17:29,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:17:29,913 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 510 [2020-10-13 09:17:29,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:29,950 INFO L225 Difference]: With dead ends: 9310 [2020-10-13 09:17:29,950 INFO L226 Difference]: Without dead ends: 5509 [2020-10-13 09:17:29,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:17:29,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5509 states. [2020-10-13 09:17:30,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5509 to 4824. [2020-10-13 09:17:30,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4824 states. [2020-10-13 09:17:30,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4824 states to 4824 states and 5542 transitions. [2020-10-13 09:17:30,065 INFO L78 Accepts]: Start accepts. Automaton has 4824 states and 5542 transitions. Word has length 510 [2020-10-13 09:17:30,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:30,066 INFO L479 AbstractCegarLoop]: Abstraction has 4824 states and 5542 transitions. [2020-10-13 09:17:30,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:17:30,066 INFO L276 IsEmpty]: Start isEmpty. Operand 4824 states and 5542 transitions. [2020-10-13 09:17:30,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2020-10-13 09:17:30,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:30,081 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-13 09:17:30,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:17:30,081 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:30,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:30,082 INFO L82 PathProgramCache]: Analyzing trace with hash -492521814, now seen corresponding path program 1 times [2020-10-13 09:17:30,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:30,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737373246] [2020-10-13 09:17:30,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:30,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:30,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:30,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:33,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:33,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:35,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:35,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 557 [2020-10-13 09:17:35,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:17:35,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 09:17:35,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:35,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:35,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 533 [2020-10-13 09:17:35,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:17:35,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:35,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:35,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:35,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:35,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:35,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:35,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:17:35,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:35,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:35,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:35,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:35,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:35,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:35,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:17:35,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:35,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:17:35,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:35,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:35,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:35,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:35,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:35,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 09:17:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:35,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:35,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:35,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:17:35,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:35,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:17:35,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:35,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:17:35,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-13 09:17:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:35,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:35,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:35,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:17:35,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:35,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 09:17:35,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:35,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:35,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:35,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:35,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:35,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-13 09:17:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:35,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:35,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:35,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 09:17:35,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:35,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:17:35,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-13 09:17:35,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:35,632 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2020-10-13 09:17:35,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737373246] [2020-10-13 09:17:35,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:35,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:17:35,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978940712] [2020-10-13 09:17:35,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:17:35,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:35,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:17:35,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:17:35,635 INFO L87 Difference]: Start difference. First operand 4824 states and 5542 transitions. Second operand 5 states. [2020-10-13 09:17:38,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:38,006 INFO L93 Difference]: Finished difference Result 11341 states and 13360 transitions. [2020-10-13 09:17:38,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:17:38,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 541 [2020-10-13 09:17:38,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:38,027 INFO L225 Difference]: With dead ends: 11341 [2020-10-13 09:17:38,028 INFO L226 Difference]: Without dead ends: 6523 [2020-10-13 09:17:38,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 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 09:17:38,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6523 states. [2020-10-13 09:17:38,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6523 to 6517. [2020-10-13 09:17:38,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6517 states. [2020-10-13 09:17:38,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6517 states to 6517 states and 7690 transitions. [2020-10-13 09:17:38,147 INFO L78 Accepts]: Start accepts. Automaton has 6517 states and 7690 transitions. Word has length 541 [2020-10-13 09:17:38,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:38,148 INFO L479 AbstractCegarLoop]: Abstraction has 6517 states and 7690 transitions. [2020-10-13 09:17:38,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:17:38,148 INFO L276 IsEmpty]: Start isEmpty. Operand 6517 states and 7690 transitions. [2020-10-13 09:17:38,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2020-10-13 09:17:38,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:38,160 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:17:38,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:17:38,160 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:38,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:38,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1625670563, now seen corresponding path program 1 times [2020-10-13 09:17:38,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:38,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249955356] [2020-10-13 09:17:38,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:38,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:38,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:38,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:42,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:43,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:43,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 582 [2020-10-13 09:17:43,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:17:43,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 09:17:43,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:43,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:17:43,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:17:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:17:43,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:43,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:43,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:43,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:43,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:43,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:43,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:17:43,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:43,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:43,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:43,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:17:43,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:43,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:43,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:43,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:43,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:17:43,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:43,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:17:43,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:43,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:43,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:17:43,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 09:17:43,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:43,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 09:17:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:43,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:43,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:43,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:17:43,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:43,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 09:17:43,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:43,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:43,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 09:17:43,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:43,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:43,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-13 09:17:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:43,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:43,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:43,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:17:43,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:43,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:17:43,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:17:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:43,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:43,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-13 09:17:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:43,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:43,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:43,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:17:43,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:43,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 09:17:43,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-13 09:17:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:43,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 68 proven. 