/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/forester-heap/dll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:21:11,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:21:11,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:21:11,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:21:11,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:21:11,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:21:11,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:21:11,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:21:11,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:21:11,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:21:11,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:21:11,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:21:11,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:21:11,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:21:11,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:21:11,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:21:11,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:21:11,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:21:11,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:21:11,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:21:11,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:21:11,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:21:11,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:21:11,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:21:11,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:21:11,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:21:11,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:21:11,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:21:11,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:21:11,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:21:11,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:21:11,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:21:11,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:21:11,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:21:11,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:21:11,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:21:11,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:21:11,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:21:11,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:21:11,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:21:11,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:21:11,424 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 10:21:11,460 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:21:11,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:21:11,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:21:11,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:21:11,463 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:21:11,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:21:11,464 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:21:11,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:21:11,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:21:11,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:21:11,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:21:11,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:21:11,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:21:11,466 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:21:11,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:21:11,467 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:21:11,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:21:11,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:21:11,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:21:11,468 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:21:11,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:21:11,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:21:11,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:21:11,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:21:11,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:21:11,470 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:21:11,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:21:11,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:21:11,470 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:21:11,470 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 10:21:11,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:21:11,768 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:21:11,772 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:21:11,773 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:21:11,774 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:21:11,775 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-2.i [2020-10-13 10:21:11,835 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a45f969dc/fa79946e58414d0d863c6e7cf2697c8d/FLAG9d10c243f [2020-10-13 10:21:12,383 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:21:12,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-2.i [2020-10-13 10:21:12,398 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a45f969dc/fa79946e58414d0d863c6e7cf2697c8d/FLAG9d10c243f [2020-10-13 10:21:12,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a45f969dc/fa79946e58414d0d863c6e7cf2697c8d [2020-10-13 10:21:12,683 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:21:12,685 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:21:12,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:21:12,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:21:12,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:21:12,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:21:12" (1/1) ... [2020-10-13 10:21:12,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f15c313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:12, skipping insertion in model container [2020-10-13 10:21:12,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:21:12" (1/1) ... [2020-10-13 10:21:12,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:21:12,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:21:13,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:21:13,245 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:21:13,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:21:13,371 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:21:13,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:13 WrapperNode [2020-10-13 10:21:13,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:21:13,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:21:13,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:21:13,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:21:13,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:13" (1/1) ... [2020-10-13 10:21:13,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:13" (1/1) ... [2020-10-13 10:21:13,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:13" (1/1) ... [2020-10-13 10:21:13,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:13" (1/1) ... [2020-10-13 10:21:13,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:13" (1/1) ... [2020-10-13 10:21:13,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:13" (1/1) ... [2020-10-13 10:21:13,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:13" (1/1) ... [2020-10-13 10:21:13,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:21:13,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:21:13,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:21:13,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:21:13,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:13" (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 10:21:13,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:21:13,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:21:13,512 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:21:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:21:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:21:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:21:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:21:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:21:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:21:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:21:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:21:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:21:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:21:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:21:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:21:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:21:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:21:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:21:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:21:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:21:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:21:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:21:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:21:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:21:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:21:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:21:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:21:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:21:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:21:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:21:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:21:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:21:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:21:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:21:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:21:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:21:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:21:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:21:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:21:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:21:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:21:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:21:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:21:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:21:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:21:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:21:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:21:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:21:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:21:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:21:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:21:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:21:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:21:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:21:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:21:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:21:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:21:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:21:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:21:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:21:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:21:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:21:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:21:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:21:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:21:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:21:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:21:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:21:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:21:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:21:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:21:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:21:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:21:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:21:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:21:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:21:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:21:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:21:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:21:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:21:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:21:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:21:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:21:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:21:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:21:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:21:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:21:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:21:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:21:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:21:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:21:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:21:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:21:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:21:13,527 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:21:13,527 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:21:13,527 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:21:13,527 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:21:13,527 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:21:13,527 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:21:13,527 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:21:13,528 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:21:13,528 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:21:13,528 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:21:13,528 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:21:13,528 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:21:13,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:21:13,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:21:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:21:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:21:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:21:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:21:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:21:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:21:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:21:13,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:21:13,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:21:14,145 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:21:14,146 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-10-13 10:21:14,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:21:14 BoogieIcfgContainer [2020-10-13 10:21:14,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:21:14,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:21:14,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:21:14,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:21:14,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:21:12" (1/3) ... [2020-10-13 10:21:14,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e5e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:21:14, skipping insertion in model container [2020-10-13 10:21:14,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:13" (2/3) ... [2020-10-13 10:21:14,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e5e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:21:14, skipping insertion in model container [2020-10-13 10:21:14,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:21:14" (3/3) ... [2020-10-13 10:21:14,159 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-2.i [2020-10-13 10:21:14,171 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:21:14,179 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-13 10:21:14,194 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-13 10:21:14,222 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:21:14,222 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:21:14,222 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:21:14,222 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:21:14,223 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:21:14,223 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:21:14,223 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:21:14,223 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:21:14,244 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-10-13 10:21:14,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-13 10:21:14,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:14,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:14,253 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:14,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:14,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1255802584, now seen corresponding path program 1 times [2020-10-13 10:21:14,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:14,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990239706] [2020-10-13 10:21:14,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:14,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:14,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:14,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:14,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 10:21:14,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:14,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-13 10:21:14,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:14,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:21:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:14,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 10:21:14,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:14,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:14,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:14,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:14,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:14,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 10:21:14,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:14,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:14,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:14,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:14,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:14,871 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 10:21:14,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990239706] [2020-10-13 10:21:14,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:14,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 10:21:14,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217643762] [2020-10-13 10:21:14,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 10:21:14,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:14,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 10:21:14,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:21:14,898 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-10-13 10:21:15,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:15,063 INFO L93 Difference]: Finished difference Result 98 states and 156 transitions. [2020-10-13 10:21:15,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:21:15,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-13 10:21:15,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:15,075 INFO L225 Difference]: With dead ends: 98 [2020-10-13 10:21:15,076 INFO L226 Difference]: Without dead ends: 45 [2020-10-13 10:21:15,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:21:15,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-13 10:21:15,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-13 10:21:15,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 10:21:15,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-10-13 10:21:15,117 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 10 [2020-10-13 10:21:15,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:15,118 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-10-13 10:21:15,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 10:21:15,118 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-10-13 10:21:15,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-13 10:21:15,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:15,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:15,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:21:15,120 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:15,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:15,121 INFO L82 PathProgramCache]: Analyzing trace with hash -338068956, now seen corresponding path program 1 times [2020-10-13 10:21:15,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:15,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457677973] [2020-10-13 10:21:15,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:15,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:15,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:15,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:21:15,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:15,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 10:21:15,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:21:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:21:15,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:15,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:15,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:15,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:15,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:15,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:15,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:21:15,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:15,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:15,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:15,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:15,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:15,279 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 10:21:15,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457677973] [2020-10-13 10:21:15,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:15,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:15,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905596765] [2020-10-13 10:21:15,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:15,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:15,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:15,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:15,283 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 5 states. [2020-10-13 10:21:15,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:15,457 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-13 10:21:15,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:21:15,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-13 10:21:15,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:15,459 INFO L225 Difference]: With dead ends: 51 [2020-10-13 10:21:15,459 INFO L226 Difference]: Without dead ends: 49 [2020-10-13 10:21:15,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:15,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-13 10:21:15,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-10-13 10:21:15,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 10:21:15,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-10-13 10:21:15,468 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 11 [2020-10-13 10:21:15,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:15,468 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-10-13 10:21:15,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:15,469 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-10-13 10:21:15,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-13 10:21:15,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:15,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:15,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:21:15,470 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:15,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:15,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1890143313, now seen corresponding path program 1 times [2020-10-13 10:21:15,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:15,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787985544] [2020-10-13 10:21:15,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:15,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:15,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:15,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:21:15,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:15,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-13 10:21:15,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:15,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:21:15,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:21:15,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:15,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:15,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:15,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:15,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:15,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:15,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:15,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:21:15,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:15,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:15,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:15,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:15,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:15,753 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 10:21:15,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787985544] [2020-10-13 10:21:15,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:15,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:15,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795011168] [2020-10-13 10:21:15,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:15,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:15,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:15,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:15,756 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 5 states. [2020-10-13 10:21:15,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:15,967 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-10-13 10:21:15,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:21:15,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-13 10:21:15,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:15,968 INFO L225 Difference]: With dead ends: 43 [2020-10-13 10:21:15,969 INFO L226 Difference]: Without dead ends: 41 [2020-10-13 10:21:15,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:15,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-13 10:21:15,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-13 10:21:15,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 10:21:15,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-10-13 10:21:15,977 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 12 [2020-10-13 10:21:15,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:15,978 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-10-13 10:21:15,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:15,978 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-10-13 10:21:15,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 10:21:15,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:15,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:15,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:21:15,980 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:15,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:15,980 INFO L82 PathProgramCache]: Analyzing trace with hash 290038970, now seen corresponding path program 1 times [2020-10-13 10:21:15,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:15,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827252275] [2020-10-13 10:21:15,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:16,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:16,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:16,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 10:21:16,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:16,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 10:21:16,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:16,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:16,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:21:16,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:16,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:16,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:16,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:16,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:16,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:16,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:16,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:16,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:16,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:16,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:16,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:16,119 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 10:21:16,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827252275] [2020-10-13 10:21:16,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:16,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:21:16,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325255950] [2020-10-13 10:21:16,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:16,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:16,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:16,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:16,121 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 6 states. [2020-10-13 10:21:16,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:16,330 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-10-13 10:21:16,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:21:16,331 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-13 10:21:16,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:16,332 INFO L225 Difference]: With dead ends: 66 [2020-10-13 10:21:16,332 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 10:21:16,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:16,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 10:21:16,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2020-10-13 10:21:16,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-13 10:21:16,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-13 