285 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2020-10-13 09:17:43,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249955356] [2020-10-13 09:17:43,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:43,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:17:43,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860133850] [2020-10-13 09:17:43,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:17:43,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:43,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:17:43,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:17:43,834 INFO L87 Difference]: Start difference. First operand 6517 states and 7690 transitions. Second operand 7 states. [2020-10-13 09:17:47,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:47,010 INFO L93 Difference]: Finished difference Result 18848 states and 22629 transitions. [2020-10-13 09:17:47,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:17:47,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 566 [2020-10-13 09:17:47,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:47,048 INFO L225 Difference]: With dead ends: 18848 [2020-10-13 09:17:47,048 INFO L226 Difference]: Without dead ends: 12337 [2020-10-13 09:17:47,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:17:47,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12337 states. [2020-10-13 09:17:47,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12337 to 11992. [2020-10-13 09:17:47,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11992 states. [2020-10-13 09:17:47,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11992 states to 11992 states and 14253 transitions. [2020-10-13 09:17:47,269 INFO L78 Accepts]: Start accepts. Automaton has 11992 states and 14253 transitions. Word has length 566 [2020-10-13 09:17:47,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:47,270 INFO L479 AbstractCegarLoop]: Abstraction has 11992 states and 14253 transitions. [2020-10-13 09:17:47,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:17:47,270 INFO L276 IsEmpty]: Start isEmpty. Operand 11992 states and 14253 transitions. [2020-10-13 09:17:47,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-10-13 09:17:47,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:47,285 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:17:47,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:17:47,285 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:47,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:47,286 INFO L82 PathProgramCache]: Analyzing trace with hash -937114160, now seen corresponding path program 1 times [2020-10-13 09:17:47,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:47,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110392686] [2020-10-13 09:17:47,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:47,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:47,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:48,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:49,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:52,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:52,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 600 [2020-10-13 09:17:52,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:17:52,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 09:17:52,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:52,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:52,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:17:52,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 09:17:52,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:52,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:52,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:52,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:52,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:52,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:52,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:17:52,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:52,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:52,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:52,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:52,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:52,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:52,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:17:52,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:52,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 09:17:52,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:52,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:17:52,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:52,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:17:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:52,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:52,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:52,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:17:52,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:52,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 09:17:52,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:52,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:52,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:17:52,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 09:17:52,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:52,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-13 09:17:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:52,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:52,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:52,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:17:52,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:52,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 09:17:52,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:52,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-13 09:17:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:52,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 167 proven. 114 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2020-10-13 09:17:53,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110392686] [2020-10-13 09:17:53,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:53,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:17:53,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665554816] [2020-10-13 09:17:53,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:17:53,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:53,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:17:53,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:17:53,075 INFO L87 Difference]: Start difference. First operand 11992 states and 14253 transitions. Second operand 8 states. [2020-10-13 09:17:57,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:57,447 INFO L93 Difference]: Finished difference Result 28401 states and 34172 transitions. [2020-10-13 09:17:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 09:17:57,447 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 586 [2020-10-13 09:17:57,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:57,495 INFO L225 Difference]: With dead ends: 28401 [2020-10-13 09:17:57,495 INFO L226 Difference]: Without dead ends: 16752 [2020-10-13 09:17:57,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 09:17:57,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16752 states. [2020-10-13 09:17:57,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16752 to 16068. [2020-10-13 09:17:57,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16068 states. [2020-10-13 09:17:57,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16068 states to 16068 states and 19057 transitions. [2020-10-13 09:17:57,797 INFO L78 Accepts]: Start accepts. Automaton has 16068 states and 19057 transitions. Word has length 586 [2020-10-13 09:17:57,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:57,797 INFO L479 AbstractCegarLoop]: Abstraction has 16068 states and 19057 transitions. [2020-10-13 09:17:57,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:17:57,798 INFO L276 IsEmpty]: Start isEmpty. Operand 16068 states and 19057 transitions. [2020-10-13 09:17:57,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2020-10-13 09:17:57,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:57,816 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:17:57,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:17:57,817 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:57,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:57,817 INFO L82 PathProgramCache]: Analyzing trace with hash -418050351, now seen corresponding path program 1 times [2020-10-13 09:17:57,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:57,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557264388] [2020-10-13 09:17:57,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:57,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:58,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:58,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:58,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:02,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:02,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 672 [2020-10-13 09:18:02,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:18:02,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 09:18:02,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:02,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:02,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:18:02,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:18:02,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:03,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:03,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:03,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:03,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:03,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:03,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:18:03,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:03,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:03,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:03,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:03,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:03,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:18:03,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:03,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:18:03,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:03,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:03,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:03,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:18:03,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:03,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:18:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:03,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:03,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:03,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:18:03,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:03,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 09:18:03,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:18:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:18:03,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:03,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-13 09:18:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:03,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:03,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:03,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:18:03,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:03,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 09:18:03,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:18:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:03,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:03,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-13 09:18:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:03,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:03,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:03,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:18:03,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:03,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 09:18:03,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:03,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:03,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-13 09:18:03,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:03,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 143 proven. 136 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2020-10-13 09:18:03,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557264388] [2020-10-13 09:18:03,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:03,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:18:03,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413452978] [2020-10-13 09:18:03,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:18:03,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:03,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:18:03,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:18:03,708 INFO L87 Difference]: Start difference. First operand 16068 states and 19057 transitions. Second operand 7 states. [2020-10-13 09:18:07,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:07,465 INFO L93 Difference]: Finished difference Result 35758 states and 44165 transitions. [2020-10-13 09:18:07,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:18:07,466 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 656 [2020-10-13 09:18:07,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:07,535 INFO L225 Difference]: With dead ends: 35758 [2020-10-13 09:18:07,536 INFO L226 Difference]: Without dead ends: 20033 [2020-10-13 09:18:07,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:18:07,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20033 states. [2020-10-13 09:18:07,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20033 to 19460. [2020-10-13 09:18:07,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19460 states. [2020-10-13 09:18:07,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19460 states to 19460 states and 22765 transitions. [2020-10-13 09:18:07,996 INFO L78 Accepts]: Start accepts. Automaton has 19460 states and 22765 transitions. Word has length 656 [2020-10-13 09:18:07,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:07,997 INFO L479 AbstractCegarLoop]: Abstraction has 19460 states and 22765 transitions. [2020-10-13 09:18:07,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:18:07,998 INFO L276 IsEmpty]: Start isEmpty. Operand 19460 states and 22765 transitions. [2020-10-13 09:18:08,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2020-10-13 09:18:08,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:08,020 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:18:08,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:18:08,021 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:08,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:08,021 INFO L82 PathProgramCache]: Analyzing trace with hash -338321821, now seen corresponding path program 1 times [2020-10-13 09:18:08,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:08,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965608781] [2020-10-13 09:18:08,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:08,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:08,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:08,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:09,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:13,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:13,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 726 [2020-10-13 09:18:13,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:18:13,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-13 09:18:13,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:13,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:13,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:18:13,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 09:18:13,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:13,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:13,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:13,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:13,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:13,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:13,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:18:13,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:13,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:13,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:13,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:13,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:13,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:13,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:13,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:13,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:18:13,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:13,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 09:18:13,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:13,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:13,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:13,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:18:13,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:13,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:18:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:13,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:13,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:13,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:18:13,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:13,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:18:13,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:18:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 09:18:13,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:13,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-13 09:18:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:13,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:13,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:13,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:18:13,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:13,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:18:13,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:13,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:13,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-13 09:18:13,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:13,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:13,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-10-13 09:18:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:13,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:13,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:13,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:18:13,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:13,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:18:13,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:13,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:13,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-13 09:18:13,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:13,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:14,190 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 168 proven. 186 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2020-10-13 09:18:14,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965608781] [2020-10-13 09:18:14,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:14,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:18:14,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850194172] [2020-10-13 09:18:14,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:18:14,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:14,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:18:14,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:18:14,192 INFO L87 Difference]: Start difference. First operand 19460 states and 22765 transitions. Second operand 7 states. [2020-10-13 09:18:17,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:17,508 INFO L93 Difference]: Finished difference Result 40608 states and 47610 transitions. [2020-10-13 09:18:17,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:18:17,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 710 [2020-10-13 09:18:17,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:17,555 INFO L225 Difference]: With dead ends: 40608 [2020-10-13 09:18:17,555 INFO L226 Difference]: Without dead ends: 21491 [2020-10-13 09:18:17,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:18:17,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21491 states. [2020-10-13 09:18:17,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21491 to 21489. [2020-10-13 09:18:17,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21489 states. [2020-10-13 09:18:17,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21489 states to 21489 states and 24742 transitions. [2020-10-13 09:18:17,905 INFO L78 Accepts]: Start accepts. Automaton has 21489 states and 24742 transitions. Word has length 710 [2020-10-13 09:18:17,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:17,906 INFO L479 AbstractCegarLoop]: Abstraction has 21489 states and 24742 transitions. [2020-10-13 09:18:17,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:18:17,906 INFO L276 IsEmpty]: Start isEmpty. Operand 21489 states and 24742 transitions. [2020-10-13 09:18:17,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2020-10-13 09:18:17,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:17,936 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:17,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:18:17,937 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:17,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:17,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1199182482, now seen corresponding path program 1 times [2020-10-13 09:18:17,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:17,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666373634] [2020-10-13 09:18:17,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:18,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:18,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:18,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:18,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:23,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:23,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 835 [2020-10-13 09:18:23,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:18:23,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 09:18:23,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:23,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:18:23,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 611 [2020-10-13 09:18:23,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 09:18:23,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:23,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:23,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:23,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:23,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:23,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:23,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:18:23,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:23,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:23,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:23,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:23,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:23,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:23,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:23,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:23,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:18:23,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:23,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:18:23,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:23,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:23,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:23,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:23,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:23,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:18:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:23,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:23,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:23,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:18:23,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:23,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:18:23,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:23,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:23,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-13 09:18:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:23,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:23,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:23,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:18:23,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:23,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:18:23,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:23,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:23,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:23,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:18:23,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:23,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 605 [2020-10-13 09:18:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:23,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:23,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:23,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:23,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:18:23,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:18:23,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-13 09:18:23,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:18:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-13 09:18:23,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:24,683 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 537 proven. 2 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2020-10-13 09:18:24,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666373634] [2020-10-13 09:18:24,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:24,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:18:24,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562702554] [2020-10-13 09:18:24,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:18:24,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:24,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:18:24,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:18:24,685 INFO L87 Difference]: Start difference. First operand 21489 states and 24742 transitions. Second operand 7 states. [2020-10-13 09:18:28,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:28,024 INFO L93 Difference]: Finished difference Result 43722 states and 50571 transitions. [2020-10-13 09:18:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:18:28,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 819 [2020-10-13 09:18:28,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:28,078 INFO L225 Difference]: With dead ends: 43722 [2020-10-13 09:18:28,078 INFO L226 Difference]: Without dead ends: 21559 [2020-10-13 09:18:28,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:18:28,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21559 states. [2020-10-13 09:18:28,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21559 to 21487. [2020-10-13 09:18:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21487 states. [2020-10-13 09:18:28,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21487 states to 21487 states and 24655 transitions. [2020-10-13 09:18:28,423 INFO L78 Accepts]: Start accepts. Automaton has 21487 states and 24655 transitions. Word has length 819 [2020-10-13 09:18:28,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:28,424 INFO L479 AbstractCegarLoop]: Abstraction has 21487 states and 24655 transitions. [2020-10-13 09:18:28,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:18:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 21487 states and 24655 transitions. [2020-10-13 09:18:28,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 912 [2020-10-13 09:18:28,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:28,462 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:28,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:18:28,463 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:28,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:28,464 INFO L82 PathProgramCache]: Analyzing trace with hash -837547537, now seen corresponding path program 1 times [2020-10-13 09:18:28,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:28,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548214075] [2020-10-13 09:18:28,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:28,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:28,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:28,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:29,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:30,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:31,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:33,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:33,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 