10:21:16,341 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 14 [2020-10-13 10:21:16,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:16,341 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-13 10:21:16,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:16,342 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-13 10:21:16,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 10:21:16,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:16,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:16,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:21:16,344 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:16,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:16,345 INFO L82 PathProgramCache]: Analyzing trace with hash 2060721718, now seen corresponding path program 1 times [2020-10-13 10:21:16,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:16,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95566613] [2020-10-13 10:21:16,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:16,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:16,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:16,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 10:21:16,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:16,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-13 10:21:16,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:21:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:21:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:21:16,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:16,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:16,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:16,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:16,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:16,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:16,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:21:16,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:16,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:16,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:16,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:16,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:16,638 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 10:21:16,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95566613] [2020-10-13 10:21:16,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:16,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:16,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285997880] [2020-10-13 10:21:16,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:16,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:16,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:16,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:16,641 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2020-10-13 10:21:16,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:16,859 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-10-13 10:21:16,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:21:16,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-13 10:21:16,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:16,861 INFO L225 Difference]: With dead ends: 48 [2020-10-13 10:21:16,861 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 10:21:16,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:16,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 10:21:16,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-13 10:21:16,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-13 10:21:16,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-13 10:21:16,876 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 15 [2020-10-13 10:21:16,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:16,876 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-13 10:21:16,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:16,876 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-13 10:21:16,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 10:21:16,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:16,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:16,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:21:16,879 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:16,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:16,880 INFO L82 PathProgramCache]: Analyzing trace with hash 373775322, now seen corresponding path program 1 times [2020-10-13 10:21:16,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:16,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065714479] [2020-10-13 10:21:16,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:16,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:17,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:17,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 10:21:17,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:17,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-13 10:21:17,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:17,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:17,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:17,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:21:17,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:17,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:17,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:17,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:17,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:17,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:17,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:17,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:17,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:17,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:17,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:17,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:17,274 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 10:21:17,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065714479] [2020-10-13 10:21:17,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:17,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:17,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141623616] [2020-10-13 10:21:17,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:17,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:17,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:17,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:17,277 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 5 states. [2020-10-13 10:21:17,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:17,639 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-10-13 10:21:17,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:17,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-13 10:21:17,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:17,642 INFO L225 Difference]: With dead ends: 46 [2020-10-13 10:21:17,643 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 10:21:17,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:17,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 10:21:17,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-13 10:21:17,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 10:21:17,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-13 10:21:17,659 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 17 [2020-10-13 10:21:17,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:17,660 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-13 10:21:17,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:17,660 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-13 10:21:17,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-13 10:21:17,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:17,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:17,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:21:17,664 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:17,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:17,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1568846049, now seen corresponding path program 1 times [2020-10-13 10:21:17,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:17,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098708112] [2020-10-13 10:21:17,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:17,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:17,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:17,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:17,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 10:21:17,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:17,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-13 10:21:17,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:17,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:17,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 10:21:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:21:17,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:18,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:18,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:18,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:18,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:18,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:18,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:21:18,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:18,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:18,088 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 10:21:18,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098708112] [2020-10-13 10:21:18,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:18,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:21:18,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133257417] [2020-10-13 10:21:18,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:18,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:18,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:18,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:18,095 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 6 states. [2020-10-13 10:21:18,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:18,332 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-10-13 10:21:18,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:21:18,332 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-13 10:21:18,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:18,333 INFO L225 Difference]: With dead ends: 59 [2020-10-13 10:21:18,333 INFO L226 Difference]: Without dead ends: 47 [2020-10-13 10:21:18,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:21:18,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-13 10:21:18,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-13 10:21:18,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-13 10:21:18,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-13 10:21:18,344 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 18 [2020-10-13 10:21:18,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:18,347 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-13 10:21:18,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:18,347 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-13 10:21:18,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 10:21:18,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:18,348 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:18,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:21:18,348 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:18,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:18,349 INFO L82 PathProgramCache]: Analyzing trace with hash 777661568, now seen corresponding path program 1 times [2020-10-13 10:21:18,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:18,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274281967] [2020-10-13 10:21:18,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:18,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:18,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:18,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:18,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 10:21:18,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:18,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 10:21:18,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:18,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:18,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:18,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:21:18,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:18,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:18,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:18,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:18,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:18,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:18,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:18,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:18,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:18,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274281967] [2020-10-13 10:21:18,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:18,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 10:21:18,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446911864] [2020-10-13 10:21:18,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:18,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:18,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:18,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:18,542 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 6 states. [2020-10-13 10:21:18,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:18,736 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-10-13 10:21:18,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:21:18,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-13 10:21:18,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:18,737 INFO L225 Difference]: With dead ends: 63 [2020-10-13 10:21:18,737 INFO L226 Difference]: Without dead ends: 41 [2020-10-13 10:21:18,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:18,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-13 10:21:18,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-13 10:21:18,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 10:21:18,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-10-13 10:21:18,743 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 21 [2020-10-13 10:21:18,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:18,743 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-10-13 10:21:18,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:18,743 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-10-13 10:21:18,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 10:21:18,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:18,744 INFO L422 BasicCegarLoop]: trace histogram [2, 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 10:21:18,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:21:18,745 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:18,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:18,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1056872398, now seen corresponding path program 1 times [2020-10-13 10:21:18,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:18,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081495753] [2020-10-13 10:21:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:18,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:18,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:18,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 10:21:18,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:18,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-13 10:21:18,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:18,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:21:18,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:18,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 10:21:18,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:19,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:19,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:19,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:19,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:19,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:19,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:19,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:19,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:19,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:19,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:19,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:19,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:19,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081495753] [2020-10-13 10:21:19,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:19,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:21:19,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979858655] [2020-10-13 10:21:19,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:21:19,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:19,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:21:19,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:19,187 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 8 states. [2020-10-13 10:21:19,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:19,484 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-10-13 10:21:19,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:21:19,485 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-13 10:21:19,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:19,486 INFO L225 Difference]: With dead ends: 42 [2020-10-13 10:21:19,486 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 10:21:19,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:19,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 10:21:19,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-13 10:21:19,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 10:21:19,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-13 10:21:19,491 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 25 [2020-10-13 10:21:19,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:19,492 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-13 10:21:19,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:21:19,492 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-13 10:21:19,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:21:19,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:19,493 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 10:21:19,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:21:19,494 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:19,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:19,494 INFO L82 PathProgramCache]: Analyzing trace with hash -377613816, now seen corresponding path program 1 times [2020-10-13 10:21:19,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:19,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303263743] [2020-10-13 10:21:19,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:19,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:19,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:19,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 10:21:19,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:19,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-13 10:21:19,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:19,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:19,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:19,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 10:21:19,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:19,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:19,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:19,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:19,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:19,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:19,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 10:21:19,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:19,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:19,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:19,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:19,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:20,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303263743] [2020-10-13 10:21:20,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:20,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:20,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89675057] [2020-10-13 10:21:20,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:20,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:20,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:20,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:20,008 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 9 states. [2020-10-13 10:21:20,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:20,636 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2020-10-13 10:21:20,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:20,636 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-13 10:21:20,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:20,638 INFO L225 Difference]: With dead ends: 120 [2020-10-13 10:21:20,638 INFO L226 Difference]: Without dead ends: 118 [2020-10-13 10:21:20,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:21:20,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-13 10:21:20,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 62. [2020-10-13 10:21:20,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-13 10:21:20,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2020-10-13 10:21:20,646 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 32 [2020-10-13 10:21:20,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:20,647 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2020-10-13 10:21:20,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:20,647 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2020-10-13 10:21:20,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:21:20,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:20,648 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 10:21:20,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:21:20,649 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:20,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:20,649 INFO L82 PathProgramCache]: Analyzing trace with hash -243600310, now seen corresponding path program 1 times [2020-10-13 10:21:20,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:20,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689777233] [2020-10-13 10:21:20,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:20,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:20,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:20,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 10:21:20,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:20,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-13 10:21:20,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:20,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:20,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:20,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:21:20,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:21,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:21,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:21,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:21,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:21,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:21,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:21,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:21,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:21,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:21,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:21,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:21,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:21,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689777233] [2020-10-13 10:21:21,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:21,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:21,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710791589] [2020-10-13 10:21:21,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:21,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:21,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:21,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:21,160 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 9 states. [2020-10-13 10:21:21,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:21,832 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-13 10:21:21,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:21,833 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-13 10:21:21,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:21,836 INFO L225 Difference]: With dead ends: 108 [2020-10-13 10:21:21,838 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 10:21:21,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:21:21,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 10:21:21,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 81. [2020-10-13 10:21:21,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 10:21:21,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2020-10-13 10:21:21,863 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 32 [2020-10-13 10:21:21,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:21,864 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2020-10-13 10:21:21,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:21,864 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2020-10-13 10:21:21,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 10:21:21,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:21,869 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 10:21:21,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:21:21,869 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:21,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:21,869 INFO L82 PathProgramCache]: Analyzing trace with hash 145286649, now seen corresponding path program 2 times [2020-10-13 10:21:21,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:21,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474268837] [2020-10-13 10:21:21,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:21,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:22,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:22,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:22,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:21:22,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:22,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 910 [2020-10-13 10:21:22,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:21:22,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:22,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:22,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:22,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:22,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:22,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:22,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:22,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:22,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:22,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:22,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:22,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:22,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474268837] [2020-10-13 10:21:22,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:22,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:22,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784009268] [2020-10-13 10:21:22,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:22,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:22,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:22,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:22,980 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 9 states. [2020-10-13 10:21:23,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:23,603 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2020-10-13 10:21:23,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:21:23,604 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-10-13 10:21:23,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:23,605 INFO L225 Difference]: With dead ends: 105 [2020-10-13 10:21:23,605 INFO L226 Difference]: Without dead ends: 93 [2020-10-13 10:21:23,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:21:23,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-13 10:21:23,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2020-10-13 10:21:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 10:21:23,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2020-10-13 10:21:23,613 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 35 [2020-10-13 10:21:23,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:23,613 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2020-10-13 10:21:23,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:23,613 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2020-10-13 10:21:23,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 10:21:23,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:23,615 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 10:21:23,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:21:23,615 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:23,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:23,616 INFO L82 PathProgramCache]: Analyzing trace with hash -969799515, now seen corresponding path program 1 times [2020-10-13 10:21:23,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:23,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077527447] [2020-10-13 10:21:23,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:23,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:23,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:23,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:21:23,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:23,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-13 