929 [2020-10-13 09:18:33,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:18:33,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 09:18:33,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 462 [2020-10-13 09:18:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 09:18:33,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:33,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:33,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:33,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:33,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:33,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:33,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:18:33,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:33,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:33,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:33,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:33,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:33,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:33,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:33,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:33,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:18:33,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:33,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:18:33,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:33,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:33,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:33,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:33,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:33,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:18:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:33,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:33,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:33,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-13 09:18:33,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:33,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:18:33,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:33,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:33,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:33,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-13 09:18:33,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:33,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-10-13 09:18:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:33,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:34,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:34,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:18:34,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:34,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 09:18:34,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:34,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:34,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:18:34,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 09:18:34,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:34,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2020-10-13 09:18:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:34,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:34,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:34,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:18:34,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:34,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 09:18:34,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:34,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:34,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-13 09:18:34,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:34,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:34,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 697 [2020-10-13 09:18:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:34,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:34,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:34,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:18:34,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:34,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:18:34,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:34,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:34,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-13 09:18:34,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:34,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:34,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1494 backedges. 290 proven. 186 refuted. 0 times theorem prover too weak. 1018 trivial. 0 not checked. [2020-10-13 09:18:34,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548214075] [2020-10-13 09:18:34,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:34,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:18:34,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737621086] [2020-10-13 09:18:34,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:18:34,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:34,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:18:34,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:18:34,542 INFO L87 Difference]: Start difference. First operand 21487 states and 24655 transitions. Second operand 7 states. [2020-10-13 09:18:38,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:38,070 INFO L93 Difference]: Finished difference Result 42907 states and 50769 transitions. [2020-10-13 09:18:38,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:18:38,071 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 911 [2020-10-13 09:18:38,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:38,120 INFO L225 Difference]: With dead ends: 42907 [2020-10-13 09:18:38,121 INFO L226 Difference]: Without dead ends: 21763 [2020-10-13 09:18:38,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:18:38,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21763 states. [2020-10-13 09:18:38,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21763 to 21152. [2020-10-13 09:18:38,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21152 states. [2020-10-13 09:18:38,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21152 states to 21152 states and 23747 transitions. [2020-10-13 09:18:38,536 INFO L78 Accepts]: Start accepts. Automaton has 21152 states and 23747 transitions. Word has length 911 [2020-10-13 09:18:38,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:38,537 INFO L479 AbstractCegarLoop]: Abstraction has 21152 states and 23747 transitions. [2020-10-13 09:18:38,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:18:38,537 INFO L276 IsEmpty]: Start isEmpty. Operand 21152 states and 23747 transitions. [2020-10-13 09:18:38,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 918 [2020-10-13 09:18:38,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:38,579 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:38,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:18:38,579 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:38,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:38,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1052536021, now seen corresponding path program 1 times [2020-10-13 09:18:38,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:38,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029097416] [2020-10-13 09:18:38,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:38,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:38,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:39,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:41,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:41,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:43,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:43,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 935 [2020-10-13 09:18:43,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:18:43,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 09:18:43,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:43,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:43,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 711 [2020-10-13 09:18:43,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 09:18:43,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:43,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:43,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:43,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:43,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:43,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:43,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:18:43,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:43,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:43,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:43,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:43,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:43,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:43,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:43,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:43,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:18:43,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:43,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:18:43,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:43,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:43,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:43,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:43,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:43,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:18:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:43,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:44,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:44,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:18:44,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:44,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:18:44,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:44,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:44,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-13 09:18:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:44,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:44,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:44,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:18:44,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:44,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:18:44,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:44,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:44,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:44,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:44,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:44,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-10-13 09:18:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:44,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:44,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:44,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:18:44,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:44,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:18:44,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:44,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:44,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:44,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:18:44,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:44,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 703 [2020-10-13 09:18:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:44,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:44,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:44,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:44,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:18:44,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:18:44,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-13 09:18:44,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:44,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:44,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:18:44,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-13 09:18:44,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:45,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 654 proven. 2 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2020-10-13 09:18:45,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029097416] [2020-10-13 09:18:45,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:45,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:18:45,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109267222] [2020-10-13 09:18:45,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:18:45,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:45,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:18:45,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:18:45,750 INFO L87 Difference]: Start difference. First operand 21152 states and 23747 transitions. Second operand 7 states. [2020-10-13 09:18:47,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:47,834 INFO L93 Difference]: Finished difference Result 41976 states and 47219 transitions. [2020-10-13 09:18:47,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:18:47,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 917 [2020-10-13 09:18:47,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:47,879 INFO L225 Difference]: With dead ends: 41976 [2020-10-13 09:18:47,880 INFO L226 Difference]: Without dead ends: 21159 [2020-10-13 09:18:47,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 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 09:18:47,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21159 states. [2020-10-13 09:18:48,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21159 to 21150. [2020-10-13 09:18:48,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21150 states. [2020-10-13 09:18:48,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21150 states to 21150 states and 23720 transitions. [2020-10-13 09:18:48,193 INFO L78 Accepts]: Start accepts. Automaton has 21150 states and 23720 transitions. Word has length 917 [2020-10-13 09:18:48,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:48,194 INFO L479 AbstractCegarLoop]: Abstraction has 21150 states and 23720 transitions. [2020-10-13 09:18:48,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:18:48,194 INFO L276 IsEmpty]: Start isEmpty. Operand 21150 states and 23720 transitions. [2020-10-13 09:18:48,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2020-10-13 09:18:48,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:48,213 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:48,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:18:48,214 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:48,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:48,214 INFO L82 PathProgramCache]: Analyzing trace with hash 2008274567, now seen corresponding path program 1 times [2020-10-13 09:18:48,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:48,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381769205] [2020-10-13 09:18:48,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:48,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:48,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:51,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:51,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 965 [2020-10-13 09:18:51,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:18:51,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3486 [2020-10-13 09:18:51,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:51,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:51,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-13 09:18:51,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-13 09:18:51,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:51,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:51,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:51,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:51,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:51,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:51,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:18:51,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:51,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:51,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:51,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:51,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:51,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:51,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:52,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:52,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:18:52,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:52,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 09:18:52,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:52,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:52,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:52,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-13 09:18:52,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:52,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:18:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:52,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:52,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:52,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:18:52,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:52,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 09:18:52,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:52,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:52,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:18:52,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 09:18:52,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:52,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:18:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:52,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:52,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:52,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:18:52,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:52,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:18:52,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:52,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:52,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 09:18:52,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:52,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:52,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:18:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:52,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:52,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:52,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:18:52,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:52,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 09:18:52,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:52,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:52,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:18:52,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:52,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:52,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-13 09:18:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:52,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:52,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:52,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:18:52,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:52,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 09:18:52,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:52,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:52,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-13 09:18:52,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:52,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:53,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1675 backedges. 256 proven. 446 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2020-10-13 09:18:53,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381769205] [2020-10-13 09:18:53,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:53,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:18:53,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65383024] [2020-10-13 09:18:53,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:18:53,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:53,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:18:53,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:18:53,646 INFO L87 Difference]: Start difference. First operand 21150 states and 23720 transitions. Second operand 8 states. [2020-10-13 09:18:58,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:58,509 INFO L93 Difference]: Finished difference Result 44665 states and 50058 transitions. [2020-10-13 09:18:58,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 09:18:58,511 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 947 [2020-10-13 09:18:58,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:58,553 INFO L225 Difference]: With dead ends: 44665 [2020-10-13 09:18:58,553 INFO L226 Difference]: Without dead ends: 23858 [2020-10-13 09:18:58,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-13 09:18:58,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23858 states. [2020-10-13 09:18:58,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23858 to 22510. [2020-10-13 09:18:58,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22510 states. [2020-10-13 09:18:58,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22510 states to 22510 states and 24716 transitions. [2020-10-13 09:18:58,850 INFO L78 Accepts]: Start accepts. Automaton has 22510 states and 24716 transitions. Word has length 947 [2020-10-13 09:18:58,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:58,850 INFO L479 AbstractCegarLoop]: Abstraction has 22510 states and 24716 transitions. [2020-10-13 09:18:58,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:18:58,850 INFO L276 IsEmpty]: Start isEmpty. Operand 22510 states and 24716 transitions. [2020-10-13 09:18:58,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2020-10-13 09:18:58,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:58,865 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 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, 1, 1, 1, 1, 1, 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 09:18:58,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:18:58,865 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:58,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:58,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1519482144, now seen corresponding path program 1 times [2020-10-13 09:18:58,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:58,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482875508] [2020-10-13 09:18:58,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:59,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:59,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:02,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:02,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1026 [2020-10-13 09:19:02,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:19:02,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3475 [2020-10-13 09:19:02,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-13 09:19:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 09:19:02,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:02,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:02,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:02,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:02,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:02,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:02,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:19:02,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:02,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:02,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:02,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:02,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:02,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:02,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:02,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:02,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:19:02,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:02,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 09:19:02,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:02,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:02,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:19:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:02,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:02,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:02,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-13 09:19:02,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:02,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:19:02,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:02,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:02,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:02,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-13 09:19:02,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:02,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-13 09:19:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:02,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:02,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:02,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:19:02,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:02,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:19:02,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:02,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:02,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:02,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 09:19:02,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:03,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-13 09:19:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:03,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:03,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:03,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:19:03,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:03,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 09:19:03,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:03,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:03,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:19:03,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:03,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:03,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-13 09:19:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:03,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:03,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:03,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:19:03,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:03,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:19:03,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:03,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:03,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-13 09:19:03,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:03,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:04,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1805 backedges. 358 proven. 254 refuted. 0 times theorem prover too weak. 1193 trivial. 