10:21:23,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:23,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:21:23,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:23,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:21:23,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:24,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:24,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:24,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:24,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:24,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:24,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:24,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:24,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:24,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:24,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:24,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:24,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:24,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077527447] [2020-10-13 10:21:24,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:24,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:21:24,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811041736] [2020-10-13 10:21:24,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:21:24,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:24,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:21:24,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:24,157 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 10 states. [2020-10-13 10:21:24,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:24,921 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2020-10-13 10:21:24,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:21:24,922 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-13 10:21:24,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:24,923 INFO L225 Difference]: With dead ends: 103 [2020-10-13 10:21:24,923 INFO L226 Difference]: Without dead ends: 101 [2020-10-13 10:21:24,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:21:24,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-13 10:21:24,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 84. [2020-10-13 10:21:24,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-13 10:21:24,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2020-10-13 10:21:24,931 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 35 [2020-10-13 10:21:24,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:24,931 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2020-10-13 10:21:24,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:21:24,931 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2020-10-13 10:21:24,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 10:21:24,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:24,933 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 10:21:24,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 10:21:24,933 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:24,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:24,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1777941385, now seen corresponding path program 2 times [2020-10-13 10:21:24,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:24,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878266104] [2020-10-13 10:21:24,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:24,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:25,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:21:25,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:25,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-13 10:21:25,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:25,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:25,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 10:21:25,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:25,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:25,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:25,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:25,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:25,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:25,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:25,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:25,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:25,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:25,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:25,349 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:25,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878266104] [2020-10-13 10:21:25,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:25,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:25,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460313902] [2020-10-13 10:21:25,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:25,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:25,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:25,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:25,352 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand 9 states. [2020-10-13 10:21:25,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:25,808 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2020-10-13 10:21:25,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:21:25,809 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-10-13 10:21:25,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:25,810 INFO L225 Difference]: With dead ends: 100 [2020-10-13 10:21:25,810 INFO L226 Difference]: Without dead ends: 75 [2020-10-13 10:21:25,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:25,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-13 10:21:25,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-13 10:21:25,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 10:21:25,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-10-13 10:21:25,823 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 35 [2020-10-13 10:21:25,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:25,824 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-10-13 10:21:25,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:25,824 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-10-13 10:21:25,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:21:25,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:25,825 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 10:21:25,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 10:21:25,826 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:25,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:25,828 INFO L82 PathProgramCache]: Analyzing trace with hash -233815650, now seen corresponding path program 1 times [2020-10-13 10:21:25,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:25,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817130457] [2020-10-13 10:21:25,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:25,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:26,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:21:26,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:26,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 752 [2020-10-13 10:21:26,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:21:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 10:21:26,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:26,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:26,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:26,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:26,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:26,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:26,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:26,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:26,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:26,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817130457] [2020-10-13 10:21:26,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:26,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:21:26,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725844170] [2020-10-13 10:21:26,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:21:26,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:26,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:21:26,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:26,774 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 10 states. [2020-10-13 10:21:27,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:27,504 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2020-10-13 10:21:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:27,505 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-13 10:21:27,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:27,506 INFO L225 Difference]: With dead ends: 91 [2020-10-13 10:21:27,506 INFO L226 Difference]: Without dead ends: 61 [2020-10-13 10:21:27,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:21:27,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-13 10:21:27,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2020-10-13 10:21:27,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-13 10:21:27,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-13 10:21:27,511 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 40 [2020-10-13 10:21:27,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:27,511 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-13 10:21:27,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:21:27,511 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-13 10:21:27,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 10:21:27,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:27,512 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:27,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 10:21:27,512 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:27,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:27,513 INFO L82 PathProgramCache]: Analyzing trace with hash -372709504, now seen corresponding path program 3 times [2020-10-13 10:21:27,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:27,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855217531] [2020-10-13 10:21:27,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:27,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:28,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 10:21:28,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:28,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 746 [2020-10-13 10:21:28,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 10:21:28,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:28,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:28,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:28,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:28,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:28,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:28,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:28,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:28,621 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:28,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855217531] [2020-10-13 10:21:28,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:28,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:28,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618189468] [2020-10-13 10:21:28,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:28,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:28,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:28,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:28,624 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 11 states. [2020-10-13 10:21:29,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:29,422 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-10-13 10:21:29,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:29,423 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-10-13 10:21:29,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:29,424 INFO L225 Difference]: With dead ends: 88 [2020-10-13 10:21:29,424 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 10:21:29,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:21:29,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 10:21:29,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 54. [2020-10-13 10:21:29,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-13 10:21:29,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-10-13 10:21:29,431 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 43 [2020-10-13 10:21:29,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:29,431 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-10-13 10:21:29,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:29,432 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-10-13 10:21:29,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 10:21:29,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:29,432 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 10:21:29,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 10:21:29,433 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:29,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:29,433 INFO L82 PathProgramCache]: Analyzing trace with hash 220757377, now seen corresponding path program 4 times [2020-10-13 10:21:29,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:29,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099748359] [2020-10-13 10:21:29,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:29,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:31,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:32,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 10:21:32,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:21:32,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3048 [2020-10-13 10:21:32,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 10:21:32,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:33,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:33,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:33,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:33,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:33,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:33,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:33,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:33,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:33,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:33,159 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:33,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099748359] [2020-10-13 10:21:33,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:33,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:33,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758288179] [2020-10-13 10:21:33,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:33,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:33,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:33,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:33,164 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 11 states. [2020-10-13 10:21:34,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:34,358 INFO L93 Difference]: Finished difference Result 123 states and 135 transitions. [2020-10-13 10:21:34,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:21:34,359 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-13 10:21:34,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:34,360 INFO L225 Difference]: With dead ends: 123 [2020-10-13 10:21:34,360 INFO L226 Difference]: Without dead ends: 111 [2020-10-13 10:21:34,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:21:34,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-13 10:21:34,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 86. [2020-10-13 10:21:34,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-13 10:21:34,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2020-10-13 10:21:34,367 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 46 [2020-10-13 10:21:34,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:34,368 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2020-10-13 10:21:34,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:34,368 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2020-10-13 10:21:34,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 10:21:34,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:34,369 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:34,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 10:21:34,369 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:34,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:34,370 INFO L82 PathProgramCache]: Analyzing trace with hash -894328787, now seen corresponding path program 2 times [2020-10-13 10:21:34,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:34,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707721600] [2020-10-13 10:21:34,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:34,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:35,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:35,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 10:21:35,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:35,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 925 [2020-10-13 10:21:35,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:35,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:21:35,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:35,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 10:21:35,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:35,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:35,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:35,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:35,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:35,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:35,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:35,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:35,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:35,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:35,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:35,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:35,776 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:35,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707721600] [2020-10-13 10:21:35,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:35,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:21:35,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139197400] [2020-10-13 10:21:35,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:21:35,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:35,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:21:35,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:21:35,784 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand 12 states. [2020-10-13 10:21:36,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:36,880 INFO L93 Difference]: Finished difference Result 140 states and 152 transitions. [2020-10-13 10:21:36,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:21:36,881 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-13 10:21:36,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:36,882 INFO L225 Difference]: With dead ends: 140 [2020-10-13 10:21:36,882 INFO L226 Difference]: Without dead ends: 138 [2020-10-13 10:21:36,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:21:36,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-13 10:21:36,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 112. [2020-10-13 10:21:36,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-13 10:21:36,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 121 transitions. [2020-10-13 10:21:36,890 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 121 transitions. Word has length 46 [2020-10-13 10:21:36,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:36,891 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 121 transitions. [2020-10-13 10:21:36,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:21:36,891 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 121 transitions. [2020-10-13 10:21:36,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 10:21:36,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:36,892 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:36,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 10:21:36,892 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:36,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:36,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1250116675, now seen corresponding path program 1 times [2020-10-13 10:21:36,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:36,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120152301] [2020-10-13 10:21:36,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:36,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:37,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:37,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 10:21:37,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:37,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-10-13 10:21:37,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:37,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:21:37,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:37,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 10:21:37,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:37,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:37,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:37,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:37,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:37,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:37,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:37,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:37,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:37,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:37,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:37,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:37,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120152301] [2020-10-13 10:21:37,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:37,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:37,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516190601] [2020-10-13 10:21:37,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:37,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:37,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:37,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:37,791 INFO L87 Difference]: Start difference. First operand 112 states and 121 transitions. Second operand 11 states. [2020-10-13 10:21:38,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:38,962 INFO L93 Difference]: Finished difference Result 224 states and 245 transitions. [2020-10-13 10:21:38,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:21:38,963 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-13 10:21:38,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:38,964 INFO L225 Difference]: With dead ends: 224 [2020-10-13 10:21:38,964 INFO L226 Difference]: Without dead ends: 222 [2020-10-13 10:21:38,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:21:38,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-13 10:21:38,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 134. [2020-10-13 10:21:38,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-13 10:21:38,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 146 transitions. [2020-10-13 10:21:38,974 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 146 transitions. Word has length 46 [2020-10-13 10:21:38,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:38,974 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 146 transitions. [2020-10-13 10:21:38,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:38,974 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 146 transitions. [2020-10-13 10:21:38,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 10:21:38,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:38,975 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-13 10:21:38,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 10:21:38,976 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:38,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:38,976 INFO L82 PathProgramCache]: Analyzing trace with hash 135030511, now seen corresponding path program 1 times [2020-10-13 10:21:38,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:38,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207242476] [2020-10-13 10:21:38,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:39,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:39,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:39,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 10:21:39,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:39,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 634 [2020-10-13 10:21:39,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:39,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:39,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:39,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 10:21:39,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:40,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:40,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:40,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:40,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:40,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:40,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:40,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:40,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:40,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:40,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:40,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:40,230 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:40,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207242476] [2020-10-13 10:21:40,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:40,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:40,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884033910] [2020-10-13 10:21:40,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:40,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:40,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:40,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:40,233 INFO L87 Difference]: Start difference. First operand 134 states and 146 transitions. Second operand 11 states. [2020-10-13 10:21:41,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:41,562 INFO L93 Difference]: Finished difference Result 164 states and 179 transitions. [2020-10-13 10:21:41,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:21:41,562 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-13 10:21:41,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:41,563 INFO L225 Difference]: With dead ends: 164 [2020-10-13 10:21:41,563 INFO L226 Difference]: Without dead ends: 151 [2020-10-13 10:21:41,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:21:41,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-13 10:21:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 137. [2020-10-13 10:21:41,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-13 10:21:41,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 148 transitions. [2020-10-13 10:21:41,573 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 148 transitions. Word has length 46 [2020-10-13 10:21:41,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:41,573 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 148 transitions. [2020-10-13 10:21:41,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:41,574 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 148 transitions. [2020-10-13 10:21:41,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 10:21:41,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:41,574 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 10:21:41,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 10:21:41,575 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:41,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:41,575 INFO L82 PathProgramCache]: Analyzing trace with hash -673111359, now seen corresponding path program 3 times [2020-10-13 10:21:41,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:41,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764585011] [2020-10-13 10:21:41,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:41,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:42,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:42,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 10:21:42,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:42,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-13 10:21:42,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:21:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 10:21:42,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:42,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:42,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:42,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:42,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:42,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:42,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:42,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:42,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:42,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:42,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:42,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:42,318 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:42,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764585011] [2020-10-13 10:21:42,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:42,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:42,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595072057] [2020-10-13 10:21:42,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:42,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:42,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:42,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:42,320 INFO L87 Difference]: Start difference. First operand 137 states and 148 transitions. Second operand 11 states. [2020-10-13 10:21:43,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:43,220 INFO L93 Difference]: Finished difference Result 186 states and 201 transitions. [2020-10-13 10:21:43,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:21:43,220 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-13 10:21:43,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:43,222 INFO L225 Difference]: With dead ends: 186 [2020-10-13 10:21:43,222 INFO L226 Difference]: Without dead ends: 174 [2020-10-13 10:21:43,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:21:43,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-13 10:21:43,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 156. [2020-10-13 10:21:43,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-13 10:21:43,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 168 transitions. [2020-10-13 10:21:43,233 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 168 transitions. Word has length 46 [2020-10-13 10:21:43,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:43,234 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 168 transitions. [2020-10-13 10:21:43,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:43,234 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 168 transitions. [2020-10-13 10:21:43,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 10:21:43,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:43,235 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:43,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 10:21:43,235 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:43,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:43,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1683572190, now seen corresponding path program 2 times [2020-10-13 10:21:43,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:43,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049365287] [2020-10-13 10:21:43,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:43,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:43,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:44,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:44,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 10:21:44,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:44,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1411 [2020-10-13 10:21:44,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:21:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 10:21:44,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:45,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:45,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:45,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:45,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:45,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:45,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:45,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:45,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:45,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:45,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:45,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:45,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049365287] [2020-10-13 10:21:45,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:45,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:45,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448218045] [2020-10-13 10:21:45,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:45,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:45,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:45,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:45,118 INFO L87 Difference]: Start difference. First operand 156 states and 168 transitions. Second operand 11 states. [2020-10-13 10:21:46,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:46,277 INFO L93 Difference]: Finished difference Result 214 states and 231 transitions. [2020-10-13 10:21:46,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:21:46,277 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-10-13 10:21:46,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:46,279 INFO L225 Difference]: With dead ends: 214 [2020-10-13 10:21:46,279 INFO L226 Difference]: Without dead ends: 202 [2020-10-13 10:21:46,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:21:46,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-13 10:21:46,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 151. [2020-10-13 10:21:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-13 10:21:46,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 162 transitions. [2020-10-13 10:21:46,297 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 162 transitions. Word has length 49 [2020-10-13 10:21:46,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:46,298 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 162 transitions. [2020-10-13 10:21:46,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:46,298 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 162 transitions. [2020-10-13 10:21:46,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 10:21:46,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:46,299 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:46,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 10:21:46,299 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:46,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:46,299 INFO L82 PathProgramCache]: Analyzing trace with hash 568486026, now seen corresponding path program 2 times [2020-10-13 10:21:46,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:46,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886927601] [2020-10-13 10:21:46,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:46,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:47,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 10:21:47,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:47,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 706 [2020-10-13 10:21:47,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:47,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:21:47,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:47,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 10:21:47,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:47,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:47,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:47,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:47,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:47,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:47,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:47,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:47,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:47,415 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:47,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886927601] [2020-10-13 10:21:47,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:47,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:21:47,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545007377] [2020-10-13 10:21:47,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:21:47,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:47,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:21:47,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:21:47,417 INFO L87 Difference]: Start difference. First operand 151 states and 162 transitions. Second operand 12 states. [2020-10-13 10:21:48,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:48,672 INFO L93 Difference]: Finished difference Result 182 states and 194 transitions. [2020-10-13 10:21:48,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:21:48,673 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-13 10:21:48,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:48,675 INFO L225 Difference]: With dead ends: 182 [2020-10-13 10:21:48,675 INFO L226 Difference]: Without dead ends: 180 [2020-10-13 10:21:48,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:21:48,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-13 10:21:48,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 151. [2020-10-13 10:21:48,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-13 10:21:48,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 162 transitions. [2020-10-13 10:21:48,688 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 162 transitions. Word has length 49 [2020-10-13 10:21:48,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:48,689 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 162 transitions. [2020-10-13 10:21:48,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:21:48,689 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 162 transitions. [2020-10-13 10:21:48,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 10:21:48,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:48,690 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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 10:21:48,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 10:21:48,691 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:48,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:48,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1660939936, now seen corresponding path program 4 times [2020-10-13 10:21:48,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:48,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667789954] [2020-10-13 10:21:48,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:48,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:49,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:49,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:49,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 10:21:49,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:49,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-13 10:21:49,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:49,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:21:49,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:49,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 10:21:49,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:49,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:49,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:49,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:49,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:49,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:49,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:49,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:49,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:49,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:49,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:49,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:49,296 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:49,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667789954] [2020-10-13 10:21:49,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:49,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:49,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531463021] [2020-10-13 10:21:49,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:49,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:49,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:49,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:49,298 INFO L87 Difference]: Start difference. First operand 151 states and 162 transitions. Second operand 11 states. [2020-10-13 10:21:50,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:50,192 INFO L93 Difference]: Finished difference Result 170 states and 182 transitions. [2020-10-13 10:21:50,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:50,193 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-10-13 10:21:50,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:50,195 INFO L225 Difference]: With dead ends: 170 [2020-10-13 10:21:50,195 INFO L226 Difference]: Without dead ends: 142 [2020-10-13 10:21:50,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:21:50,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-13 10:21:50,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-10-13 10:21:50,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-13 10:21:50,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2020-10-13 10:21:50,204 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 49 [2020-10-13 10:21:50,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:50,205 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2020-10-13 10:21:50,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:50,205 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2020-10-13 10:21:50,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 10:21:50,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:50,206 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-13 10:21:50,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 10:21:50,206 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:50,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:50,206 INFO L82 PathProgramCache]: Analyzing trace with hash 2026512150, now seen corresponding path program 2 times [2020-10-13 10:21:50,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:50,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859971775] [2020-10-13 10:21:50,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:50,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:51,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 10:21:51,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:51,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 799 [2020-10-13 10:21:51,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:51,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:21:51,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:51,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 10:21:51,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:51,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:51,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:51,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:51,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:51,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:51,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:51,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:51,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:51,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:51,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:51,550 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:51,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859971775] [2020-10-13 10:21:51,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:51,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:21:51,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456784557] [2020-10-13 10:21:51,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:21:51,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:51,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:21:51,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:51,553 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand 13 states. [2020-10-13 10:21:53,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:53,323 INFO L93 Difference]: Finished difference Result 299 states and 324 transitions. [2020-10-13 10:21:53,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:21:53,324 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-13 10:21:53,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:53,326 INFO L225 Difference]: With dead ends: 299 [2020-10-13 10:21:53,326 INFO L226 Difference]: Without dead ends: 297 [2020-10-13 10:21:53,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:21:53,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-13 10:21:53,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 217. [2020-10-13 10:21:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-13 10:21:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 233 transitions. [2020-10-13 10:21:53,340 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 233 transitions. Word has length 51 [2020-10-13 10:21:53,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:53,340 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 233 transitions. [2020-10-13 10:21:53,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:21:53,340 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 233 transitions. [2020-10-13 10:21:53,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 10:21:53,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:53,341 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:53,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 10:21:53,342 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:53,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:53,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1751752536, now seen corresponding path program 1 times [2020-10-13 10:21:53,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:53,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161693568] [2020-10-13 10:21:53,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:53,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:53,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:53,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 10:21:53,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:53,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-10-13 10:21:53,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:21:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 10:21:53,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:54,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:54,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:54,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:54,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:54,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:54,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:54,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:54,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:54,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:54,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:54,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:54,358 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:54,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161693568] [2020-10-13 10:21:54,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:54,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:21:54,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863732532] [2020-10-13 10:21:54,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:21:54,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:54,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:21:54,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:54,360 INFO L87 Difference]: Start difference. First operand 217 states and 233 transitions. Second operand 13 states. [2020-10-13 10:21:55,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:55,906 INFO L93 Difference]: Finished difference Result 265 states and 285 transitions. [2020-10-13 10:21:55,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:21:55,907 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-13 10:21:55,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:55,908 INFO L225 Difference]: With dead ends: 265 [2020-10-13 10:21:55,908 INFO L226 Difference]: Without dead ends: 253 [2020-10-13 10:21:55,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:21:55,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-13 10:21:55,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 230. [2020-10-13 10:21:55,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-13 10:21:55,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 247 transitions. [2020-10-13 10:21:55,927 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 247 transitions. Word has length 51 [2020-10-13 10:21:55,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:55,927 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 247 transitions. [2020-10-13 10:21:55,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:21:55,927 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 247 transitions. [2020-10-13 10:21:55,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:21:55,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:55,936 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-10-13 10:21:55,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 10:21:55,937 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:55,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:55,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1412688341, now seen corresponding path program 3 times [2020-10-13 10:21:55,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:55,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16063684] [2020-10-13 10:21:55,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:56,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:57,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:57,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:57,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 10:21:57,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:57,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1760 [2020-10-13 10:21:57,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:57,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:21:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 10:21:57,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:58,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:58,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:58,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:58,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:58,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:58,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:58,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:58,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:58,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:58,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:58,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:58,184 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:58,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16063684] [2020-10-13 10:21:58,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:58,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:21:58,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960290009] [2020-10-13 10:21:58,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:21:58,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:58,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:21:58,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:58,185 INFO L87 Difference]: Start difference. First operand 230 states and 247 transitions. Second operand 13 states. [2020-10-13 10:21:59,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:59,640 INFO L93 Difference]: Finished difference Result 265 states and 284 transitions. [2020-10-13 10:21:59,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:21:59,640 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-13 10:21:59,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:59,642 INFO L225 Difference]: With dead ends: 265 [2020-10-13 10:21:59,643 INFO L226 Difference]: Without dead ends: 253 [2020-10-13 10:21:59,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:21:59,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-13 10:21:59,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 227. [2020-10-13 10:21:59,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-13 10:21:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 243 transitions. [2020-10-13 10:21:59,658 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 243 transitions. Word has length 54 [2020-10-13 10:21:59,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:59,658 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 243 transitions. [2020-10-13 10:21:59,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:21:59,658 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 243 transitions. [2020-10-13 10:21:59,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:21:59,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:59,659 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:59,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 10:21:59,660 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:59,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:59,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1767192791, now seen corresponding path program 1 times [2020-10-13 10:21:59,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:59,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011275359] [2020-10-13 10:21:59,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:59,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:00,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:00,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 10:22:00,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:00,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1042 [2020-10-13 10:22:00,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:00,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:00,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:00,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 10:22:00,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:01,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:01,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:01,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:01,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:01,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:01,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:01,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:01,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:01,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:01,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:01,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:01,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011275359] [2020-10-13 10:22:01,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:01,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:22:01,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198723074] [2020-10-13 10:22:01,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:22:01,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:01,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:22:01,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:01,220 INFO L87 Difference]: Start difference. First operand 227 states and 243 transitions. Second operand 14 states. [2020-10-13 10:22:03,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:03,120 INFO L93 Difference]: Finished difference Result 271 states and 290 transitions. [2020-10-13 10:22:03,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:22:03,121 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-13 10:22:03,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:03,123 INFO L225 Difference]: With dead ends: 271 [2020-10-13 10:22:03,123 INFO L226 Difference]: Without dead ends: 269 [2020-10-13 10:22:03,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:22:03,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-13 10:22:03,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 227. [2020-10-13 10:22:03,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-13 10:22:03,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 243 transitions. [2020-10-13 10:22:03,138 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 243 transitions. Word has length 54 [2020-10-13 10:22:03,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:03,138 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 243 transitions. [2020-10-13 10:22:03,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:22:03,138 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 243 transitions. [2020-10-13 10:22:03,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:22:03,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:03,140 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:03,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 10:22:03,140 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:03,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:03,140 INFO L82 PathProgramCache]: Analyzing trace with hash -568682839, now seen corresponding path program 2 times [2020-10-13 10:22:03,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:03,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394001702] [2020-10-13 10:22:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:03,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:03,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:04,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:04,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 10:22:04,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:04,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-10-13 10:22:04,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 10:22:04,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:04,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:04,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:04,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:04,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:04,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:04,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:04,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:04,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:04,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:04,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:04,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:04,465 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:04,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394001702] [2020-10-13 10:22:04,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:04,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:04,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400208637] [2020-10-13 10:22:04,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:04,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:04,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:04,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:04,466 INFO L87 Difference]: Start difference. First operand 227 states and 243 transitions. Second operand 13 states. [2020-10-13 10:22:05,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:05,796 INFO L93 Difference]: Finished difference Result 252 states and 269 transitions. [2020-10-13 10:22:05,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:22:05,797 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-13 10:22:05,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:05,798 INFO L225 Difference]: With dead ends: 252 [2020-10-13 10:22:05,798 INFO L226 Difference]: Without dead ends: 186 [2020-10-13 10:22:05,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:22:05,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-13 