0 not checked. [2020-10-13 09:19:04,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482875508] [2020-10-13 09:19:04,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:04,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:04,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267526449] [2020-10-13 09:19:04,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:04,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:04,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:04,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:04,018 INFO L87 Difference]: Start difference. First operand 22510 states and 24716 transitions. Second operand 7 states. [2020-10-13 09:19:07,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:07,984 INFO L93 Difference]: Finished difference Result 45701 states and 50201 transitions. [2020-10-13 09:19:07,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:19:07,987 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1008 [2020-10-13 09:19:07,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:08,019 INFO L225 Difference]: With dead ends: 45701 [2020-10-13 09:19:08,019 INFO L226 Difference]: Without dead ends: 23534 [2020-10-13 09:19:08,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:19:08,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23534 states. [2020-10-13 09:19:08,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23534 to 22858. [2020-10-13 09:19:08,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22858 states. [2020-10-13 09:19:08,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22858 states to 22858 states and 24976 transitions. [2020-10-13 09:19:08,335 INFO L78 Accepts]: Start accepts. Automaton has 22858 states and 24976 transitions. Word has length 1008 [2020-10-13 09:19:08,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:08,336 INFO L479 AbstractCegarLoop]: Abstraction has 22858 states and 24976 transitions. [2020-10-13 09:19:08,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:08,336 INFO L276 IsEmpty]: Start isEmpty. Operand 22858 states and 24976 transitions. [2020-10-13 09:19:08,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1011 [2020-10-13 09:19:08,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:08,355 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 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, 1, 1, 1, 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 09:19:08,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:19:08,355 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:08,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:08,356 INFO L82 PathProgramCache]: Analyzing trace with hash -372032580, now seen corresponding path program 1 times [2020-10-13 09:19:08,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:08,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000708090] [2020-10-13 09:19:08,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:08,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:08,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:11,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:11,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1028 [2020-10-13 09:19:11,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:19:11,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3369 [2020-10-13 09:19:11,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:11,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:11,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-13 09:19:11,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 09:19:11,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:11,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:11,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:11,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:11,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:11,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:11,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:11,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:11,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:11,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:11,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:12,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:12,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:19:12,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:12,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 09:19:12,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:12,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:12,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:12,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:12,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:12,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:19:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:12,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:12,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:12,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-13 09:19:12,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:12,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 09:19:12,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:12,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:12,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:12,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-13 09:19:12,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:12,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-13 09:19:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:12,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:12,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:12,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:19:12,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:12,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:19:12,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:12,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 09:19:12,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:12,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-13 09:19:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:12,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:12,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:12,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:19:12,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:12,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 09:19:12,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:19:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:12,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:12,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-13 09:19:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:12,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:12,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:12,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:19:12,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:12,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:19:12,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:12,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:12,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-13 09:19:12,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:12,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 358 proven. 254 refuted. 0 times theorem prover too weak. 1195 trivial. 0 not checked. [2020-10-13 09:19:13,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000708090] [2020-10-13 09:19:13,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:13,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:13,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806057385] [2020-10-13 09:19:13,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:13,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:13,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:13,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:13,233 INFO L87 Difference]: Start difference. First operand 22858 states and 24976 transitions. Second operand 7 states. [2020-10-13 09:19:18,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:18,864 INFO L93 Difference]: Finished difference Result 46049 states and 50360 transitions. [2020-10-13 09:19:18,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:19:18,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1010 [2020-10-13 09:19:18,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:18,894 INFO L225 Difference]: With dead ends: 46049 [2020-10-13 09:19:18,894 INFO L226 Difference]: Without dead ends: 23195 [2020-10-13 09:19:18,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:19:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23195 states. [2020-10-13 09:19:19,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23195 to 23195. [2020-10-13 09:19:19,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23195 states. [2020-10-13 09:19:19,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23195 states to 23195 states and 24930 transitions. [2020-10-13 09:19:19,185 INFO L78 Accepts]: Start accepts. Automaton has 23195 states and 24930 transitions. Word has length 1010 [2020-10-13 09:19:19,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:19,185 INFO L479 AbstractCegarLoop]: Abstraction has 23195 states and 24930 transitions. [2020-10-13 09:19:19,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:19,186 INFO L276 IsEmpty]: Start isEmpty. Operand 23195 states and 24930 transitions. [2020-10-13 09:19:19,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1056 [2020-10-13 09:19:19,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:19,205 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:19,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 09:19:19,205 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:19,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:19,206 INFO L82 PathProgramCache]: Analyzing trace with hash 610824058, now seen corresponding path program 1 times [2020-10-13 09:19:19,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:19,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111618390] [2020-10-13 09:19:19,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:19,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:20,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:20,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1075 [2020-10-13 09:19:20,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:20,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 925 [2020-10-13 09:19:20,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:20,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:20,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-13 09:19:20,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-13 09:19:20,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:20,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:20,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:20,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:20,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:20,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:20,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:19:20,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:20,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:20,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:20,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:20,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:20,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:20,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:20,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:20,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:19:20,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:20,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:19:20,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:20,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:20,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:20,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:20,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:20,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:19:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:20,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:20,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:20,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:19:20,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:20,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:19:20,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:20,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:20,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:20,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:20,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:20,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-13 09:19:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:20,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:20,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:20,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:19:20,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:20,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:19:20,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:20,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:20,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-13 09:19:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:20,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:20,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:20,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:19:20,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:20,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:19:20,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:20,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:20,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:20,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:20,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:20,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-13 09:19:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:20,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:20,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:20,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:19:20,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:20,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-13 09:19:20,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:20,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:20,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:20,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-13 09:19:20,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:21,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-13 09:19:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:21,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:21,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:21,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:19:21,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:21,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 09:19:21,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:21,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:21,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-13 09:19:21,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:21,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2192 backedges. 