10:22:05,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 176. [2020-10-13 10:22:05,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-13 10:22:05,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 188 transitions. [2020-10-13 10:22:05,814 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 188 transitions. Word has length 54 [2020-10-13 10:22:05,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:05,814 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 188 transitions. [2020-10-13 10:22:05,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:05,814 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 188 transitions. [2020-10-13 10:22:05,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:22:05,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:05,815 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:05,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 10:22:05,816 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:05,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:05,816 INFO L82 PathProgramCache]: Analyzing trace with hash 800949157, now seen corresponding path program 3 times [2020-10-13 10:22:05,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:05,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588391226] [2020-10-13 10:22:05,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:06,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:07,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:07,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 10:22:07,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:07,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1315 [2020-10-13 10:22:07,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:07,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:07,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:07,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 10:22:07,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:07,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:07,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:07,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:07,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:07,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:07,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:07,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:07,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:07,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:07,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:07,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:07,794 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:07,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588391226] [2020-10-13 10:22:07,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:07,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:07,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081888836] [2020-10-13 10:22:07,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:07,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:07,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:07,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:07,796 INFO L87 Difference]: Start difference. First operand 176 states and 188 transitions. Second operand 13 states. [2020-10-13 10:22:08,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:08,905 INFO L93 Difference]: Finished difference Result 202 states and 215 transitions. [2020-10-13 10:22:08,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:22:08,906 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-13 10:22:08,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:08,908 INFO L225 Difference]: With dead ends: 202 [2020-10-13 10:22:08,908 INFO L226 Difference]: Without dead ends: 200 [2020-10-13 10:22:08,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:22:08,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-13 10:22:08,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 172. [2020-10-13 10:22:08,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-13 10:22:08,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 184 transitions. [2020-10-13 10:22:08,918 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 184 transitions. Word has length 57 [2020-10-13 10:22:08,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:08,919 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 184 transitions. [2020-10-13 10:22:08,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:08,919 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 184 transitions. [2020-10-13 10:22:08,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:22:08,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:08,920 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-13 10:22:08,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 10:22:08,920 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:08,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:08,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1931554039, now seen corresponding path program 3 times [2020-10-13 10:22:08,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:08,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451359216] [2020-10-13 10:22:08,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:08,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:09,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:09,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 10:22:09,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:09,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 978 [2020-10-13 10:22:09,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:09,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:09,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:09,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 10:22:09,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:10,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:10,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:10,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:10,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:10,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:10,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:10,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:10,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:10,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:10,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:10,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:10,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451359216] [2020-10-13 10:22:10,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:10,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:22:10,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951410031] [2020-10-13 10:22:10,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:22:10,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:10,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:22:10,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:22:10,241 INFO L87 Difference]: Start difference. First operand 172 states and 184 transitions. Second operand 12 states. [2020-10-13 10:22:11,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:11,422 INFO L93 Difference]: Finished difference Result 196 states and 210 transitions. [2020-10-13 10:22:11,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:22:11,422 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-10-13 10:22:11,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:11,424 INFO L225 Difference]: With dead ends: 196 [2020-10-13 10:22:11,424 INFO L226 Difference]: Without dead ends: 194 [2020-10-13 10:22:11,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:22:11,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-13 10:22:11,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 176. [2020-10-13 10:22:11,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-13 10:22:11,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 189 transitions. [2020-10-13 10:22:11,437 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 189 transitions. Word has length 57 [2020-10-13 10:22:11,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:11,437 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 189 transitions. [2020-10-13 10:22:11,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:22:11,438 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 189 transitions. [2020-10-13 10:22:11,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 10:22:11,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:11,439 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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 10:22:11,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 10:22:11,439 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:11,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:11,439 INFO L82 PathProgramCache]: Analyzing trace with hash 180183212, now seen corresponding path program 4 times [2020-10-13 10:22:11,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:11,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573658819] [2020-10-13 10:22:11,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:11,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:12,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:13,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:13,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 10:22:13,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:13,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1550 [2020-10-13 10:22:13,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:13,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:13,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:13,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 10:22:13,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:13,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:13,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:13,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:13,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:13,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:13,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:13,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:13,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:13,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:13,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:13,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:13,410 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:13,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573658819] [2020-10-13 10:22:13,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:13,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:22:13,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819349059] [2020-10-13 10:22:13,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:22:13,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:13,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:22:13,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:13,412 INFO L87 Difference]: Start difference. First operand 176 states and 189 transitions. Second operand 14 states. [2020-10-13 10:22:15,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:15,358 INFO L93 Difference]: Finished difference Result 213 states and 230 transitions. [2020-10-13 10:22:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:22:15,358 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 59 [2020-10-13 10:22:15,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:15,360 INFO L225 Difference]: With dead ends: 213 [2020-10-13 10:22:15,360 INFO L226 Difference]: Without dead ends: 175 [2020-10-13 10:22:15,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:22:15,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-13 10:22:15,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 159. [2020-10-13 10:22:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-13 10:22:15,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 171 transitions. [2020-10-13 10:22:15,371 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 171 transitions. Word has length 59 [2020-10-13 10:22:15,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:15,371 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 171 transitions. [2020-10-13 10:22:15,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:22:15,372 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 171 transitions. [2020-10-13 10:22:15,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:22:15,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:15,373 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:15,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 10:22:15,373 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:15,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:15,373 INFO L82 PathProgramCache]: Analyzing trace with hash 73674922, now seen corresponding path program 4 times [2020-10-13 10:22:15,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:15,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903541360] [2020-10-13 10:22:15,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:15,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:16,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:17,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:19,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:19,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:22:19,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:22:19,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3957 [2020-10-13 10:22:19,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 10:22:19,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:19,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:19,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:19,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:19,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:19,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:19,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:19,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:19,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:19,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:19,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:19,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:19,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903541360] [2020-10-13 10:22:19,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:19,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:19,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76248233] [2020-10-13 10:22:19,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:19,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:19,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:19,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:19,736 INFO L87 Difference]: Start difference. First operand 159 states and 171 transitions. Second operand 13 states. [2020-10-13 10:22:20,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:20,807 INFO L93 Difference]: Finished difference Result 219 states and 236 transitions. [2020-10-13 10:22:20,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:22:20,808 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-10-13 10:22:20,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:20,809 INFO L225 Difference]: With dead ends: 219 [2020-10-13 10:22:20,809 INFO L226 Difference]: Without dead ends: 207 [2020-10-13 10:22:20,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:22:20,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-13 10:22:20,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 194. [2020-10-13 10:22:20,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 10:22:20,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 208 transitions. [2020-10-13 10:22:20,821 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 208 transitions. Word has length 60 [2020-10-13 10:22:20,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:20,821 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 208 transitions. [2020-10-13 10:22:20,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:20,822 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 208 transitions. [2020-10-13 10:22:20,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:22:20,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:20,823 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-13 10:22:20,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 10:22:20,823 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:20,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:20,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1041411242, now seen corresponding path program 3 times [2020-10-13 10:22:20,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:20,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991732338] [2020-10-13 10:22:20,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:21,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:22,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:22,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:22:22,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:22,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1389 [2020-10-13 10:22:22,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:22,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:22:22,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:22,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:22:22,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:22,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:22,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:22,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:22,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:22,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:22,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:22,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:22,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:22,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:22,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:22,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:22,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991732338] [2020-10-13 10:22:22,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:22,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:22:22,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793133247] [2020-10-13 10:22:22,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:22:22,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:22,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:22:22,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:22,789 INFO L87 Difference]: Start difference. First operand 194 states and 208 transitions. Second operand 14 states. [2020-10-13 10:22:24,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:24,490 INFO L93 Difference]: Finished difference Result 251 states and 270 transitions. [2020-10-13 10:22:24,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:22:24,490 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2020-10-13 10:22:24,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:24,492 INFO L225 Difference]: With dead ends: 251 [2020-10-13 10:22:24,492 INFO L226 Difference]: Without dead ends: 249 [2020-10-13 10:22:24,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:22:24,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-13 10:22:24,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 214. [2020-10-13 10:22:24,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-13 10:22:24,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 230 transitions. [2020-10-13 10:22:24,505 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 230 transitions. Word has length 60 [2020-10-13 10:22:24,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:24,506 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 230 transitions. [2020-10-13 10:22:24,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:22:24,506 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 230 transitions. [2020-10-13 10:22:24,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:22:24,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:24,507 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-13 10:22:24,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 10:22:24,507 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:24,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:24,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1465057964, now seen corresponding path program 4 times [2020-10-13 10:22:24,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:24,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008767628] [2020-10-13 10:22:24,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:24,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:25,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:25,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:22:25,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:25,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 839 [2020-10-13 10:22:25,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:25,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:25,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 10:22:25,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:25,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:25,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:25,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:25,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:25,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:25,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:25,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:25,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:25,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008767628] [2020-10-13 10:22:25,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:25,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:25,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377483350] [2020-10-13 10:22:25,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:25,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:25,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:25,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:25,912 INFO L87 Difference]: Start difference. First operand 214 states and 230 transitions. Second operand 13 states. [2020-10-13 10:22:27,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:27,086 INFO L93 Difference]: Finished difference Result 230 states and 246 transitions. [2020-10-13 10:22:27,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:22:27,087 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-10-13 10:22:27,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:27,089 INFO L225 Difference]: With dead ends: 230 [2020-10-13 10:22:27,089 INFO L226 Difference]: Without dead ends: 203 [2020-10-13 10:22:27,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:22:27,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-13 10:22:27,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 181. [2020-10-13 10:22:27,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-13 10:22:27,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 195 transitions. [2020-10-13 10:22:27,100 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 195 transitions. Word has length 60 [2020-10-13 10:22:27,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:27,101 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 195 transitions. [2020-10-13 10:22:27,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:27,101 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 195 transitions. [2020-10-13 10:22:27,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 10:22:27,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:27,102 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:27,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 10:22:27,102 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:27,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:27,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1418090850, now seen corresponding path program 5 times [2020-10-13 10:22:27,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:27,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331604161] [2020-10-13 10:22:27,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:27,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:28,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:28,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 10:22:28,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:28,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1236 [2020-10-13 10:22:28,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:28,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:22:28,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:28,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 10:22:28,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:28,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:28,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:28,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:28,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:28,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:28,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:28,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:28,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:28,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:28,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:28,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:28,923 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:28,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331604161] [2020-10-13 10:22:28,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:28,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:28,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892477997] [2020-10-13 10:22:28,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:28,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:28,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:28,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:28,924 INFO L87 Difference]: Start difference. First operand 181 states and 195 transitions. Second operand 15 states. [2020-10-13 10:22:31,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:31,020 INFO L93 Difference]: Finished difference Result 268 states and 289 transitions. [2020-10-13 10:22:31,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:22:31,021 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 62 [2020-10-13 10:22:31,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:31,023 INFO L225 Difference]: With dead ends: 268 [2020-10-13 10:22:31,023 INFO L226 Difference]: Without dead ends: 266 [2020-10-13 10:22:31,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:22:31,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-13 10:22:31,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 194. [2020-10-13 10:22:31,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 10:22:31,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 209 transitions. [2020-10-13 10:22:31,036 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 209 transitions. Word has length 62 [2020-10-13 10:22:31,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:31,037 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 209 transitions. [2020-10-13 10:22:31,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:31,037 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 209 transitions. [2020-10-13 10:22:31,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 10:22:31,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:31,038 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:31,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 10:22:31,038 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:31,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:31,038 INFO L82 PathProgramCache]: Analyzing trace with hash 72941987, now seen corresponding path program 6 times [2020-10-13 10:22:31,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:31,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578766599] [2020-10-13 10:22:31,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:31,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:32,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:33,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:33,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:33,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 10:22:33,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:22:33,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2814 [2020-10-13 10:22:33,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:33,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:22:33,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:33,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 10:22:33,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:34,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:34,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:34,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:34,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:34,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:34,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:34,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:34,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:34,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578766599] [2020-10-13 10:22:34,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:34,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:34,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387397019] [2020-10-13 10:22:34,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:34,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:34,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:34,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:34,583 INFO L87 Difference]: Start difference. First operand 194 states and 209 transitions. Second operand 15 states. [2020-10-13 10:22:36,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:36,868 INFO L93 Difference]: Finished difference Result 326 states and 353 transitions. [2020-10-13 10:22:36,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:22:36,869 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-13 10:22:36,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:36,872 INFO L225 Difference]: With dead ends: 326 [2020-10-13 10:22:36,872 INFO L226 Difference]: Without dead ends: 314 [2020-10-13 10:22:36,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:22:36,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-13 10:22:36,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 266. [2020-10-13 10:22:36,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-13 10:22:36,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 286 transitions. [2020-10-13 10:22:36,888 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 286 transitions. Word has length 65 [2020-10-13 10:22:36,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:36,889 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 286 transitions. [2020-10-13 10:22:36,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:36,889 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 286 transitions. [2020-10-13 10:22:36,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 10:22:36,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:36,890 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:36,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 10:22:36,891 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:36,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:36,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1042144177, now seen corresponding path program 2 times [2020-10-13 10:22:36,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:36,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681507366] [2020-10-13 10:22:36,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:37,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:38,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:38,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 10:22:38,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:38,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1647 [2020-10-13 10:22:38,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:38,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:22:38,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:38,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 10:22:38,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:39,119 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-10-13 10:22:39,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:39,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:39,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:39,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:39,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:39,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:39,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:39,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:39,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:39,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:39,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:39,485 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:39,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681507366] [2020-10-13 10:22:39,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:39,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:22:39,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902036960] [2020-10-13 10:22:39,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:22:39,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:39,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:22:39,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:22:39,486 INFO L87 Difference]: Start difference. First operand 266 states and 286 transitions. Second operand 16 states. [2020-10-13 10:22:42,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:42,083 INFO L93 Difference]: Finished difference Result 375 states and 406 transitions. [2020-10-13 10:22:42,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:22:42,083 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 65 [2020-10-13 10:22:42,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:42,086 INFO L225 Difference]: With dead ends: 375 [2020-10-13 10:22:42,086 INFO L226 Difference]: Without dead ends: 373 [2020-10-13 10:22:42,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:22:42,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-13 10:22:42,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 318. [2020-10-13 10:22:42,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-10-13 10:22:42,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 343 transitions. [2020-10-13 10:22:42,106 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 343 transitions. Word has length 65 [2020-10-13 10:22:42,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:42,106 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 343 transitions. [2020-10-13 10:22:42,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:22:42,106 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 343 transitions. [2020-10-13 10:22:42,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 10:22:42,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:42,108 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-13 10:22:42,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 10:22:42,108 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:42,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:42,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1855330715, now seen corresponding path program 3 times [2020-10-13 10:22:42,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:42,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477021545] [2020-10-13 10:22:42,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:42,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:43,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:43,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 10:22:43,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:43,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1369 [2020-10-13 10:22:43,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:43,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:22:43,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:43,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 10:22:43,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:44,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:44,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:44,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:44,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:44,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:44,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:44,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:44,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:44,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:44,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:44,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:44,131 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:44,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477021545] [2020-10-13 10:22:44,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:44,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:44,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873219884] [2020-10-13 10:22:44,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:44,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:44,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:44,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:44,132 INFO L87 Difference]: Start difference. First operand 318 states and 343 transitions. Second operand 15 states. [2020-10-13 10:22:47,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:47,004 INFO L93 Difference]: Finished difference Result 579 states and 627 transitions. [2020-10-13 10:22:47,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:22:47,005 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-13 10:22:47,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:47,008 INFO L225 Difference]: With dead ends: 579 [2020-10-13 10:22:47,008 INFO L226 Difference]: Without dead ends: 577 [2020-10-13 10:22:47,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:22:47,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2020-10-13 10:22:47,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 393. [2020-10-13 10:22:47,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-10-13 10:22:47,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 425 transitions. [2020-10-13 10:22:47,033 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 425 transitions. Word has length 65 [2020-10-13 10:22:47,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:47,033 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 425 transitions. [2020-10-13 10:22:47,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:47,033 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 425 transitions. [2020-10-13 10:22:47,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 10:22:47,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:47,035 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:47,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 10:22:47,035 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:47,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:47,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1324550417, now seen corresponding path program 1 times [2020-10-13 10:22:47,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:47,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066222134] [2020-10-13 10:22:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:47,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:48,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:48,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 10:22:48,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:48,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1242 [2020-10-13 10:22:48,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:48,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:22:48,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:48,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 10:22:48,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:48,869 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2020-10-13 10:22:49,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:49,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:49,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:49,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:49,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:49,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:49,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:49,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:49,102 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:49,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066222134] [2020-10-13 10:22:49,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:49,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:49,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34213895] [2020-10-13 10:22:49,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:49,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:49,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:49,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:49,103 INFO L87 Difference]: Start difference. First operand 393 states and 425 transitions. Second operand 15 states. [2020-10-13 10:22:51,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:51,025 INFO L93 Difference]: Finished difference Result 506 states and 549 transitions. [2020-10-13 10:22:51,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:22:51,025 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-13 10:22:51,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:51,028 INFO L225 Difference]: With dead ends: 506 [2020-10-13 10:22:51,028 INFO L226 Difference]: Without dead ends: 493 [2020-10-13 10:22:51,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:22:51,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-10-13 10:22:51,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 449. [2020-10-13 10:22:51,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-10-13 10:22:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 484 transitions. [2020-10-13 10:22:51,055 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 484 transitions. Word has length 65 [2020-10-13 10:22:51,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:51,055 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 484 transitions. [2020-10-13 10:22:51,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:51,056 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 484 transitions. [2020-10-13 10:22:51,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 10:22:51,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:51,057 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-13 10:22:51,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 10:22:51,057 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:51,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:51,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1011325213, now seen corresponding path program 4 times [2020-10-13 10:22:51,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:51,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69690230] [2020-10-13 10:22:51,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:51,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:52,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:52,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 10:22:52,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:52,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 871 [2020-10-13 10:22:52,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:52,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:22:52,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:52,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 10:22:52,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:52,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:52,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:52,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:52,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:52,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:52,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:52,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:52,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:52,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:52,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:52,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:52,476 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 1 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:52,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69690230] [2020-10-13 10:22:52,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:52,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:52,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185257995] [2020-10-13 10:22:52,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:52,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:52,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:52,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:52,477 INFO L87 Difference]: Start difference. First operand 449 states and 484 transitions. Second operand 15 states. [2020-10-13 10:22:54,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:54,326 INFO L93 Difference]: Finished difference Result 491 states and 529 transitions. [2020-10-13 10:22:54,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:22:54,327 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-13 10:22:54,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:54,329 INFO L225 Difference]: With dead ends: 491 [2020-10-13 10:22:54,329 INFO L226 Difference]: Without dead ends: 479 [2020-10-13 10:22:54,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:22:54,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-10-13 10:22:54,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 464. [2020-10-13 10:22:54,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-13 10:22:54,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 500 transitions. [2020-10-13 10:22:54,355 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 500 transitions. Word has length 65 [2020-10-13 10:22:54,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:54,356 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 500 transitions. [2020-10-13 10:22:54,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:54,356 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 500 transitions. [2020-10-13 10:22:54,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 10:22:54,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:54,357 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:54,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 10:22:54,358 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:54,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:54,358 INFO L82 PathProgramCache]: Analyzing trace with hash 895932540, now seen corresponding path program 5 times [2020-10-13 10:22:54,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:54,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884563357] [2020-10-13 10:22:54,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:54,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:55,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:57,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:57,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 10:22:57,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:57,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3346 [2020-10-13 10:22:57,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:57,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:22:57,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:57,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 10:22:57,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:58,280 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 43 [2020-10-13 10:22:58,474 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 55 [2020-10-13 10:22:58,748 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 66 [2020-10-13 10:22:58,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:59,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:59,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:59,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:59,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:59,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:59,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:59,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:59,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:59,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:59,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:22:59,069 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 12 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:59,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884563357] [2020-10-13 10:22:59,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:59,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:59,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547022775] [2020-10-13 10:22:59,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:59,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:59,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:59,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:59,071 INFO L87 Difference]: Start difference. First operand 464 states and 500 transitions. Second operand 15 states. [2020-10-13 10:23:01,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:01,098 INFO L93 Difference]: Finished difference Result 504 states and 542 transitions. [2020-10-13 10:23:01,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:23:01,099 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 68 [2020-10-13 10:23:01,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:01,102 INFO L225 Difference]: With dead ends: 504 [2020-10-13 10:23:01,103 INFO L226 Difference]: Without dead ends: 492 [2020-10-13 10:23:01,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:23:01,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-10-13 10:23:01,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 461. [2020-10-13 10:23:01,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-10-13 10:23:01,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 497 transitions. [2020-10-13 10:23:01,130 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 497 transitions. Word has length 68 [2020-10-13 10:23:01,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:01,130 INFO L479 AbstractCegarLoop]: Abstraction has 461 states and 497 transitions. [2020-10-13 10:23:01,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:23:01,130 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 497 transitions. [2020-10-13 10:23:01,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 10:23:01,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:01,132 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:01,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 10:23:01,132 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:01,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:01,133 INFO L82 PathProgramCache]: Analyzing trace with hash -219153624, now seen corresponding path program 2 times [2020-10-13 10:23:01,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:01,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508042685] [2020-10-13 10:23:01,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:01,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:02,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:02,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 10:23:02,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:02,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1500 [2020-10-13 10:23:02,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:02,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:23:02,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:02,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 10:23:02,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:03,184 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 50 [2020-10-13 10:23:03,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:03,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:03,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:03,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:03,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:03,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:03,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:03,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:03,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:03,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:03,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:03,572 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:03,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508042685] [2020-10-13 10:23:03,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:03,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:23:03,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144205928] [2020-10-13 10:23:03,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:23:03,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:03,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:23:03,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:23:03,574 INFO L87 Difference]: Start difference. First operand 461 states and 497 transitions. Second operand 16 states. [2020-10-13 10:23:06,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:06,400 INFO L93 Difference]: Finished difference Result 502 states and 537 transitions. [2020-10-13 10:23:06,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 10:23:06,401 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2020-10-13 10:23:06,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:06,404 INFO L225 Difference]: With dead ends: 502 [2020-10-13 10:23:06,404 INFO L226 Difference]: Without dead ends: 500 [2020-10-13 10:23:06,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:23:06,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-10-13 10:23:06,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 464. [2020-10-13 10:23:06,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-13 10:23:06,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 500 transitions. [2020-10-13 10:23:06,432 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 500 transitions. Word has length 68 [2020-10-13 10:23:06,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:06,432 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 500 transitions. [2020-10-13 10:23:06,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:23:06,433 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 500 transitions. [2020-10-13 10:23:06,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 10:23:06,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:06,434 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:06,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 10:23:06,434 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:06,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:06,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1925291838, now seen corresponding path program 6 times [2020-10-13 10:23:06,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:06,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180478780] [2020-10-13 10:23:06,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:06,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:07,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:08,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:08,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 10:23:08,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:23:08,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1667 [2020-10-13 10:23:08,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:08,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:23:08,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:08,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 10:23:08,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:08,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:08,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:08,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:08,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:08,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:08,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:08,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:08,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:08,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:08,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:08,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:08,961 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 5 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:08,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180478780] [2020-10-13 10:23:08,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:08,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:23:08,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568120576] [2020-10-13 10:23:08,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:23:08,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:08,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:23:08,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:23:08,962 INFO L87 Difference]: Start difference. First operand 464 states and 500 transitions. Second operand 15 states. [2020-10-13 10:23:11,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:11,120 INFO L93 Difference]: Finished difference Result 480 states and 516 transitions. [2020-10-13 10:23:11,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:23:11,121 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 68 [2020-10-13 10:23:11,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:11,124 INFO L225 Difference]: With dead ends: 480 [2020-10-13 10:23:11,124 INFO L226 Difference]: Without dead ends: 425 [2020-10-13 10:23:11,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:23:11,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-10-13 10:23:11,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 423. [2020-10-13 10:23:11,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-10-13 10:23:11,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 455 transitions. [2020-10-13 10:23:11,150 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 455 transitions. Word has length 68 [2020-10-13 10:23:11,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:11,151 INFO L479 AbstractCegarLoop]: Abstraction has 423 states and 455 transitions. [2020-10-13 10:23:11,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:23:11,151 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 455 transitions. [2020-10-13 10:23:11,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 10:23:11,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:11,152 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:11,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 10:23:11,153 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:11,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:11,153 INFO L82 PathProgramCache]: Analyzing trace with hash -112140236, now seen corresponding path program 7 times [2020-10-13 10:23:11,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:11,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774084108] [2020-10-13 10:23:11,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:11,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:13,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:13,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 10:23:13,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:13,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2181 [2020-10-13 10:23:13,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:23:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 10:23:13,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:13,832 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-10-13 10:23:13,961 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-10-13 10:23:14,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:14,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:14,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:14,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:14,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:14,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:23:14,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:14,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:14,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:14,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:14,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:14,222 