891 proven. 2 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2020-10-13 09:19:21,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111618390] [2020-10-13 09:19:21,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:21,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:21,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423672054] [2020-10-13 09:19:21,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:21,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:21,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:21,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:21,643 INFO L87 Difference]: Start difference. First operand 23195 states and 24930 transitions. Second operand 7 states. [2020-10-13 09:19:26,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:26,237 INFO L93 Difference]: Finished difference Result 48071 states and 51578 transitions. [2020-10-13 09:19:26,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:19:26,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1055 [2020-10-13 09:19:26,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:26,274 INFO L225 Difference]: With dead ends: 48071 [2020-10-13 09:19:26,274 INFO L226 Difference]: Without dead ends: 25219 [2020-10-13 09:19:26,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:19:26,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25219 states. [2020-10-13 09:19:26,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25219 to 21849. [2020-10-13 09:19:26,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21849 states. [2020-10-13 09:19:26,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21849 states to 21849 states and 22906 transitions. [2020-10-13 09:19:26,592 INFO L78 Accepts]: Start accepts. Automaton has 21849 states and 22906 transitions. Word has length 1055 [2020-10-13 09:19:26,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:26,594 INFO L479 AbstractCegarLoop]: Abstraction has 21849 states and 22906 transitions. [2020-10-13 09:19:26,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:26,594 INFO L276 IsEmpty]: Start isEmpty. Operand 21849 states and 22906 transitions. [2020-10-13 09:19:26,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1268 [2020-10-13 09:19:26,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:26,813 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:19:26,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 09:19:26,814 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:26,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:26,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1492575295, now seen corresponding path program 1 times [2020-10-13 09:19:26,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:26,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078414414] [2020-10-13 09:19:26,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:27,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:27,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:28,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:29,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:32,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:32,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1285 [2020-10-13 09:19:32,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:19:32,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-13 09:19:32,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:32,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:32,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1061 [2020-10-13 09:19:32,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-13 09:19:32,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:32,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:32,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:32,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:32,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:32,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:32,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:19:32,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:32,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:32,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:32,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:32,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:32,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:32,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:32,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:32,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:19:32,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:32,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:19:32,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:32,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:32,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:32,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:32,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:32,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:19:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:32,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:32,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:32,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:19:32,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:32,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:19:32,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:32,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:32,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:19:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:32,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:32,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:32,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:19:32,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:32,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:19:32,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:32,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:32,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2020-10-13 09:19:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:32,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:32,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:32,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:19:32,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:32,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 09:19:32,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:32,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:32,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:32,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-13 09:19:32,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:32,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1053 [2020-10-13 09:19:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:32,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:33,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:33,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:19:33,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:33,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 09:19:33,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:33,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:33,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:33,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-13 09:19:33,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2389 backedges. 880 proven. 2 refuted. 0 times theorem prover too weak. 1507 trivial. 0 not checked. [2020-10-13 09:19:34,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078414414] [2020-10-13 09:19:34,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:34,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:19:34,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088276643] [2020-10-13 09:19:34,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:19:34,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:34,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:19:34,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:19:34,106 INFO L87 Difference]: Start difference. First operand 21849 states and 22906 transitions. Second operand 8 states. [2020-10-13 09:19:38,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:38,655 INFO L93 Difference]: Finished difference Result 42679 states and 44774 transitions. [2020-10-13 09:19:38,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 09:19:38,656 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1267 [2020-10-13 09:19:38,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:38,683 INFO L225 Difference]: With dead ends: 42679 [2020-10-13 09:19:38,684 INFO L226 Difference]: Without dead ends: 21512 [2020-10-13 09:19:38,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-13 09:19:38,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21512 states. [2020-10-13 09:19:38,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21512 to 20499. [2020-10-13 09:19:38,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20499 states. [2020-10-13 09:19:38,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20499 states to 20499 states and 21188 transitions. [2020-10-13 09:19:38,900 INFO L78 Accepts]: Start accepts. Automaton has 20499 states and 21188 transitions. Word has length 1267 [2020-10-13 09:19:38,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:38,901 INFO L479 AbstractCegarLoop]: Abstraction has 20499 states and 21188 transitions. [2020-10-13 09:19:38,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:19:38,901 INFO L276 IsEmpty]: Start isEmpty. Operand 20499 states and 21188 transitions. [2020-10-13 09:19:38,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1675 [2020-10-13 09:19:38,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:38,932 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:38,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 09:19:38,933 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:38,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:38,933 INFO L82 PathProgramCache]: Analyzing trace with hash 430870732, now seen corresponding path program 1 times [2020-10-13 09:19:38,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:38,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641292050] [2020-10-13 09:19:38,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:39,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:39,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:39,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:39,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:40,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:44,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:44,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1698 [2020-10-13 09:19:44,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:19:44,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-13 09:19:44,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:44,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:19:44,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1471 [2020-10-13 09:19:44,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 09:19:44,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:44,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:44,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:44,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:44,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:44,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:44,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:19:44,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:44,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:44,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:44,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:44,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:44,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:44,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:44,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:44,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:19:44,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:44,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:19:44,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:44,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:44,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:44,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:44,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:44,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:19:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:44,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:44,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:44,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:19:44,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:44,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:19:44,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:44,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:44,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:44,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:44,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:44,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:19:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:44,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:44,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:44,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:19:44,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:44,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:19:44,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:44,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:44,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2020-10-13 