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:14,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774084108] [2020-10-13 10:23:14,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:14,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:23:14,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044251265] [2020-10-13 10:23:14,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:23:14,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:14,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:23:14,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:14,224 INFO L87 Difference]: Start difference. First operand 423 states and 455 transitions. Second operand 17 states. [2020-10-13 10:23:18,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:18,435 INFO L93 Difference]: Finished difference Result 796 states and 861 transitions. [2020-10-13 10:23:18,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:23:18,436 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-13 10:23:18,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:18,440 INFO L225 Difference]: With dead ends: 796 [2020-10-13 10:23:18,440 INFO L226 Difference]: Without dead ends: 794 [2020-10-13 10:23:18,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:23:18,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2020-10-13 10:23:18,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 639. [2020-10-13 10:23:18,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-13 10:23:18,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 689 transitions. [2020-10-13 10:23:18,475 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 689 transitions. Word has length 70 [2020-10-13 10:23:18,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:18,475 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 689 transitions. [2020-10-13 10:23:18,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:23:18,475 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 689 transitions. [2020-10-13 10:23:18,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 10:23:18,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:18,477 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:18,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 10:23:18,478 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:18,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:18,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1259667062, now seen corresponding path program 7 times [2020-10-13 10:23:18,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:18,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019682342] [2020-10-13 10:23:18,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:18,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:20,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:20,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 10:23:20,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:20,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1668 [2020-10-13 10:23:20,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:23:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 10:23:20,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:20,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:20,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:20,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:20,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:20,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:20,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:20,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:20,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:20,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:20,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:20,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:20,958 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 2 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:20,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019682342] [2020-10-13 10:23:20,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:20,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:23:20,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529370780] [2020-10-13 10:23:20,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:23:20,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:20,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:23:20,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:20,960 INFO L87 Difference]: Start difference. First operand 639 states and 689 transitions. Second operand 17 states. [2020-10-13 10:23:24,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:24,211 INFO L93 Difference]: Finished difference Result 713 states and 767 transitions. [2020-10-13 10:23:24,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 10:23:24,212 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-13 10:23:24,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:24,216 INFO L225 Difference]: With dead ends: 713 [2020-10-13 10:23:24,216 INFO L226 Difference]: Without dead ends: 701 [2020-10-13 10:23:24,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=88, Invalid=782, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:23:24,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2020-10-13 10:23:24,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 675. [2020-10-13 10:23:24,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2020-10-13 10:23:24,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 729 transitions. [2020-10-13 10:23:24,256 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 729 transitions. Word has length 70 [2020-10-13 10:23:24,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:24,257 INFO L479 AbstractCegarLoop]: Abstraction has 675 states and 729 transitions. [2020-10-13 10:23:24,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:23:24,257 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 729 transitions. [2020-10-13 10:23:24,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 10:23:24,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:24,259 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:24,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 10:23:24,259 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:24,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:24,259 INFO L82 PathProgramCache]: Analyzing trace with hash 442233098, now seen corresponding path program 5 times [2020-10-13 10:23:24,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:24,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068089652] [2020-10-13 10:23:24,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:24,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:26,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:26,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 10:23:26,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:26,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2007 [2020-10-13 10:23:26,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:26,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:23:26,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:26,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 10:23:26,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:27,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:27,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:27,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:27,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:27,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:27,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:27,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:27,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:27,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:27,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:27,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:27,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068089652] [2020-10-13 10:23:27,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:27,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:23:27,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453418011] [2020-10-13 10:23:27,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:23:27,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:27,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:23:27,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:23:27,141 INFO L87 Difference]: Start difference. First operand 675 states and 729 transitions. Second operand 16 states. [2020-10-13 10:23:29,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:29,407 INFO L93 Difference]: Finished difference Result 729 states and 789 transitions. [2020-10-13 10:23:29,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:23:29,408 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-10-13 10:23:29,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:29,412 INFO L225 Difference]: With dead ends: 729 [2020-10-13 10:23:29,412 INFO L226 Difference]: Without dead ends: 727 [2020-10-13 10:23:29,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:23:29,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-10-13 10:23:29,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 680. [2020-10-13 10:23:29,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-10-13 10:23:29,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 734 transitions. [2020-10-13 10:23:29,453 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 734 transitions. Word has length 71 [2020-10-13 10:23:29,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:29,453 INFO L479 AbstractCegarLoop]: Abstraction has 680 states and 734 transitions. [2020-10-13 10:23:29,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:23:29,453 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 734 transitions. [2020-10-13 10:23:29,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 10:23:29,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:29,454 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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 10:23:29,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 10:23:29,455 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:29,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:29,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1096106932, now seen corresponding path program 6 times [2020-10-13 10:23:29,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:29,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832388266] [2020-10-13 10:23:29,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:29,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:31,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:31,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 10:23:31,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:31,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1610 [2020-10-13 10:23:31,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:31,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:23:31,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:31,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 10:23:31,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:32,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:32,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:32,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:32,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:32,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:32,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:32,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:32,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:32,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:32,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:32,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:32,426 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:32,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832388266] [2020-10-13 10:23:32,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:32,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:23:32,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957315966] [2020-10-13 10:23:32,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:23:32,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:32,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:23:32,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:23:32,427 INFO L87 Difference]: Start difference. First operand 680 states and 734 transitions. Second operand 15 states. [2020-10-13 10:23:33,710 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-10-13 10:23:34,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:34,486 INFO L93 Difference]: Finished difference Result 759 states and 821 transitions. [2020-10-13 10:23:34,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:23:34,488 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 71 [2020-10-13 10:23:34,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:34,492 INFO L225 Difference]: With dead ends: 759 [2020-10-13 10:23:34,493 INFO L226 Difference]: Without dead ends: 694 [2020-10-13 10:23:34,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:23:34,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-10-13 10:23:34,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 646. [2020-10-13 10:23:34,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-10-13 10:23:34,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 689 transitions. [2020-10-13 10:23:34,526 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 689 transitions. Word has length 71 [2020-10-13 10:23:34,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:34,526 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 689 transitions. [2020-10-13 10:23:34,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:23:34,526 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 689 transitions. [2020-10-13 10:23:34,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 10:23:34,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:34,528 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:34,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 10:23:34,528 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:34,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:34,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1833916493, now seen corresponding path program 8 times [2020-10-13 10:23:34,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:34,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504312706] [2020-10-13 10:23:34,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:34,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:36,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:38,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:38,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 10:23:38,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:23:38,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4099 [2020-10-13 10:23:38,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:38,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:23:38,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:38,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 10:23:38,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:39,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:39,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:39,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:39,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:39,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:39,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:39,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:39,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:39,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:39,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:39,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:39,447 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 13 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:39,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504312706] [2020-10-13 10:23:39,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:39,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:23:39,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015968496] [2020-10-13 10:23:39,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:23:39,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:39,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:23:39,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:39,449 INFO L87 Difference]: Start difference. First operand 646 states and 689 transitions. Second operand 17 states. [2020-10-13 10:23:42,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:42,276 INFO L93 Difference]: Finished difference Result 696 states and 741 transitions. [2020-10-13 10:23:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:23:42,276 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2020-10-13 10:23:42,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:42,279 INFO L225 Difference]: With dead ends: 696 [2020-10-13 10:23:42,279 INFO L226 Difference]: Without dead ends: 684 [2020-10-13 10:23:42,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:23:42,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2020-10-13 10:23:42,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 646. [2020-10-13 10:23:42,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-10-13 10:23:42,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 689 transitions. [2020-10-13 10:23:42,307 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 689 transitions. Word has length 73 [2020-10-13 10:23:42,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:42,307 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 689 transitions. [2020-10-13 10:23:42,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:23:42,308 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 689 transitions. [2020-10-13 10:23:42,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 10:23:42,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:42,309 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:42,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 10:23:42,309 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:42,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:42,310 INFO L82 PathProgramCache]: Analyzing trace with hash 718830329, now seen corresponding path program 3 times [2020-10-13 10:23:42,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:42,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522669305] [2020-10-13 10:23:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:42,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:44,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:44,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 10:23:44,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:44,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2216 [2020-10-13 10:23:44,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:44,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:23:44,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:44,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 10:23:44,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:45,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:45,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:45,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:45,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:45,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:45,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:23:45,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:45,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:45,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:45,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:45,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:45,439 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:45,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522669305] [2020-10-13 10:23:45,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:45,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:23:45,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539212943] [2020-10-13 10:23:45,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:23:45,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:45,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:23:45,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:23:45,440 INFO L87 Difference]: Start difference. First operand 646 states and 689 transitions. Second operand 18 states. [2020-10-13 10:23:49,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:49,488 INFO L93 Difference]: Finished difference Result 713 states and 757 transitions. [2020-10-13 10:23:49,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 10:23:49,489 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 73 [2020-10-13 10:23:49,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:49,492 INFO L225 Difference]: With dead ends: 713 [2020-10-13 10:23:49,493 INFO L226 Difference]: Without dead ends: 711 [2020-10-13 10:23:49,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=97, Invalid=959, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:23:49,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-10-13 10:23:49,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 643. [2020-10-13 10:23:49,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-10-13 10:23:49,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 686 transitions. [2020-10-13 10:23:49,521 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 686 transitions. Word has length 73 [2020-10-13 10:23:49,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:49,521 INFO L479 AbstractCegarLoop]: Abstraction has 643 states and 686 transitions. [2020-10-13 10:23:49,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:23:49,522 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 686 transitions. [2020-10-13 10:23:49,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 10:23:49,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:49,523 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 10:23:49,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 10:23:49,523 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:49,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:49,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1563657525, now seen corresponding path program 8 times [2020-10-13 10:23:49,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:49,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973746457] [2020-10-13 10:23:49,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:49,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:50,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:52,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:52,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 10:23:52,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:23:52,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2591 [2020-10-13 10:23:52,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:52,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:23:52,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:52,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 10:23:52,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:53,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:53,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:53,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:53,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:53,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:53,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:53,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:53,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:53,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:53,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:53,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:53,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973746457] [2020-10-13 10:23:53,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:53,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:23:53,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959303040] [2020-10-13 10:23:53,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:23:53,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:53,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:23:53,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:53,129 INFO L87 Difference]: Start difference. First operand 643 states and 686 transitions. Second operand 17 states. [2020-10-13 10:23:56,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:56,435 INFO L93 Difference]: Finished difference Result 685 states and 728 transitions. [2020-10-13 10:23:56,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:23:56,436 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2020-10-13 10:23:56,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:56,438 INFO L225 Difference]: With dead ends: 685 [2020-10-13 10:23:56,439 INFO L226 Difference]: Without dead ends: 548 [2020-10-13 10:23:56,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:23:56,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-10-13 10:23:56,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 536. [2020-10-13 10:23:56,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-13 10:23:56,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 570 transitions. [2020-10-13 10:23:56,462 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 570 transitions. Word has length 73 [2020-10-13 10:23:56,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:56,463 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 570 transitions. [2020-10-13 10:23:56,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:23:56,463 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 570 transitions. [2020-10-13 10:23:56,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 10:23:56,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:56,464 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:56,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 10:23:56,464 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:56,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:56,465 INFO L82 PathProgramCache]: Analyzing trace with hash -2014716457, now seen corresponding path program 4 times [2020-10-13 10:23:56,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:56,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686264617] [2020-10-13 10:23:56,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:56,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:59,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:59,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 10:23:59,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:59,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3091 [2020-10-13 10:23:59,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:23:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 10:23:59,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:00,103 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-10-13 10:24:00,235 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2020-10-13 10:24:00,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:00,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:00,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:00,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:00,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:00,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:00,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:00,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:00,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:00,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:00,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:00,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686264617] [2020-10-13 10:24:00,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:00,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:24:00,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575999071] [2020-10-13 10:24:00,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:24:00,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:00,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:24:00,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:24:00,840 INFO L87 Difference]: Start difference. First operand 536 states and 570 transitions. Second operand 18 states. [2020-10-13 10:24:04,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:04,311 INFO L93 Difference]: Finished difference Result 564 states and 599 transitions. [2020-10-13 10:24:04,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:24:04,312 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 76 [2020-10-13 10:24:04,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:04,315 INFO L225 Difference]: With dead ends: 564 [2020-10-13 10:24:04,315 INFO L226 Difference]: Without dead ends: 562 [2020-10-13 10:24:04,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:24:04,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-13 10:24:04,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 518. [2020-10-13 10:24:04,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-13 10:24:04,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 552 transitions. [2020-10-13 10:24:04,343 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 552 transitions. Word has length 76 [2020-10-13 10:24:04,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:04,343 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 552 transitions. [2020-10-13 10:24:04,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:24:04,343 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 552 transitions. [2020-10-13 10:24:04,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 10:24:04,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:04,345 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:04,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 10:24:04,345 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:04,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:04,345 INFO L82 PathProgramCache]: Analyzing trace with hash 2134419753, now seen corresponding path program 9 times [2020-10-13 10:24:04,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:04,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637362914] [2020-10-13 10:24:04,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:04,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:06,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:06,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 10:24:06,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:06,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2142 [2020-10-13 10:24:06,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:06,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:24:06,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:06,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 10:24:06,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:07,330 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-13 10:24:07,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:07,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:07,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:07,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:07,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:07,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:07,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:07,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:07,594 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:07,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637362914] [2020-10-13 10:24:07,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:07,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:24:07,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807567304] [2020-10-13 10:24:07,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:24:07,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:07,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:24:07,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:24:07,595 INFO L87 Difference]: Start difference. First operand 518 states and 552 transitions. Second operand 17 states. [2020-10-13 10:24:10,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:10,718 INFO L93 Difference]: Finished difference Result 570 states and 606 transitions. [2020-10-13 10:24:10,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:24:10,719 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 76 [2020-10-13 10:24:10,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:10,722 INFO L225 Difference]: With dead ends: 570 [2020-10-13 10:24:10,722 INFO L226 Difference]: Without dead ends: 568 [2020-10-13 10:24:10,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:24:10,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-10-13 10:24:10,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 534. [2020-10-13 10:24:10,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 534 states. [2020-10-13 10:24:10,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 569 transitions. [2020-10-13 10:24:10,744 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 569 transitions. Word has length 76 [2020-10-13 10:24:10,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:10,745 INFO L479 AbstractCegarLoop]: Abstraction has 534 states and 569 transitions. [2020-10-13 10:24:10,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:24:10,745 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 569 transitions. [2020-10-13 10:24:10,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 10:24:10,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:10,746 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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 10:24:10,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 10:24:10,746 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:10,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:10,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1019333589, now seen corresponding path program 3 times [2020-10-13 10:24:10,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:10,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512177126] [2020-10-13 10:24:10,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:10,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:13,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:13,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 10:24:13,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:13,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2592 [2020-10-13 10:24:13,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:13,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:24:13,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:13,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 10:24:13,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:13,921 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-10-13 10:24:14,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:14,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:14,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:14,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:14,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:14,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:14,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:14,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:14,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:14,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:14,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:14,614 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:14,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512177126] [2020-10-13 10:24:14,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:14,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:24:14,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634068466] [2020-10-13 10:24:14,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:24:14,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:14,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:24:14,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:24:14,615 INFO L87 Difference]: Start difference. First operand 534 states and 569 transitions. Second operand 17 states. [2020-10-13 10:24:17,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:17,095 INFO L93 Difference]: Finished difference Result 574 states and 611 transitions. [2020-10-13 10:24:17,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:24:17,096 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 76 [2020-10-13 10:24:17,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:17,098 INFO L225 Difference]: With dead ends: 574 [2020-10-13 10:24:17,098 INFO L226 Difference]: Without dead ends: 512 [2020-10-13 10:24:17,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:24:17,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-10-13 10:24:17,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 473. [2020-10-13 10:24:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-10-13 10:24:17,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 503 transitions. [2020-10-13 10:24:17,121 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 503 transitions. Word has length 76 [2020-10-13 10:24:17,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:17,122 INFO L479 AbstractCegarLoop]: Abstraction has 473 states and 503 transitions. [2020-10-13 10:24:17,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:24:17,122 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 503 transitions. [2020-10-13 10:24:17,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 10:24:17,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:17,123 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:17,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 10:24:17,123 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:17,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:17,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1661459510, now seen corresponding path program 9 times [2020-10-13 10:24:17,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:17,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348466505] [2020-10-13 10:24:17,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:17,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:18,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:21,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:21,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 10:24:21,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:24:21,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3996 [2020-10-13 10:24:21,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:21,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:24:21,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:21,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 10:24:21,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:21,706 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-10-13 10:24:21,920 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-10-13 10:24:22,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:22,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:22,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:22,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:22,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:22,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:22,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:22,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:22,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:22,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:22,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:22,626 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 7 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:22,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348466505] [2020-10-13 10:24:22,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:22,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:24:22,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334649301] [2020-10-13 10:24:22,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:24:22,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:22,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:24:22,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:24:22,627 INFO L87 Difference]: Start difference. First operand 473 states and 503 transitions. Second operand 18 states. [2020-10-13 10:24:24,633 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-13 10:24:27,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:27,083 INFO L93 Difference]: Finished difference Result 523 states and 560 transitions. [2020-10-13 10:24:27,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:24:27,084 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-10-13 10:24:27,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:27,087 INFO L225 Difference]: With dead ends: 523 [2020-10-13 10:24:27,087 INFO L226 Difference]: Without dead ends: 463 [2020-10-13 10:24:27,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2020-10-13 10:24:27,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-10-13 10:24:27,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 434. [2020-10-13 10:24:27,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-10-13 10:24:27,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 462 transitions. [2020-10-13 10:24:27,107 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 462 transitions. Word has length 78 [2020-10-13 10:24:27,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:27,107 INFO L479 AbstractCegarLoop]: Abstraction has 434 states and 462 transitions. [2020-10-13 10:24:27,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:24:27,107 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 462 transitions. [2020-10-13 10:24:27,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 10:24:27,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:27,109 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:27,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 10:24:27,109 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:27,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:27,109 INFO L82 PathProgramCache]: Analyzing trace with hash 627175224, now seen corresponding path program 10 times [2020-10-13 10:24:27,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:27,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157715633] [2020-10-13 10:24:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:27,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:29,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:30,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:32,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:32,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 10:24:32,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:24:32,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-13 10:24:32,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:32,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:24:32,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:32,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 10:24:32,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:32,834 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-10-13 10:24:33,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:33,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:33,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:33,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:33,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:33,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:33,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:33,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 12 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:33,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157715633] [2020-10-13 10:24:33,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:33,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:24:33,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5227272] [2020-10-13 10:24:33,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:24:33,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:33,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:24:33,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:24:33,147 INFO L87 Difference]: Start difference. First operand 434 states and 462 transitions. Second operand 17 states. [2020-10-13 10:24:35,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:35,787 INFO L93 Difference]: Finished difference Result 577 states and 614 transitions. [2020-10-13 10:24:35,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:24:35,788 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 79 [2020-10-13 10:24:35,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:35,791 INFO L225 Difference]: With dead ends: 577 [2020-10-13 10:24:35,791 INFO L226 Difference]: Without dead ends: 565 [2020-10-13 10:24:35,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:24:35,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-13 10:24:35,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 552. [2020-10-13 10:24:35,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-10-13 10:24:35,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 586 transitions. [2020-10-13 10:24:35,816 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 586 transitions. Word has length 79 [2020-10-13 10:24:35,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:35,816 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 586 transitions. [2020-10-13 10:24:35,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:24:35,816 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 586 transitions. [2020-10-13 10:24:35,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 10:24:35,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:35,817 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:35,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 10:24:35,817 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:35,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:35,817 INFO L82 PathProgramCache]: Analyzing trace with hash -487910940, now seen corresponding path program 4 times [2020-10-13 10:24:35,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:35,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969552239] [2020-10-13 10:24:35,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:36,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:38,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:38,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 10:24:38,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:38,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2478 [2020-10-13 10:24:38,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:24:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 10:24:38,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:39,197 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2020-10-13 10:24:39,355 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2020-10-13 10:24:39,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:39,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:39,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:39,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:39,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:39,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:39,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:39,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:39,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:39,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:39,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:39,767 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:39,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969552239] [2020-10-13 10:24:39,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:39,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:24:39,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000851996] [2020-10-13 10:24:39,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:24:39,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:39,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:24:39,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:24:39,769 INFO L87 Difference]: Start difference. First operand 552 states and 586 transitions. Second operand 18 states. [2020-10-13 10:24:43,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:43,580 INFO L93 Difference]: Finished difference Result 696 states and 743 transitions. [2020-10-13 10:24:43,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:24:43,581 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 79 [2020-10-13 10:24:43,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:43,584 INFO L225 Difference]: With dead ends: 696 [2020-10-13 10:24:43,584 INFO L226 Difference]: Without dead ends: 694 [2020-10-13 10:24:43,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:24:43,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-10-13 10:24:43,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 619. [2020-10-13 10:24:43,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2020-10-13 10:24:43,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 659 transitions. [2020-10-13 10:24:43,622 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 659 transitions. Word has length 79 [2020-10-13 10:24:43,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:43,622 INFO L479 AbstractCegarLoop]: Abstraction has 619 states and 659 transitions. [2020-10-13 10:24:43,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:24:43,623 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 659 transitions. [2020-10-13 10:24:43,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 10:24:43,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:43,623 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:43,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 10:24:43,624 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:43,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:43,624 INFO L82 PathProgramCache]: Analyzing trace with hash -472392222, now seen corresponding path program 5 times [2020-10-13 10:24:43,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:43,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143439403] [2020-10-13 10:24:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:43,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:45,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:45,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 10:24:45,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:45,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2048 [2020-10-13 10:24:45,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:45,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:24:45,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:45,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 10:24:45,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:46,390 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2020-10-13 10:24:46,552 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2020-10-13 10:24:46,705 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 65 [2020-10-13 10:24:46,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:46,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:46,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:46,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:46,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:46,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:46,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:46,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:46,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:46,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:46,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:47,046 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 4 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:47,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143439403] [2020-10-13 10:24:47,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:47,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:24:47,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475276723] [2020-10-13 10:24:47,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:24:47,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:47,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:24:47,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:24:47,047 INFO L87 Difference]: Start difference. First operand 619 states and 659 transitions. Second operand 17 states. [2020-10-13 10:24:50,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:50,059 INFO L93 Difference]: Finished difference Result 648 states and 691 transitions. [2020-10-13 10:24:50,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:24:50,061 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 79 [2020-10-13 10:24:50,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:50,064 INFO L225 Difference]: With dead ends: 648 [2020-10-13 10:24:50,065 INFO L226 Difference]: Without dead ends: 580 [2020-10-13 10:24:50,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:24:50,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-10-13 10:24:50,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 525. [2020-10-13 10:24:50,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2020-10-13 10:24:50,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 561 transitions. [2020-10-13 10:24:50,090 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 561 transitions. Word has length 79 [2020-10-13 10:24:50,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:50,090 INFO L479 AbstractCegarLoop]: Abstraction has 525 states and 561 transitions. [2020-10-13 10:24:50,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:24:50,090 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 561 transitions. [2020-10-13 10:24:50,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 10:24:50,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:50,091 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:50,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 10:24:50,091 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:50,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:50,091 INFO L82 PathProgramCache]: Analyzing trace with hash 2017975212, now seen corresponding path program 10 times [2020-10-13 10:24:50,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:50,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578027784] [2020-10-13 10:24:50,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:50,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:53,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:53,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 10:24:53,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:53,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3159 [2020-10-13 10:24:53,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:53,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:24:53,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:53,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 10:24:53,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:53,997 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-13 10:24:54,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:54,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:54,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:54,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:54,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:54,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:54,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:54,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:54,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578027784] [2020-10-13 10:24:54,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:54,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:24:54,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537115882] [2020-10-13 10:24:54,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:24:54,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:54,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:24:54,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:24:54,467 INFO L87 Difference]: Start difference. First operand 525 states and 561 transitions. Second operand 19 states. [2020-10-13 10:24:58,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:58,919 INFO L93 Difference]: Finished difference Result 716 states and 767 transitions. [2020-10-13 10:24:58,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:24:58,920 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 81 [2020-10-13 10:24:58,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:58,923 INFO L225 Difference]: With dead ends: 716 [2020-10-13 10:24:58,924 INFO L226 Difference]: Without dead ends: 714 [2020-10-13 10:24:58,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:24:58,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-10-13 10:24:58,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 554. [2020-10-13 10:24:58,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-10-13 10:24:58,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 591 transitions. [2020-10-13 10:24:58,961 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 591 transitions. Word has length 81 [2020-10-13 10:24:58,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:58,961 INFO L479 AbstractCegarLoop]: Abstraction has 554 states and 591 transitions. [2020-10-13 10:24:58,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:24:58,961 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 591 transitions. [2020-10-13 10:24:58,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 10:24:58,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:58,962 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:58,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 10:24:58,962 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:58,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:58,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1961429461, now seen corresponding path program 11 times [2020-10-13 10:24:58,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:58,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834684057] [2020-10-13 10:24:58,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:59,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:01,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:04,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:04,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 10:25:04,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:25:04,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 10:25:04,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:04,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:25:04,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:04,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 10:25:04,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:04,670 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-10-13 10:25:04,818 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-10-13 10:25:05,032 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2020-10-13 10:25:05,258 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-13 10:25:05,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:05,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:05,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:05,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:05,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:05,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:05,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:05,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:05,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:05,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:05,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:05,790 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 2 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:05,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834684057] [2020-10-13 10:25:05,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:05,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 10:25:05,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094923460] [2020-10-13 10:25:05,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 10:25:05,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:05,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 10:25:05,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:25:05,792 INFO L87 Difference]: Start difference. First operand 554 states and 591 transitions. Second operand 20 states.