09:19:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:44,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:44,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:44,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:19:44,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:44,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:19:44,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:44,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:44,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1053 [2020-10-13 09:19:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:44,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:44,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:44,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 09:19:44,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:44,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:19:44,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:44,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:44,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:44,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:44,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:44,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1165 [2020-10-13 09:19:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:44,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:44,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:44,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-13 09:19:44,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:44,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 09:19:44,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:44,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:44,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:44,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 289 [2020-10-13 09:19:44,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:44,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:19:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:44,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:44,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:44,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 09:19:44,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:44,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:19:44,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 09:19:44,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:45,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1460 [2020-10-13 09:19:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:45,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:45,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:45,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:45,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:19:45,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:19:45,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-13 09:19:45,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:45,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:45,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:45,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-13 09:19:45,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4338 backedges. 1228 proven. 2 refuted. 0 times theorem prover too weak. 3108 trivial. 0 not checked. [2020-10-13 09:19:46,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641292050] [2020-10-13 09:19:46,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:46,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:46,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923822143] [2020-10-13 09:19:46,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:46,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:46,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:46,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:46,687 INFO L87 Difference]: Start difference. First operand 20499 states and 21188 transitions. Second operand 7 states. [2020-10-13 09:19:51,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:51,089 INFO L93 Difference]: Finished difference Result 39957 states and 41393 transitions. [2020-10-13 09:19:51,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:19:51,091 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1674 [2020-10-13 09:19:51,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:51,118 INFO L225 Difference]: With dead ends: 39957 [2020-10-13 09:19:51,118 INFO L226 Difference]: Without dead ends: 21836 [2020-10-13 09:19:51,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:19:51,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21836 states. [2020-10-13 09:19:51,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21836 to 20825. [2020-10-13 09:19:51,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20825 states. [2020-10-13 09:19:51,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20825 states to 20825 states and 21469 transitions. [2020-10-13 09:19:51,328 INFO L78 Accepts]: Start accepts. Automaton has 20825 states and 21469 transitions. Word has length 1674 [2020-10-13 09:19:51,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:51,330 INFO L479 AbstractCegarLoop]: Abstraction has 20825 states and 21469 transitions. [2020-10-13 09:19:51,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:51,330 INFO L276 IsEmpty]: Start isEmpty. Operand 20825 states and 21469 transitions. [2020-10-13 09:19:51,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1829 [2020-10-13 09:19:51,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:51,376 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:19:51,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 09:19:51,376 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:51,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:51,377 INFO L82 PathProgramCache]: Analyzing trace with hash 430345091, now seen corresponding path program 1 times [2020-10-13 09:19:51,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:51,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393789812] [2020-10-13 09:19:51,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:51,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:51,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:52,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:52,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:52,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:56,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:56,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1852 [2020-10-13 09:19:56,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:19:56,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 09:19:56,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:56,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:56,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1628 [2020-10-13 09:19:56,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-13 09:19:56,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:56,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:56,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:56,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:56,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:56,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:56,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:56,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:56,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:56,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:56,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:56,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:56,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:56,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:56,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:56,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:19:56,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:56,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:19:56,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:56,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:56,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:56,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:56,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:56,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:19:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:56,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:56,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:56,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:19:56,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:56,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:19:56,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:56,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:56,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:19:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:56,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:57,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:57,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:19:57,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:57,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:19:57,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:57,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:57,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2020-10-13 09:19:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:57,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:57,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:57,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:19:57,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:57,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:19:57,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:57,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:57,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:57,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:57,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:57,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1053 [2020-10-13 09:19:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:57,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:57,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:57,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 09:19:57,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:57,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:19:57,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:57,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:57,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:57,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:57,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:57,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1165 [2020-10-13 09:19:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:57,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:57,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:57,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:19:57,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:57,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:19:57,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:57,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:57,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1380 [2020-10-13 09:19:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:57,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:57,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:57,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 09:19:57,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:57,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:19:57,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:57,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:57,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:57,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-13 09:19:57,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:57,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1614 [2020-10-13 09:19:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:57,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:57,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:57,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:19:57,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:57,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 09:19:57,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:57,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:57,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:57,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-13 09:19:57,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5631 backedges. 1445 proven. 2 refuted. 0 times theorem prover too weak. 4184 trivial. 0 not checked. [2020-10-13 09:19:59,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393789812] [2020-10-13 09:19:59,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:59,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:59,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044094870] [2020-10-13 09:19:59,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:59,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:59,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:59,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:59,304 INFO L87 Difference]: Start difference. First operand 20825 states and 21469 transitions. Second operand 7 states.